Papers by Jun Chen

189 papers
Set Generation Networks for End-to-End Knowledge Base Population (2021.emnlp-main)

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Challenge: Existing knowledge base population systems require a machine translation task to generate multiple facts, but the fact order is not considered.
Approach: They propose a knowledge base population task that aims to discover facts about entities from texts and expand a KB with these facts.
Outcome: The proposed networks achieve state-of-the-art (SoTA) performance on two benchmark datasets.
Agent-RewardBench: Towards a Unified Benchmark for Reward Modeling across Perception, Planning, and Safety in Real-World Multimodal Agents (2025.acl-long)

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Challenge: Multimodal Large Language Models (MLLMs) are developing but lack external feedback . there is no clear on how to select reward models for agents .
Approach: They propose a benchmark to evaluate agent reward modeling ability in MLLMs . they use multiple dimensions and real-world agent scenarios evaluation .
Outcome: The proposed benchmark evaluates agent performance in multimodal large language models . it covers perception, planning, and safety with 7 scenarios and is highly difficult and high-quality .
A Deep Learning-Based System for PharmaCoNER (D19-57)

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Challenge: Efficient access to mentions of clinical entities is very important for using clinical text.
Approach: They developed a pipeline system based on deep learning methods for this shared task . it achieves a micro-average F1-score of 0.9105 on track 1 and a mini-average LSTM score of 0.8391 on track 2 .
Outcome: The proposed system achieves a micro-average F1-score of 0.9105 on track 1 and a mini-average score of 0.8391 on track 2.
Test-time Backdoor Mitigation for Black-Box Large Language Models with Defensive Demonstrations (2025.findings-naacl)

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Challenge: Existing studies on backdoor defense have focused on training phase, overlooking critical aspect of testing time defense.
Approach: They propose to use demonstrations as a defense mechanism against backdoor attacks in black-box LLMs.
Outcome: The proposed method outperforms existing defense baselines across most evaluation scenarios.
PAI-Diffusion: Constructing and Serving a Family of Open Chinese Diffusion Models for Text-to-image Synthesis on the Cloud (2024.acl-demos)

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Challenge: Existing diffusion models fail to address the challenges of generating high-quality images from textual descriptions due to its large vocabulary size and complex character relationships.
Approach: They propose a framework that integrates Chinese diffusion models with Alibaba Cloud's Platform for AI and enables the generation of contextually relevant images.
Outcome: The proposed framework integrates with Alibaba Cloud’s Platform for AI, providing accessible and scalable solutions.
Event Ontology Completion with Hierarchical Structure Evolution Networks (2023.emnlp-main)

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Challenge: Existing methods for event detection require predefined schemas, but manual defining is expensive and labor-intensive.
Approach: They propose a task to achieve event clustering, hierarchy expansion and type naming . they propose 'neighbor Contrastive Clustering' module and a Hierarchy-Aware Linking module .
Outcome: The proposed method outperforms baseline methods on three datasets.
Context-Interactive Pre-Training for Document Machine Translation (2021.naacl-main)

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Challenge: Document machine translation typically suffers from a lack of document-level bilingual data.
Approach: They propose a document machine translation model that incorporates contextual information into the training signals by capturing cross-sentence dependency within the target document and cross sentence translation to make better use of contextual information.
Outcome: The proposed model outperforms baselines on three benchmark datasets and significantly outperformed previous approaches.
Continual Few-shot Event Detection via Hierarchical Augmentation Networks (2024.lrec-main)

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Challenge: Existing methods for continual few-shot event detection use labeled data, but in real-world applications, new event types emerge continually.
Approach: They propose a memory-based framework for continual few-shot event detection . they incorporate prototypical augmentation into the memory set to memorize previous event types .
Outcome: The proposed method outperforms existing methods in multiple continual few-shot event detection tasks.
Efficient Inference for Large Vision-Language Models: Bottlenecks, Techniques, and Prospects (2026.findings-acl)

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Challenge: Large Vision-Language Models are hindered by a systemic efficiency barrier known as visual token dominance.
Approach: They propose a systematic taxonomy of efficiency techniques structured around the inference lifecycle . they examine visual encoding, prefilling, and decoding to understand bottlenecks .
Outcome: The proposed techniques reveal how upstream decisions dictate downstream bottlenecks . the proposed techniques include hybrid compression and modality-aware decoding .
CroAno : A Crowd Annotation Platform for Improving Label Consistency of Chinese NER Dataset (2021.emnlp-demo)

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Challenge: Existing crowd annotation tools for named entity recognition (NER) focus on efficiency and don't consider consistency of datasets.
Approach: They propose a crowd annotation platform for Chinese named entity recognition (NER) CroAno provides a systematic solution for improving label consistency of Chinese NER datasets.
Outcome: The proposed platform improves label consistency of Chinese NER datasets.
DAFNet: Dynamic Auxiliary Fusion for Sequential Model Editing in Large Language Models (2024.findings-acl)

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Challenge: Large language models (LLMs) have shown impressive results, but still suffer from hallucination, i.e., the generation of false information.
Approach: They propose a task of sequential model editing that aims to rectify mistakes continuously.
Outcome: The proposed method significantly outperforms baselines in single-turn and sequential editing.
LEGO: A Multi-agent Collaborative Framework with Role-playing and Iterative Feedback for Causality Explanation Generation (2023.findings-emnlp)

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Challenge: Causality explanation generation is a generative task that aims to explain why a given cause-effect pair is true using natural language.
Approach: They propose a multi-agent framework with role-playing and iterative feedback for causality explanation generation.
Outcome: The proposed framework is superior to existing frameworks on WIKIWHY and e-CARE datasets.
Look Light, Think Heavy: What Multimodal Chain-of-Thought Reasoning Can and Cannot Do (2026.acl-long)

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Challenge: Existing open-source models often yield only marginal overall improvements, possibly due to an overemphasis on mathematical reasoning at the expense of broader capabilities.
Approach: They evaluate 12 multimodal tasks using 14 non-reasoning models and 8 reasoning models.
Outcome: The proposed method is effective in multimodal reasoning tasks, the authors show . they show that it lacks the ability to maintain deep visual introspection throughout the reasoning process.
Generate-on-Graph: Treat LLM as both Agent and KG for Incomplete Knowledge Graph Question Answering (2024.emnlp-main)

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Challenge: Existing methods to integrate LLMs with Knowledge Graphs (KGs) however, these methods are often incomplete to cover all the knowledge required to answer questions.
Approach: They propose to integrate LLMs with Knowledge Graphs (KGs) to address insufficient knowledge and hallucination issues in Large Language Models.
Outcome: The proposed method outperforms existing methods on two datasets.
Named Entity Recognition via Noise Aware Training Mechanism with Data Filter (2021.findings-acl)

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Challenge: Existing methods for named entity recognition (NER) do not distinguish noisy from hard samples.
Approach: They propose a noise-aware-with-filter method to help model identify noisy samples . they propose 'incomplete trust' loss function which boosts L CRF with a robust term .
Outcome: The proposed method outperforms the existing methods on six real-world Chinese and English NER datasets.
WilKE: Wise-Layer Knowledge Editor for Lifelong Knowledge Editing (2024.findings-acl)

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Challenge: Existing knowledge editing methods focus on single editing, failing to meet the requirements for lifelong editing.
Approach: They propose an approach that selects editing layer based on the pattern matching degree of editing knowledge across different layers in language models.
Outcome: The proposed method improves on GPT2-XL and GPT-J in lifelong editing compared to state-of-the-art methods .
Magnet: Multi-turn Tool-use Data Synthesis and Distillation via Graph Translation (2025.acl-long)

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Challenge: Large language models have been shown to be effective in multi-turn interactions . however, their performance may be limited in complex, multi-turned interactions involving users and multiple tools.
Approach: They propose a framework for synthesizing high-quality training trajectories to enhance the function calling capability of large language model agents in multi-turn conversations with humans.
Outcome: The proposed model outperforms the teacher model by 68.01 on BFCL-v3 and 73.30 on ToolQuery.
Tug-of-War between Knowledge: Exploring and Resolving Knowledge Conflicts in Retrieval-Augmented Language Models (2024.lrec-main)

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Challenge: Existing knowledge conflicts in RALMs can ensnare them in a tug-of-war between knowledge and evidence, limiting their practical applicability.
Approach: They propose a method called Conflict-Disentangle Contrastive Decoding (CD2) to better calibrate the model’s confidence.
Outcome: The proposed method can resolve knowledge conflicts in large language models with the help of conflict-disentangle contrast decoding (CD2) .
Zero-shot Text Classification via Reinforced Self-training (2020.acl-main)

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Challenge: Existing methods to learn from unlabeled data are difficult for zero-shot text classification tasks.
Approach: They propose a self-training based method to efficiently leverage unlabeled data.
Outcome: The proposed method significantly outperforms existing methods in zero-shot text classification tasks on benchmarks and a real-world e-commerce dataset.
Uncertain Local-to-Global Networks for Document-Level Event Factuality Identification (2021.emnlp-main)

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Challenge: Existing studies focus on identifying event factuality at sentence level, which leads to conflicts between different mentions of the same event.
Approach: They propose a document-level event factuality identification model that uses local uncertainty and global structure to model event factuality.
Outcome: The proposed method outperforms existing models on two widely used datasets.
Draft & Verify: Lossless Large Language Model Acceleration via Self-Speculative Decoding (2024.acl-long)

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Challenge: Existing methods for accelerating Large Language Models have been criticized for their inference costs and inefficient decoding.
Approach: They propose a self-speculative decoding approach for accelerating Large Language Models without an auxiliary model.
Outcome: The proposed method achieves a speedup of up to 1.99 with no additional neural network training and no extra memory footprint.
AlphaFin: Benchmarking Financial Analysis with Retrieval-Augmented Stock-Chain Framework (2024.lrec-main)

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Challenge: Currently, ML&DL methods fail to provide reasons for stock trend predictions, lacking interpretability and reasoning processes. large language models (LLMs) suffer from hallucinations and are unable to keep up with the latest information.
Approach: They develop a method to train large language models to handle financial analysis tasks . they use AlphaFin datasets to compare performance with traditional methods .
Outcome: The proposed method improves stock trend prediction and financial question answering tasks.
Tailoring Vaccine Messaging with Common-Ground Opinions (2024.findings-naacl)

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Challenge: Vaccine interventions aim to answer concerns expressed about vaccination.
Approach: They propose a dataset to evaluate how well responses are tailored to a common-ground opinion . they find that GPT-4-Turbo performs significantly better than others .
Outcome: The proposed dataset outperforms fine tuned LLMs on the task of tailoring vaccine responses to common-ground opinions.
Multiple Knowledge-Enhanced Interactive Graph Network for Multimodal Conversational Emotion Recognition (2024.findings-emnlp)

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Challenge: Multimodal Emotion Recognition in Conversations models struggle due to lack of Common Sense Knowledge (CSK).
Approach: They propose a multimodal approach to integrate multiple knowledge into the edge representations by integrating textual and visual CSK.
Outcome: The proposed model outperforms state-of-the-art methods on two popular datasets.
Spiral of Silence in Large Language Model Agents (2025.findings-emnlp)

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Challenge: Existing theories of Spiral of Silence do not apply to large language models .
Approach: They propose an evaluation framework for examining SoS in large language models . they consider four controlled conditions that vary the availability of "History" and "Persona" signals .
Outcome: The proposed framework examines the SoS-like dynamics in large language models . it shows that history and persona together produce strong majority dominance .
CogKTR: A Knowledge-Enhanced Text Representation Toolkit for Natural Language Understanding (2022.emnlp-demos)

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Challenge: Existing knowledge-enhanced methods are limited to knowledge-intensive tasks.
Approach: They propose a knowledge-enhanced text representation toolkit for natural language understanding . it combines knowledge acquisition, knowledge representation, knowledge injection and knowledge application .
Outcome: The proposed toolkit supports knowledge acquisition, knowledge representation, knowledge injection, and knowledge application.
Knowledge-augmented Financial Market Analysis and Report Generation (2024.emnlp-industry)

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Challenge: Existing methods to generate financial market analysis text require extensive financial knowledge and skill of financial analysts.
Approach: They propose a task to generate financial market analysis reports using financial market data using a financial knowledge graph.
Outcome: The proposed framework outperforms large-scale language models and retrieval-augmented baselines in the financial market analysis generation task.
A Troublemaker with Contagious Jailbreak Makes Chaos in Honest Towns (2025.acl-long)

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Challenge: Existing research focuses on single-agent attacks and shared memory attacks, but real-world scenarios often involve independent memory.
Approach: They propose a large-scale, multi-agent, multitopology attack evaluation framework that exploits the memory of an agent to make it more vulnerable to jailbreak attacks.
Outcome: The proposed framework improves on the troublemaker makes chaos in Honest Town task with 23.51%, 18.95%, and 52.93% improvements in line, star topologies, and 100-agent settings.
Learning to Plan for Retrieval-Augmented Large Language Models from Knowledge Graphs (2024.findings-emnlp)

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Challenge: Recent studies have attempted to enhance the performance of large language models (LLMs) in complex question-answering (QA) tasks by combining step-wise planning with external retrieval.
Approach: They propose a framework for enhancing LLMs’ planning capabilities by using planning data derived from knowledge graphs (KGs).
Outcome: The proposed framework improves LLMs’ planning capabilities by using knowledge graphs (KGs) the proposed framework is compared with existing frameworks on multiple datasets and shows that it is effective for large language models.
SAGE: Steerable Agentic Data Generation for Deep Search with Execution Feedback (2026.findings-eacl)

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Challenge: High-quality, complex question-answer pairs are pivotal for training and evaluating capable deep search agents.
Approach: They propose a pipeline that generates high-quality, difficulty-controlled deep search question-answer pairs for a given corpus and a target difficulty level.
Outcome: The proposed pipeline generates high-quality, difficulty-controlled deep search question-answer pairs for a given corpus and a target difficulty level.
Factorized Learning Assisted with Large Language Model for Gloss-free Sign Language Translation (2024.lrec-main)

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Challenge: Previous Sign Language Translation methods have relied on gloss annotations to improve performance, but labeling high-quality glosses is labor-intensive and inefficient.
Approach: They propose to integrate Large Language Model (LLM) into SLT by factorizing learning into two stages to improve the learning curve.
Outcome: The proposed approach improves on three SLT datasets conducted under the gloss-free setting.
Cutting Off the Head Ends the Conflict: A Mechanism for Interpreting and Mitigating Knowledge Conflicts in Language Models (2024.findings-acl)

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Challenge: Existing methods to expand internal memory boundaries of language models by providing external context can often conflict, leading to knowledge conflicts.
Approach: They propose a method that prunes conflicting attention heads without updating model parameters.
Outcome: The proposed method can flexibly control eight LMs to use internal memory or external context without updating model parameters.
EventOA: An Event Ontology Alignment Benchmark Based on FrameNet and Wikidata (2023.findings-acl)

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Challenge: Existing studies on event ontologies focus on entity-based OA, and neglect event-based one . however, independent development of event ontoologies often results in heterogeneous representations that raise the need for establishing alignments between semantically related events.
Approach: They propose a multi-view event ontology alignment method that utilizes description information and neighbor information to obtain richer representations of the event ontoologies.
Outcome: The proposed method outperforms existing entity-based methods and can serve as a strong baseline for future research.
Title2Event: Benchmarking Open Event Extraction with a Large-scale Chinese Title Dataset (2022.emnlp-main)

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Challenge: Existing EE datasets define fixed event types and design specific schemas for each of them, failing to cover diverse events emerging from the online text.
Approach: They propose to use a sentence-level dataset to benchmark Open Event Extraction without restricting event types.
Outcome: The proposed dataset contains more than 42,000 news titles in 34 topics collected from Chinese web pages.
HiPrune: Hierarchical Attention for Efficient Token Pruning in Vision-Language Models (2026.findings-acl)

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Challenge: Existing methods for visual token pruning lack insight into the intrinsic property of the vision encoder . et al., 2017: 99.3% of task accuracy with only 1/3 of the tokens.
Approach: They propose a model-agnostic token pruning method that trains without training . they propose 'HiPrune' method which prunes visual tokens according to their attention .
Outcome: The proposed method achieves 99.3% of task accuracy with only 1/3 of the tokens . it reduces inference FLOPs by 58.7% and maintains 99.99% accuracy with 2/9 tokens.
Benchmarking and Improving Large Vision-Language Models for Fundamental Visual Graph Understanding and Reasoning (2025.acl-long)

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Challenge: Existing methods for enhancing understanding and reasoning abilities in graphbased tasks focus on specific graph types or tasks, posing challenges in designing versatile systems suitable for various tasks and graphs across diverse domains.
Approach: They propose a structure-aware fine-tuning framework to enhance LVLMs with structure learning abilities through three self-supervised learning tasks.
Outcome: Extensive evaluations on 14 LVLMs reveal that LVLs are weak in basic graph understanding and reasoning tasks, particularly those concerning relational or structurally complex information.
Focus on Your Question! Interpreting and Mitigating Toxic CoT Problems in Commonsense Reasoning (2024.acl-long)

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Challenge: Large language models exhibit high-level commonsense reasoning abilities, especially with enhancement methods like Chain-of-Thought (CoT).
Approach: They propose a chain-of-thought-like method to elicit models' potential abilities to generate rationales and answers that are based on attribution tracing and causal tracers to probe the internal working mechanism of the LLM.
Outcome: The proposed method eliminates Toxic CoT problems and improves the model’s overall commonsense reasoning performance by 5.5%.
Global Structure Knowledge-Guided Relation Extraction Method for Visually-Rich Document (2023.findings-emnlp)

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Challenge: Existing methods focus on manipulating entity features to find pairwise relations, yet neglect the more fundamental structural information that links disparate entity pairs together.
Approach: They propose a Visual Relation Extraction framework that generates relation predictions on entity pairs extracted from scanned images and incorporates global structural knowledge into the representations of the entities.
Outcome: The proposed framework outperforms existing methods in fine-tuning setting and yields stronger data-efficient performance in the low-resource setting.
Rethinking Multi-Modal Alignment in Multi-Choice VideoQA from Feature and Sample Perspectives (2022.emnlp-main)

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Challenge: Existing approaches to VideoQA focus on utilizing frame- or object-level visual representations, but they neglect visual-language interactions.
Approach: They propose to break down video into trajectories and first leverage trajectory feature in VideoQA to enhance alignment between two modalities.
Outcome: The proposed method outperforms all the state-of-the-art models on the NExT-QA benchmark.
Infinity-Parser: Layout-Aware Reinforcement Learning with High-quality Document Parsing Dataset (2026.findings-acl)

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Challenge: Existing supervised fine-tuning methods struggle to generalize across document types, leading to poor performance.
Approach: They propose layoutRL, a reinforcement learning framework that optimizes layout understanding through composite rewards integrating normalized edit distance, paragraph count accuracy, and reading order preservation.
Outcome: The proposed model outperforms specialized document parsing systems and general-purpose vision-language models on a broad range of document types, languages, and structural complexities.
Xiaomingbot: A Multilingual Robot News Reporter (2020.acl-demos)

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Challenge: Xiaomingbot is a multilingual and multimodal software robot with four capabilities: news generation, news translation, news reading and avatar animation.
Approach: They propose to build a multilingual and multimodal software robot with four inte- gal capabilities: news generation, news translation, news reading and avatar animation.
Outcome: The proposed system generates Chinese news, then reads it in multiple languages and generates an animated avatar reading it.
DataSeer: A Manager-Centric Collaborative Multi-Agent Framework with Multi-Branch Reasoning for Automated Insight Discovery (2026.findings-acl)

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Challenge: Existing methods for automated insight discovery lack contextual coherence and coverage due to single-path exploration.
Approach: They propose a Manager-Centric Collaborative Framework that integrates planner and executor . it ensures cross-episode contextual coherence and allows for adaptive sub-goal generation .
Outcome: The proposed framework outperforms baselines on InsightBench and Inseval.
KnowDis: Knowledge Enhanced Data Augmentation for Event Causality Detection via Distant Supervision (2020.coling-main)

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Challenge: Existing methods of event causality detection use hand-labeled training data.
Approach: They propose a framework for event causality detection that augments training data via distant supervision.
Outcome: The proposed framework outperforms existing methods on two benchmark datasets . it outperformed previous methods by a large margin assisted with automatically labeled training data.
Med-SRAF: A Multi-Agent Framework for Medical Reasoning via Semantic Routing and Agentic Fusion (2026.findings-acl)

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Challenge: Existing RAG methods suffer from a two-part problem: semantic drift and concatenation fallacy . et al.: rapid development of Large Language Models has led to a paradigm shift in artificial intelligence .
Approach: They propose a multi-agent retrieval augmentation framework guided by medical domain knowledge to address these challenges.
Outcome: The proposed framework outperforms existing general RAG baselines on five widely used medical benchmarks.
Harmonizing the Past, Present, and Future: A Null-Space Constrained Region-Specific Method for Continual Learning in LLMs (2026.acl-long)

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Challenge: Existing continual learning paradigms prioritize instant performance through dense updates, leading to catastrophic forgetting and rapid exhaustion of model capacity.
Approach: They propose a method that preserves previously acquired knowledge and acquires new task-specific skills while preserving sufficient parameter capacity for subsequent adaptation.
Outcome: The proposed method is based on the brain's functional partitioning and can be used to map tasks between specialized and generalist neurons.
Transparentize the Internal and External Knowledge Utilization in LLMs with Trustworthy Citation (2025.findings-acl)

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Challenge: citation generation and retrieval-augmented generation are still lacking in large language models due to hallucinations.
Approach: They propose a retrieval-augmented citation generation task that requires models to generate citations considering both external and internal knowledge while providing trustworthy references.
Outcome: The proposed method achieves better performance across scenarios compared to baselines . retrieval quality, question types, and model knowledge influence trustworthiness .
Interpreting Sentiment Composition with Latent Semantic Tree (2023.findings-acl)

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Challenge: Current researches on sentiment classification are shifting from improving model performance to interpretability.
Approach: They propose a new tree form capable of interpreting sentiment composition in a principled way.
Outcome: The proposed tree can explain sentiment composition in a principled way.
MULFE: A Multi-Level Benchmark for Free Text Model Editing (2024.acl-long)

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Challenge: Large Language Models (LLMs) have impressive capabilities in comprehending human language and vast parametric knowledge obtained from large corpora.
Approach: They propose a multi-level benchmark for free text model editing to bridge the gap . they categorize probe queries into three levels of generalization .
Outcome: The proposed method improves the generalization performance of large langugae models.
Let’s Rectify Step by Step: Improving Aspect-based Sentiment Analysis with Diffusion Models (2024.lrec-main)

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Challenge: Empirical evaluations conducted on eight benchmark datasets underscore the compelling advantages offered by DiffusionABSA when compared against robust baseline models.
Approach: They propose a diffusion model which extracts aspects step by step and learns a denoising process that progressively restores them in a reverse manner.
Outcome: Empirical evaluations on eight benchmark datasets underscore the compelling advantages offered by DiffusionABSA when compared against robust baseline models.
Listening Like Humans: Semantics-Guided Noise-Robust Multimodal Speech Recognition (2026.acl-long)

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Challenge: Severe acoustic degradation results in unreliable ASR outputs . et al., 2024b): critical concerns regarding reliability and fairness of ASR .
Approach: They propose a multimodal framework that reframes ASR as semantics-guided speech reconstruction.
Outcome: The proposed framework achieves an average reduction in WER while also attaining 98.71% BERTScore and 96.7% USE over advanced baselines.
CogKGE: A Knowledge Graph Embedding Toolkit and Benchmark for Representing Multi-source and Heterogeneous Knowledge (2022.acl-demo)

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Challenge: Existing methods focus on entity-centric knowledge, but CogKGE supports heterogeneous knowledge.
Approach: They propose a knowledge graph embedding toolkit to represent multi-source and heterogeneous knowledge.
Outcome: The proposed toolkit provides a unified programming framework for KGE tasks and a series of knowledge representations for downstream tasks.
How Do Large Language Models Capture the Ever-changing World Knowledge? A Review of Recent Advances (2023.emnlp-main)

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Challenge: Large language models (LLMs) are impressive in solving tasks, but they can quickly be outdated after deployment.
Approach: They provide a review of recent advances in aligning deployed large language models with the ever-changing world knowledge.
Outcome: The proposed models can be used to perform various tasks directly through in-context learning or for further fine-tuning for domain-specific uses.
FedED: Federated Learning via Ensemble Distillation for Medical Relation Extraction (2020.emnlp-main)

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Challenge: Existing relation extraction methods require centralizing training data from different medical platforms while holding the privacy-sensitive data puts patients' privacy at risk.
Approach: They propose a federated relation extraction model that trains a central model without sharing or exchange of private local data.
Outcome: The proposed model trains a central model without uploading local parameters, and it performs well on three publicly available datasets.
Document-Level Relation Extraction via Pair-Aware and Entity-Enhanced Representation Learning (2022.coling-1)

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Challenge: Existing document-level relation extraction methods are sparse in relational entity pairs and the representation of entity pairs is insufficient.
Approach: They propose a Pair-Aware and Entity-Enhanced(PAEE) model to solve two challenges . they propose predicting potential relational entity pairs and assembling directional entity pairs .
Outcome: The proposed model can obtain state-of-the-art performance on four benchmark datasets . it can predict potential relational entity pairs and assemble directional entity pairs .
BOSE: A Systematic Evaluation Method Optimized for Base Models (2025.findings-acl)

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Challenge: Existing evaluation methods for large language models (LLMs) are inadequate to provide solid conclusions for key experiments such as data ablation and scaling law.
Approach: They propose a method specifically designed to optimize the evaluation of base models by incorporating two innovations: In-Context Light-instruction Prompt and Blank-ppl for multi-choice tasks with candidate options.
Outcome: The proposed method significantly improves stability and consistency of evaluations during pre-training and consistency between base and instruct models.
Know the Known and the Unknown: Reasonable Answer Generation with Knowledge-Informed Citations (2026.acl-long)

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Challenge: Existing approaches focus on generating multi-level citations linked to specific references, making it verifiable and trustworthy.
Approach: They propose a new data construction pipeline and a benchmark to improve citation granularity and awareness of unknown information.
Outcome: The proposed model improves on the existing benchmark and data construction pipeline and provides citation granularity and awareness of unknown information.
Joint Semantic and Strategy Matching for Persuasive Dialogue (2023.findings-emnlp)

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Challenge: Persuasive dialogue models rely on utterance semantic matching and a key aspect has been ignored . compared with utterrance semantics, conversation strategies are high-level concepts, which can be informative and provide complementary information to achieve effective persuation.
Approach: They propose to model conversation semantics and strategies to match them using a BERT-like module and an auto-regressive predictor.
Outcome: The proposed model improves state-of-the-art by 5% on a small and 37% on 'large' datasets.
In Prospect and Retrospect: Reflective Memory Management for Long-term Personalized Dialogue Agents (2025.acl-long)

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Challenge: Existing approaches to long-term dialogue memory management fail to capture the natural semantic structure of conversations, leading to fragmented and incomplete representations.
Approach: They propose a mechanism that integrates forward- and backward-looking reflections into a personalized memory bank for effective future retrieval.
Outcome: The proposed mechanism outperforms state-of-the-art benchmarks on a long-term dialogue memory model.
CN-AutoMIC: Distilling Chinese Commonsense Knowledge from Pretrained Language Models (2022.emnlp-main)

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Challenge: Existing commonsense knowledge graphs are limited to English, hindering research in non-English languages.
Approach: They propose a Chinese CKG generated from multilingual PLMs that is translated into Chinese . they propose 'generate-by-category' strategy to reduce invalid generation .
Outcome: The proposed CKG has high quality and diversity, surpassing the direct translation version of similar English CKGs.
HyperCore: Hyperbolic and Co-graph Representation for Automatic ICD Coding (2020.acl-main)

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Challenge: Existing methods for ICD coding ignore Code Hierarchy and Code Co-occurrence . cost of manual coding estimated to be $25 billion per year in the US .
Approach: They propose a hyperbolic representation method to leverage the code hierarchy and a graph convolutional network to utilize the code co-occurrence.
Outcome: The proposed model outperforms state-of-the-art methods on two widely used datasets.
MotivGraph-SoIQ: Integrating Motivational Knowledge Graphs and Socratic Dialogue for Enhanced LLM Ideation (2025.findings-emnlp)

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Challenge: Large Language Models (LLMs) have limitations in grounding ideas and mitigating confirmation bias during refinement.
Approach: They propose a framework that integrates a Motivational Knowledge Graph with a Q-Driven Socratic Ideator to enhance LLM ideation.
Outcome: The proposed framework enhances LLM ideation by integrating a Motivational Knowledge Graph with a Q-Driven Socratic Ideator.
Collective Event Detection via a Hierarchical and Bias Tagging Networks with Gated Multi-level Attention Mechanisms (D18-1)

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Challenge: Existing approaches to ACE event detection treat multiple events in one sentence as independent ones and recognize them separately.
Approach: They propose a hierarchical and bias tagging network framework to detect multiple events in one sentence collectively and a gated multi-level attention mechanism to automatically extract and fuse the sentence-level and document-level information.
Outcome: The proposed framework outperforms state-of-the-art methods on a 2005 ACE dataset.
Distantly Supervised Relation Extraction in Federated Settings (2021.findings-emnlp)

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Challenge: Existing methods to label training datasets using distant supervision are expensive and cannot cover all walks of life.
Approach: They propose a federated denoising framework to suppress label noise in federation . they propose to use a multiple instance learning based denoisation method to select reliable sentences .
Outcome: The proposed method can select reliable sentences via cross-platform collaboration.
Backdooring Instruction-Tuned Large Language Models with Virtual Prompt Injection (2024.naacl-long)

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Challenge: Instruction-tuned Large Language Models (LLMs) can modulate responses based on human instructions, but they can be maliciously steered to impact society in subtle but persistent ways.
Approach: They propose a backdoor attack setting that allows an attacker to inject a virtual prompt into an LLM to steer it without any explicit injection at its input.
Outcome: The proposed method is able to poison the model's instruction tuning data and show that it is highly effective in steering the model.
Scalable Multi-Hop Relational Reasoning for Knowledge-Aware Question Answering (2020.emnlp-main)

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Challenge: Existing work on augmenting question answering models with external knowledge (e.g., knowledge graphs) lacks transparency into the model’s prediction rationale.
Approach: They propose a knowledge-aware approach that equips pre-trained language models with a multi-hop relational reasoning module that performs multi-relational reasoning over subgraphs extracted from external knowledge graphs.
Outcome: The proposed model performs multi-hop, multi-relational reasoning over subgraphs extracted from external knowledge graphs.
Whispers that Shake Foundations: Analyzing and Mitigating False Premise Hallucinations in Large Language Models (2024.emnlp-main)

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Challenge: Large language models generate hallucinated text when confronted with false premise questions . authors propose a method to mitigate false premises hallucinosity .
Approach: They propose a method to constrain false premise attention heads during the model inference process.
Outcome: The proposed method improves performance by constraining false premise attention heads . it yields a notable increase of nearly 20% of model performance .
Generating Temporally-ordered Event Sequences via Event Optimal Transport (2022.coling-1)

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Challenge: Existing methods for temporal event ordering and event infilling ignore the global semantics of events, and the model adopts a word-level objective to model events in texts.
Approach: They propose a temporal event ordering and event infilling task using a model that uses maximum likelihood estimation to model events in texts.
Outcome: The proposed model outperforms existing models on all evaluation datasets.
LINKED: Eliciting, Filtering and Integrating Knowledge in Large Language Model for Commonsense Reasoning (2024.findings-emnlp)

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Challenge: Large language models (LLMs) often exhibit poor performance on knowledge-intensive tasks, such as commonsense reasoning.
Approach: They propose a method to elicit, filter and integrate knowledge in large language models (LINKED) they propose 'reward model' to filter out noisy knowledge and 'take marginal consistent reasoning module'
Outcome: The proposed method outperforms SOTA baselines on two commonsense reasoning tasks.
Transfer Learning for Context-Aware Question Matching in Information-seeking Conversations in E-commerce (P18-2)

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Challenge: Recent researches focus on deep learning and reinforcement learning for multi-turn information seeking conversation systems.
Approach: They propose an efficient and effective multi-turn conversation model based on convolutional neural networks and extend it to adapt the knowledge learned from a resource-rich domain to enhance the performance.
Outcome: The proposed model performs better than the existing model on an industrial chatbot called AliMe Assist.
Wasserstein Distance Regularized Sequence Representation for Text Matching in Asymmetrical Domains (2020.emnlp-main)

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Challenge: Asymmetrical text matching is a fundamental problem in information retrieval and natural language processing.
Approach: They propose a method that regularizes features vectors projected from different domains . WD-Match can be used to improve different text matching methods .
Outcome: The proposed method outperforms existing methods and benchmarks on four datasets.
DCFEE: A Document-level Chinese Financial Event Extraction System based on Automatically Labeled Training Data (P18-4)

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Challenge: Existing methods to extract events from documents are limited due to the high cost of labeling . Experimental results demonstrate the effectiveness of a document-level Chinese financial event extraction system.
Approach: They propose a document-level Chinese financial event extraction framework which detects event mentions and extracts events from financial news.
Outcome: The proposed system detects event mentions and extracts events from financial news . it can generate large scale labeled data and extract events from entire document .
See the World, Discover Knowledge: A Chinese Factuality Evaluation for Large Vision Language Models (2025.findings-acl)

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Challenge: Existing models for large vision language models do not fully reflect their knowledge capacity and reliability, resulting in erroneous outputs that do not align with the image content or provide answers lacking knowledge evidence.
Approach: They propose a Chinese-based benchmark for visual factuality across 8 major topics and 56 subtopics and a multi-hop question construction.
Outcome: The proposed model decouples visual factuality into two parts: seeing the world and discovering knowledge.
SumCSE: Summary as a transformation for Contrastive Learning (2024.findings-naacl)

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Challenge: Sentence embedding models are typically trained using contrastive learning (CL) using human annotations directly or by repurposing other annotated datasets.
Approach: They propose to use generative language models to generate CL data using annotated data.
Outcome: The proposed method outperforms the previous best unsupervised method by 1.8 points and SimCSE, a strong supervised baseline by 0.3 points on the semantic text similarity (STS) benchmark.
LLaSA: Large Language and Structured Data Assistant (2025.naacl-long)

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Challenge: Structured knowledge grounding (SKG) tasks are a key part of many NLP applications.
Approach: They propose a framework for enhancing LLMs' ability to handle structured data . they represent various types of structured data in a unified hypergraph format .
Outcome: The proposed framework outperforms existing methods on SKG tasks using LoRA finetuning.
ZhuJiu: A Multi-dimensional, Multi-faceted Chinese Benchmark for Large Language Models (2023.emnlp-demo)

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Challenge: Various types of LLMs have recently been rapidly developing, such as Llama2 and ChatGLM2 .
Approach: They propose a benchmark that comprehensively evaluates LLMs across 7 ability dimensions covering 51 tasks.
Outcome: The proposed benchmarks are comprehensive and systematic, with a high level of accuracy and authority.
PRAM: An End-to-end Prototype-based Representation Alignment Model for Zero-resource Cross-lingual Named Entity Recognition (2023.findings-acl)

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Challenge: Existing methods to address the named entity recognition problem are limited and lack explicit optimization specific to the task.
Approach: They propose a prototype-based representation alignment model for a cross-lingual named entity recognition task using labeled source language data.
Outcome: The proposed model outperforms existing state-of-the-art methods in some challenging scenarios.
Boost, Disentangle, and Customize: A Robust System2-to-System1 Pipeline for Code Generation (2025.findings-acl)

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Challenge: Existing systems 2 methods for code generation are difficult to implement due to the complex hidden reasoning process and heterogeneous data distribution.
Approach: They propose a framework that Boosts reasoning exploration via multi-agent collaboration and Disentangles heterogeneous data into specialized experts.
Outcome: The proposed framework outperforms state-of-the-art methods on APPS and CodeContest benchmarks and achieves 73.8% accuracy on hard problems.
Dual-Reasoner: Bridging Interleaved Atomicity and Streaming Latency via Thinking-while-Talking (2026.findings-acl)

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Challenge: Existing methods to integrate Chain-of-Thought into spoken dialogue models incur prohibitive latency.
Approach: They propose a Streaming Masking Mechanism to ensure uninterrupted audio streaming . they use a quadruple-constraint system to reconstruct logical atomicity .
Outcome: Experimental results show that Dual-Reasoner improves speech generation performance with low latency.
ControlAudio: Tackling Text-Guided, Timing-Indicated and Intelligible Audio Generation via Progressive Diffusion Modeling (2026.acl-long)

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Challenge: Recent efforts on text-to-audio generation are exploring fine-grained controllability . however, their performance at scale is limited due to data scarcity .
Approach: They propose a multi-task learning problem for high-controllability text-to-audio generation . they propose scalable diffusion transformers that augment condition information in sequence .
Outcome: The proposed method outperforms existing methods on objective and subjective evaluations.
HybridKV: Hybrid KV Cache Compression for Efficient Multimodal Large Language Model Inference (2026.acl-long)

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Challenge: Multimodal Large Language Models (MLLMs) are hindered by the rapid growth of key–value (KV) caches.
Approach: They propose a hybrid KV cache compression framework that reduces KV memory by 7.9 and speeds up decoding by 1.52.
Outcome: Experiments on 11 multimodal benchmarks show that HYBRIDKV cuts KV cache memory by 7.9 and speeds up decoding by 1.52.
A Reinforced Generation of Adversarial Examples for Neural Machine Translation (2020.acl-main)

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Challenge: Neural machine translation systems fail on less decent inputs, which may harm the credibility of these systems.
Approach: They propose a paradigm that generates adversarial examples using reinforcement learning to expose pitfalls for a given performance metric.
Outcome: The proposed paradigm produces stable attacks with meaning-preserving adversarial examples.
Beyond Unimodal Shortcuts: MLLMs as Cross-Modal Reasoners for Grounded Named Entity Recognition (2026.findings-acl)

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Challenge: Existing approaches to GMNER use MLLMs as auxiliary tools, causing cumulative error propagation and a lack of rigorous cross-modal verification.
Approach: They propose a model that enforces structured cross-modal reasoning through Multi-style Reasoning Schema Injection and Constraint-guided Verifiable Optimization.
Outcome: The proposed model enforces structured cross-modal reasoning through multi-style Reasoning Schema Injection and Constraint-guided Verifiable Optimization.
CiteLab: Developing and Diagnosing LLM Citation Generation Workflows via the Human-LLM Interaction (2025.acl-demo)

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Challenge: Existing frameworks for enabling Large Language Models to generate citations are lacking . however, they can still produce hallucinated responses that are non-factual or irrelevant to the input.
Approach: They propose an open-source and modular framework for enabling LLMs to generate citations in Question-Answering tasks.
Outcome: The proposed framework is extensible and paired with a visual interface, Citefix, facilitating case study and modification of existing citation generation methods.
A Study of Implicit Ranking Unfairness in Large Language Models (2024.findings-emnlp)

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Challenge: Large language models (LLMs) have demonstrated superior ability to serve as ranking models, but they will exhibit discriminatory ranking behaviors based on users’ sensitive attributes (gender).
Approach: They propose an evaluation method to investigate the severity of implicit ranking unfairness and a pair-wise regression method to conduct fair-aware data augmentation for LLM fine-tuning.
Outcome: The proposed method outperforms existing methods in ranking fairness, achieving this with only a small reduction in accuracy.
SpecVLM: Enhancing Speculative Decoding of Video LLMs via Verifier-Guided Token Pruning (2025.emnlp-main)

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Challenge: Video large language models (Vid-LLMs) rely on dense video token representations and require substantial memory and computational overhead in both prefilling and decoding.
Approach: They propose a training-free speculative decoding framework that prunes up to 90% of video tokens to enable efficient speculation without sacrificing accuracy.
Outcome: The proposed framework achieves 2.68 speedup on LLaVA-OneVision-72B and 2.11 speed up on Qwen2.5-VL-32B.
Augmentation, Retrieval, Generation: Event Sequence Prediction with a Three-Stage Sequence-to-Sequence Approach (2022.coling-1)

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Challenge: Existing methods to predict event sequences are complex and ignore the knowledge of external events.
Approach: They propose a statistical induction problem to generate a sequence of events by exploring the similarity between the given goal and known sequences of events.
Outcome: The proposed model outperforms existing methods on an event sequence prediction task.
OpenS2S: Advancing Fully Open-Source End-to-End Empathetic Large Speech Language Model (2025.emnlp-demos)

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Challenge: Empathetic speech models are increasingly closed off, leaving details about the architecture, data and development opaque to researchers.
Approach: They propose an open-source empathetic speech-to-text model with a streaming interleaved decoding architecture and a data pipeline to enable end-to end training.
Outcome: The proposed model is open-source and transparent, with no data or data required to build it.
Refining Sentence Embedding Model through Ranking Sentences Generation with Large Language Models (2025.findings-acl)

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Challenge: Sentence embedding is essential for many NLP tasks, but reliance on manual labels limits scalability.
Approach: They propose a method for controlling the generation direction of large language models in the latent space by integrating ranking information and semantic information.
Outcome: The proposed method achieves new SOTA performance with a modest cost in ranking sentence synthesis.
How Susceptible are Large Language Models to Ideological Manipulation? (2024.emnlp-main)

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Challenge: Large Language Models (LLMs) have the potential to exert substantial influence on public perceptions and interactions with information.
Approach: They examine how LLMs can learn and generalize ideological biases from their instruction-tuning data.
Outcome: The LLMs show a startling ability to absorb ideology from one topic and generalize it to even unrelated ones.
Landmark Embedding: A Chunking-Free Embedding Method For Retrieval Augmented Long-Context Large Language Models (2024.acl-long)

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Challenge: Existing methods for retrieval augmentation work with chunked contexts, which leads to poor quality of semantic representation and incomplete retrieval of useful information.
Approach: They propose a method for retrieval augmentation of long-context language modeling using landmark embedding.
Outcome: The proposed method outperforms existing retrieval methods with a notable advantage.
How to Determine the Most Powerful Pre-trained Language Model without Brute Force Fine-tuning? An Empirical Survey (2023.findings-emnlp)

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Challenge: Transferability estimation has been a topic of great interest in computer vision fields . a lack of a comprehensive comparison between these estimation methods is a problem .
Approach: They conduct a thorough survey of existing methods to find the most suitable model . they also outline difficulties of consideration of training details and applicability to text generation .
Outcome: The proposed methods perform well with superiorities in effectiveness and efficiency.
Why Not Act on What You Know? Unleashing Safety Potential of LLMs via Self-Aware Guard Enhancement (2025.findings-acl)

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Challenge: Large Language Models (LLMs) have demonstrated impressive capabilities across various tasks but are vulnerable to meticulously crafted jailbreak attacks.
Approach: They propose a training-free defense strategy to align LLMs’ strong safety discrimination performance with their relatively weaker safety generation ability.
Outcome: The proposed strategy achieves an average 99% success rate against numerous complex and covert jailbreak methods while maintaining helpfulness on general benchmarks.
ZhuJiu-Knowledge: A Fairer Platform for Evaluating Multiple Knowledge Types in Large Language Models (2024.naacl-demo)

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Challenge: evaluating the knowledge of large language models (LLMs) is crucial, and rapid advancement in large language modeling has heightened the importance of model evaluations.
Approach: They propose a fairer benchmark for evaluating multiple knowledge types of LLMs by focusing on commonsense knowledge, world knowledge, and language knowledge.
Outcome: The proposed framework evaluates 14 current mainstream LLMs and provides a detailed discussion and analysis of their results.
HICD: Hallucination-Inducing via Attention Dispersion for Contrastive Decoding to Mitigate Hallucinations in Large Language Models (2025.findings-acl)

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Challenge: Large Language Models (LLMs) often generate hallucinations, producing outputs that are contextually inaccurate or factually incorrect.
Approach: They propose a method that selects attention heads crucial to the model's prediction as inducing heads and induces hallucinations by dispersing attention of these inducers.
Outcome: The proposed method significantly improves performance on tasks requiring contextual faithfulness, reading comprehension, and question answering.
A Large-Scale Chinese Multimodal NER Dataset with Speech Clues (2021.acl-long)

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Challenge: Using a large-scale dataset, we explore Chinese named entity recognition (NER) with both textual and acoustic contents.
Approach: They propose a Chinese multimodal named entity recognition dataset . their corpus contains 42,987 annotated sentences and 71 hours of speech data .
Outcome: The proposed model yields state-of-the-art (SoTA) results on Chinese multimodal named entity recognition (NER) based on 42,987 annotated sentences and 71 hours of speech data.
MobiLoRA: Accelerating LoRA-based LLM Inference on Mobile Devices via Context-aware KV Cache Optimization (2025.acl-long)

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Challenge: MobiLoRA focuses on optimizing the key-value (KV) caches due to the limited computing and memory resources of mobile devices.
Approach: They propose to optimize the key-value caches due to limited computing resources . they propose similarity-aware delta encoding for semantic-level contexts .
Outcome: The proposed model accelerates LoRA-based LLM inference by 57.6% on mobile devices.
Realistic Training Data Generation and Rule Enhanced Decoding in LLM for NameGuess (2025.emnlp-main)

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Challenge: Abbreviated column names often harm downstream tasks, causing performance drops of 10.54, 40.50, and 3.83 percentage points.
Approach: They propose a method that integrates a subsequence abbreviation generator trained on human-annotated data and collects non-subsequent abbrevations to improve the training set.
Outcome: The proposed approach improves on the English NameGuess task and surpasses state-of-the-art LLMs.
Open Set Relation Extraction via Unknown-Aware Training (2023.acl-long)

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Challenge: Existing supervised relation extraction methods can still misclassify unknown relations into known relations due to the lack of supervision signals.
Approach: They propose a method that regularizes the model by dynamically synthesizing negative instances that can provide the missing supervision signals.
Outcome: The proposed method achieves SOTA unknown relation detection without compromising the classification of known relations.
Semantic Sentence Matching via Interacting Syntax Graphs (2022.coling-1)

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Challenge: Extensive research efforts have been devoted to the task of matching two natural language sentences.
Approach: They propose to embed syntactic structures into an embedding vector and combine them with other features to predict matching scores.
Outcome: The proposed method outperforms the state-of-the-art methods on three public datasets and can interpret sentences in interpretable way.
Measuring Social Bias in Vision-Language Models with Face-Only Counterfactuals from Real Photos (2026.acl-long)

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Challenge: Vision-Language Models (VLMs) are increasingly deployed in socially consequential settings . attribution under visual confounding is a central challenge in measuring social bias .
Approach: They propose a face-only counterfactual evaluation paradigm that isolates demographic effects while preserving real-image realism.
Outcome: The proposed paradigm isolates demographic effects while preserving real-image realism.
Natural Language Video Localization with Learnable Moment Proposals (2021.emnlp-main)

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Challenge: Existing methods for video moment localization have poor performance due to predefined rules.
Approach: They propose a model with a fixed set of learnable moment proposals with 'border-aware loss' they propose to localize the video moment corresponding to the query by locating the start and end timestamps in an untrimmed video.
Outcome: The proposed model outperforms state-of-the-art models on two challenging benchmarks.
RED: Unleashing Token-Level Rewards from Holistic Feedback via Reward Redistribution (2025.emnlp-main)

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Challenge: Experimental results demonstrate the superiority of our approach to aligning large language models with human preferences.
Approach: They propose a method that evaluates and assigns specific credit to each token using an off-the-shelf reward model.
Outcome: The proposed method evaluates and assigns specific credit to each token using an off-the-shelf reward model.
LearnDA: Learnable Knowledge-Guided Data Augmentation for Event Causality Identification (2021.acl-long)

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Challenge: Existing methods for event causality identification (ECI) rely on annotated training data.
Approach: They propose a method to augment training data for event causality identification by iteratively generating new examples and classifying event causalities in a dual learning framework.
Outcome: The proposed method outperforms existing methods on EventStoryLine and Causal-TimeBank.
KERS: A Knowledge-Enhanced Framework for Recommendation Dialog Systems with Multiple Subgoals (2021.findings-emnlp)

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Challenge: Existing frameworks for multi-subgoal dialogs require a system to build a social bond with users to gain trust and develop affinity.
Approach: They propose a framework for common knowledge-based multi-subgoal dialogs that divides up conversations with multiple subgoals and propose mechanisms to filter noisy knowledge and to include cleaned knowledge in the dialog response generation process.
Outcome: The proposed framework obtains state-of-the-art results on a DuRecDial dataset in both automatic and human evaluation.
Domain-Lifelong Learning for Dialogue State Tracking via Knowledge Preservation Networks (2021.emnlp-main)

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Challenge: Existing offline DST models require a fixed dataset to train . Existing domain-lifelong learning methods are impractical in real-world applications .
Approach: They propose a domain-lifelong learning method to continuously train a DST model on new data to learn incessantly emerging new domains while avoiding catastrophically forgetting old learned domains.
Outcome: The proposed method outperforms state-of-the-art lifelong learning methods by 4.25% and 8.27% on the MultiWOZ and the SGD benchmarks.
Uncertainty-aware Parameter-Efficient Self-training for Semi-supervised Language Understanding (2023.findings-emnlp)

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Challenge: Existing methods for pre-trained language models rely on noisy data, which can be expensive if all parameters are updated.
Approach: They propose a self-training framework that incorporates Monte Carlo dropouts into the model and judiciously selects reliable pseudo-labeled examples based on confidence and certainty.
Outcome: The proposed framework improves performance and efficiency over multiple tasks over multiple datasets.
PRA-RAG: Provably Robust Aggregation in Retrieval-Augmented Generation against Retrieval Corruption (2026.findings-acl)

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Challenge: Existing defense mechanisms lack theoretical robustness guarantees and perform unreliably when the LLM has limited knowledge of the retrieved content.
Approach: They propose a provably robust retrieval aggregation algorithm designed to defend against poisoning attacks on retrieved texts.
Outcome: Experiments show that PRA-RAG reduces the attack success rate to as low as 1% while maintaining an accuracy of 71%, significantly outperforming representative state-of-the-art (SOTA) methods.
CogMG: Collaborative Augmentation Between Large Language Model and Knowledge Graph (2024.acl-demos)

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Challenge: Large language models (LLMs) are susceptible to generating hallucinated content and often encompass factually inaccurate information.
Approach: They propose a framework that leverages knowledge graphs to address the limitations of Large Language Models (LLMs) they identify and decompose required knowledge triples that are not present in the KG, enriching them and aligning updates with real-world demands.
Outcome: The proposed framework reduces hallucinations and increases factual accuracy in QA scenarios while retaining the same quality of knowledge.
On the Step Length Confounding in LLM Reasoning Data Selection (2026.findings-acl)

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Challenge: Existing pipelines generate long reasoning data from more capable Large Language Models (LLMs) and apply manually heuristic or naturalness-based selection methods to filter high-quality samples.
Approach: They propose to use supervised fine-tuning to generate long reasoning data from more capable Large Language Models and apply manually heuristic or naturalness-based selection methods to filter high-quality samples.
Outcome: Experiments on four LLMs and five evaluation benchmarks show that the proposed approach is effective in mitigating step length confounding problem.
The UIR Uncertainty Corpus for Chinese: Annotating Chinese Microblog Corpus for Uncertainty Identification from Social Media (L18-1)

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Challenge: Uncertainty identification is an important semantic processing task, critical to the quality of information in terms of factuality in many NLP techniques and applications.
Approach: They propose to annotate Chinese microblogs with an open uncertainty corpus . they propose to use contextual uncertain semantics rather than traditional cue-phrases to identify uncertainty .
Outcome: The proposed corpus can be used to identify uncertainty in social media texts.
Reconstructing Event Regions for Event Extraction via Graph Attention Networks (2020.aacl-main)

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Challenge: Existing approaches for event extraction focus on sentence-level event extraction, but they lack a broader view of the document context.
Approach: They build graphs with candidate event filler extractions enriched by sentential embeddings as nodes and use graph attention networks to identify event regions in a document and aggregate event information.
Outcome: The proposed method performs well on two languages and shows that it is faster than previous methods.
Towards Effective and Efficient Continual Pre-training of Large Language Models (2025.acl-long)

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Challenge: Continual pre-training (CPT) has been an important approach for adapting language models to specific domains or tasks.
Approach: They propose a Continual pre-training method that can greatly improve Chinese language ability and scientific reasoning ability of LLMs.
Outcome: The proposed method can greatly improve Chinese language ability and scientific reasoning ability of LLMs.
Rapid Diffusion: Building Domain-Specific Text-to-Image Synthesizers with Fast Inference Speed (2023.acl-industry)

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Challenge: Text-to-Image Synthesis (TIS) aims to generate images based on textual inputs . but, current diffusion-based models lack entity knowledge and low inference speed .
Approach: They propose a framework for training and deploying latent diffusion models with rich entity knowledge injected and optimized networks.
Outcome: The proposed framework improves image quality and inference speed and can be used in industrial applications.
Third-Person Appraisal Agent: Simulating Human Emotional Reasoning in Text with Large Language Models (2025.findings-emnlp)

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Challenge: Emotional reasoning is essential for improving human-AI interactions, especially in mental health support and empathetic systems.
Approach: They propose a third-person appraisal agent that simulates human-like emotional reasoning through three phases: Primary Appraisal, Secondary Appraisals, and Reappraisal.
Outcome: The proposed model outperforms baseline LLMs in various emotional reasoning tasks, demonstrating superior generalization and interpretability.
Class Lifelong Learning for Intent Detection via Structure Consolidation Networks (2023.findings-acl)

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Challenge: Existing intent detection models can only handle predefined intent classes in the offline environment.
Approach: They propose a method that continually learns new intent classes from new data . structure-based retrospection and contrastive knowledge distillation are used to solve these problems .
Outcome: The proposed method outperforms existing models on three benchmarks.
Tailor: A Soft-Prompt-Based Approach to Attribute-Based Controlled Text Generation (2023.acl-long)

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Challenge: Existing work focuses on generating sentences satisfying pre-specified attributes such as topic and sentiment, yet suffers from increases in storage and inference time.
Approach: They propose a method that uses a pre-trained continuous vector to generate a fixed pre-trainable language model to satisfy a specified attribute.
Outcome: The proposed model can achieve improvements on eleven attribute-specific generation tasks with 0.08% extra training parameters.
Unlocking the Future: Exploring Look-Ahead Planning Mechanistic Interpretability in Large Language Models (2024.emnlp-main)

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Challenge: Recent studies have shown that large language models may possess preliminary planning capabilities.
Approach: They examine the look-ahead planning mechanism in large language models from the perspectives of information flow and internal representations.
Outcome: The proposed model can decode the decision from the output of MHSA in the middle layers at the last token.
GUICourse: From General Vision Language Model to Versatile GUI Agent (2025.acl-long)

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Challenge: Graphical User Interfaces (GUIs) are a pivotal medium for human-computer interaction.
Approach: They propose a series of datasets for training visual-based GUI agents using general VLMs.
Outcome: The proposed GUICourse datasets show that even a small-sized GUI agent performs better on GUI tasks.
Keyphrase Generation with Correlation Constraints (D18-1)

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Challenge: Existing methods for keyphrase generation ignore correlation among keyphrases, resulting in duplication and coverage issues.
Approach: They propose a new sequence-to-sequence architecture for keyphrase generation that captures correlation among keyphrases by preceding phrases to eliminate duplicate phrases and improve result coherence.
Outcome: The proposed model outperforms the state-of-the-art method on benchmark datasets in terms of accuracy and diversity.
FrontCoder: Scaling Visual Fidelity in Front-End Code Generation (2026.findings-acl)

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Challenge: Existing work on front-end code generation fails to provide visual fidelity and rendering quality for front- end developers.
Approach: They propose a three-stage pipeline to enhance front-end code generation capabilities in LLMs . they use synthetic data, quality-controlled supervised fine-tuning, and reinforcement learning .
Outcome: The proposed model achieves competitive performance with frontier models while maintaining generation efficiency.
Probing into the Root: A Dataset for Reason Extraction of Structural Events from Financial Documents (2021.eacl-main)

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Challenge: Existing methods for event reason extraction are far from resolving this problem.
Approach: They propose a task to extract causal explanations from document-level texts . they use a dataset FinReason for evaluation to provide Reasons annotation for financial events .
Outcome: The proposed task performs better than existing methods on a dataset of 8,794 documents, 12,861 financial events and 11,006 reason spans.
Clinical-Coder: Assigning Interpretable ICD-10 Codes to Chinese Clinical Notes (2020.acl-demos)

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Challenge: Existing methods of automatic coding prediction have been successful, but the interpretability of predicted codes is a challenge.
Approach: They propose an online system that can predict ICD codes for Chinese clinical notes by using a Dilated Convolutional Attention network with N-gram Matching mechanism.
Outcome: The proposed system is able to provide supporting information in clinical decision making.
ItD: Large Language Models Can Teach Themselves Induction through Deduction (2024.acl-long)

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Challenge: Recent studies have shown that Large Language Models (LLMs) have limited ability to conduct induction.
Approach: They propose a framework to enable LLMs to teach themselves induction through deduction.
Outcome: The proposed framework improves performance on two induction benchmarks and shows that it can be used to teach induction through deduction.
LSSF: Safety Alignment for Large Language Models through Low-Rank Safety Subspace Fusion (2025.acl-long)

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Challenge: Existing safety alignment methods rely on fine-tuning, which inadvertently leads to the increased complexity and computational resources required.
Approach: They propose a safety re-alignment framework with Low-Rank Safety Subspace Fusison that exploits low-rank safety characteristics of LLMs by constructing a low-ranked projection matrix to extract the principal components of safety vectors.
Outcome: The proposed method exploits low-rank safety subspace of the LLMs and is stable during fine-tuning process and is isolated from the model’s general capabilities.
Leverage Lexical Knowledge for Chinese Named Entity Recognition via Collaborative Graph Network (D19-1)

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Challenge: Existing models for named entity recognition (NER) lack word boundaries information, which is a major barrier to developing a high performance named entity system.
Approach: They propose a Chinese named entity recognition system with word boundaries information . they use word-level representations and character-level models to integrate lexical knowledge into Chinese NER .
Outcome: The proposed model outperforms the state-of-the-art model and achieves a speed of up to 15 times faster than the SOTA model.
Optimizing Language Models with Fair and Stable Reward Composition in Reinforcement Learning (2024.emnlp-main)

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Challenge: Recent research has developed algorithms for reinforcement learning from human feedback and AI-generated feedback.
Approach: They propose a method for reinforcement learning from human feedback and AI-generated feedback that incorporates weighting, ranking, and constraining to handle disparate rewards.
Outcome: The proposed method reduces disparity and enhances stability among rewards . empirical results show that the proposed method is efficient and straightforward .
Cross-Domain Review Helpfulness Prediction Based on Convolutional Neural Networks with Auxiliary Domain Discriminators (N18-2)

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Challenge: Recent studies on review helpfulness prediction require labeled samples for each domain/category of interest.
Approach: They propose a convolutional neural network based model which leverages word-level and character-based representations to transfer knowledge between domains.
Outcome: The proposed model outperforms the state-of-the-art on the Amazon product review dataset.
Towards Better Chain-of-Thought: A Reflection on Effectiveness and Faithfulness (2025.findings-acl)

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Challenge: Chain-of-thought (CoT) prompting demonstrates varying performance under different reasoning tasks.
Approach: They propose to recall extra information from the question to enhance CoT generation and evaluate CoTs based on their information gain.
Outcome: The proposed method improves both the faithfulness and effectiveness of CoT and evaluates it based on their information gain.
Incremental Event Detection via Knowledge Consolidation Networks (2020.emnlp-main)

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Challenge: Existing approaches to event detection require a fixed set of pre-defined event types . existing methods cannot handle semantic ambiguity and training data imbalance problems .
Approach: They propose a Knowledge Consolidation Network to address these issues . they propose to use a prototype enhanced retrospection and hierarchical distillation to mitigate the adverse effects of semantic ambiguity and class imbalance.
Outcome: The proposed method outperforms the state-of-the-art model by 19% and 13.4% of whole F1 score on ACE and TAC benchmarks.
Automatic Song Translation for Tonal Languages (2022.findings-acl)

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Challenge: Existing automatic song translation systems for tonal languages do not match the number of notes and beat the original rhythm of the song.
Approach: They propose three criteria for effective AST: preserving meaning, singability and intelligibility.
Outcome: The proposed system balances semantics and singability with human evaluations.
Document-level Event Extraction via Parallel Prediction Networks (2021.acl-long)

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Challenge: Document-level event extraction (DEE) is indispensable when events are described throughout a document.
Approach: They propose a document-level event extraction model that can extract structured events from a text in parallel.
Outcome: The proposed model outperforms current state-of-the-art methods on a document-level event extraction task.
Leveraging Estimated Transferability Over Human Intuition for Model Selection in Text Ranking (2024.emnlp-main)

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Challenge: Existing methods for text ranking are based on intuition, but their estimated transferability may not align well with the objectives of text ranking.
Approach: They propose to compute expected rank as transferability, explicitly reflecting the model’s ranking capability.
Outcome: The proposed method shows significant improvements over previous classification-oriented TE methods, human intuition, and ChatGPT with minor time consumption.
Zero-Shot Cross-Lingual Document-Level Event Causality Identification with Heterogeneous Graph Contrastive Transfer Learning (2024.lrec-main)

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Challenge: Existing studies focus on sentence-level ECI with high-resource languages, leaving document-level DECI with low-resourced languages under-explored.
Approach: They propose a Heterogeneous Graph Interaction Model with Multi-granularity Contrastive Transfer Learning for zero-shot cross-lingual ECI.
Outcome: The proposed model outperforms the state-of-the-art model on monolingual and multilingual scenarios by 9.4% and 8.2% of average F1 score.
OneGen: Efficient One-Pass Unified Generation and Retrieval for LLMs (2024.findings-emnlp)

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Challenge: Recent advances in Large Language Models (LLMs) have significantly enhanced the generative capabilities for various NLP tasks, but they still suffer from hallucinations due to their exclusive reliance on parametric knowledge.
Approach: They propose a framework that integrates retrieval tokens generated autoregressively into a single LLM to handle both tasks simultaneously in a unified forward pass.
Outcome: The proposed framework bridges the traditionally separate training approaches for generation and retrieval by incorporating retrieval tokens generated autoregressively.
LLaSE-G1: Incentivizing Generalization Capability for LLaMA-based Speech Enhancement (2025.acl-long)

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Challenge: Recent advances in language models have demonstrated strong capabilities in semantic understanding and contextual modeling.
Approach: They propose a LLaMA-based language model that incentivizes generalization capabilities for speech enhancement.
Outcome: The proposed language model outperforms prior task-specific discriminative and generative models in acoustic enhancement tasks.
LogiGraph: Logical Reasoning with Contrastive Learning and Lightweight Graph Networks (2025.coling-main)

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Challenge: Existing methods emphasize contextual semantics while others pay more attention to explicit logical features. Existing models utilize graph convolutional networks (GCN) for node updates, still exhibiting some shortcomings.
Approach: They propose a logical reasoning method with contrastive learning and lightweight graph networks (LogiGraph) they employ conjunction and punctuation marks as two types of edges to construct a dual graph.
Outcome: The proposed method improves the GCN and employs conjunction and punctuation marks as two types of edges to construct a dual graph.
CogIE: An Information Extraction Toolkit for Bridging Texts and CogNet (2021.acl-demo)

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Challenge: CogNet is a knowledge base that integrates three types of knowledge: linguistic knowledge, world knowledge and commonsense knowledge.
Approach: They propose an information extraction toolkit called CogIE that is a bridge connecting raw texts and CogNet.
Outcome: The proposed toolkit can ground raw texts to CogNet and leverage different types of knowledge to enrich extracted results.
A Survey of Reinforcement Learning for Large Language Models under Data Scarcity: Challenges and Solutions (2026.acl-long)

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Challenge: Existing research on reinforcement learning for LLMs under data scarcity has not been unified.
Approach: They propose a top-up hierarchical framework built around three complementary perspectives: data-centric, training-centric and framework-centric.
Outcome: The proposed framework provides a clear conceptual foundation for understanding the design space of data-efficient RL for large language models and to guide researchers working in this emerging area.
Train in Vain: Functionality-Preserving Poisoning to Prevent Unauthorized Use of Code Datasets (2026.findings-acl)

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Challenge: Existing methods for dataset poisoning require full-dataset poison, which breaks code compilability.
Approach: They propose a functionality-preserving poisoning approach that injects short, compilable weak-use fragments into executed code paths.
Outcome: The proposed method contaminates 10% of the dataset while maintaining 100% compilability and functional correctness.
Making Every Step Effective: Jailbreaking Large Vision-Language Models Through Hierarchical KV Equalization (2025.findings-emnlp)

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Challenge: HKVE selectively accepts gradient optimization results based on the distribution of attention scores across different layers, ensuring that every optimization step positively contributes to the attack.
Approach: They propose a framework that selectively accepts gradient optimization results based on the distribution of attention scores across different layers and selectively takes them into account when calculating the attack success rate.
Outcome: The proposed framework outperforms existing methods by achieving success rates of 75.08% on MiniGPT4, 85.84% on LLaVA and 81.00% on Qwen-VL.
Complex Event Schema Induction with Knowledge-Enriched Diffusion Model (2023.findings-emnlp)

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Challenge: Existing studies on event schema induction have been hindered by errors and data quality issues.
Approach: They propose a knowledge-enriched discrete diffusion model that distills event scenario knowledge from LLMs.
Outcome: The proposed model achieves outstanding performance across evaluation metrics.
A Wolf in Sheep’s Clothing: Generalized Nested Jailbreak Prompts can Fool Large Language Models Easily (2024.naacl-long)

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Challenge: Existing methods for generating 'jailbreaks' suffer from manual design or require optimization on other white-box models, which compromises either generalization or efficiency.
Approach: They propose a framework that leverages LLMs to generate effective jailbreak prompts and a generalized framework that can be used to generate prompts.
Outcome: The proposed framework improves the attack success rate while reducing the time cost compared to baselines.
FashionKLIP: Enhancing E-Commerce Image-Text Retrieval with Fashion Multi-Modal Conceptual Knowledge Graph (2023.acl-industry)

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Challenge: Recent advances in visual-language pre-trained (VLP) models have greatly improved cross-modal retrieval performance . however, the fine-grained interactions between objects from different modalities are far from well-established . e-commerce domain lacks sufficient training data and fine-granular cross-modulal knowledge .
Approach: They propose a visual-language pre-trained (VLP) image-text retrieval model that integrates cross-modal knowledge into the model to improve performance.
Outcome: The proposed model improves performance on e-commerce image-text retrieval task by a large margin.
Towards Interpretable Clinical Diagnosis with Bayesian Network Ensembles Stacked on Entity-Aware CNNs (2020.acl-main)

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Challenge: a novel framework for text-based diagnosis of diseases requires appropriate balance between accuracy and interpretability.
Approach: They propose a framework that stacks Bayesian Network Ensembles on top of CNN to build an accurate yet interpretable diagnosis system.
Outcome: The proposed framework outperforms the previous automatic diagnosis methods in accuracy performance and the diagnosis explanation of the framework is reasonable.
Knowledge-Enriched Event Causality Identification via Latent Structure Induction Networks (2021.acl-long)

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Challenge: Existing methods for identifying causal relations of events are limited . Existing approaches cannot handle well the problem, especially in the condition of lacking training data.
Approach: They propose a Latent Structure Induction Network to integrate external structural knowledge into a causality reasoning task.
Outcome: The proposed approach outperforms existing state-of-the-art methods on two widely used datasets.
Automatic ICD Coding via Interactive Shared Representation Networks with Self-distillation Mechanism (2021.acl-long)

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Challenge: Existing methods for ICD coding ignore the long-tail of code frequency or noisy clinical notes.
Approach: They propose to use an interactive shared representation network to model code co-occurrences while focusing on the clinical note's noteworthy part and extract valuable information through a self-distillation learning mechanism to solve the long-tail problem.
Outcome: The proposed model reduces the long-tail of code frequency and noise in clinical notes and extracts valuable information through a self-distillation learning mechanism.
MathAgent: Adversarial Evolution of Constraint Graphs for Mathematical Reasoning Data Synthesis (2026.findings-acl)

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Challenge: Current approaches to synthesising high-quality mathematical reasoning data without human priors suffer from mode collapse and limited logical complexity.
Approach: They propose a hierarchical synthesis framework that formulates data synthesis as an unsupervised optimization problem over a constraint graph followed by semantic instantiation rather than a direct text generation task.
Outcome: The proposed framework outperforms widely-used datasets on eight mathematical benchmarks.
RAG-RewardBench: Benchmarking Reward Models in Retrieval Augmented Generation for Preference Alignment (2025.findings-acl)

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Challenge: Existing retrieval augmented language models often overlook effective alignment with human preferences.
Approach: They propose a benchmark to evaluate RMs in retrieval augmented language models . they incorporate 18 RAG subsets, six retrievers, and 24 RALMs to increase diversity .
Outcome: The proposed benchmark combines 18 RAG subsets, six retrievers, and 24 RALMs to increase diversity of data sources.
RTCFake: Speech Deepfake Detection in Real-Time Communication (2026.findings-acl)

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Challenge: Existing detection studies focus on offline simulations and struggle to cope with complex distortions introduced during RTC transmission.
Approach: They propose a large-scale speech deepfake dataset tailored for RTC scenarios . the dataset is constructed by transmitting speech through multiple social media and conferencing platforms .
Outcome: The proposed dataset is constructed by transmitting speech through multiple mainstream social media and conferencing platforms, enabling precise pairing between offline and online speech.
UNICORN: A Unified Causal Video-Oriented Language-Modeling Framework for Temporal Video-Language Tasks (2024.emnlp-main)

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Challenge: Recent advances in large multimodal models have encouraged the development of large multi-modal models . however, it is unclear how to extend these models to the more complex video domain .
Approach: They propose a visual instruction tuning framework to address temporal video-language tasks . they collect a dataset and fine-tune the framework on instruction-following data .
Outcome: The proposed model can perform better on established temporal video-language tasks without training objectives and intensive pre-training.
DTELS: Towards Dynamic Granularity of Timeline Summarization (2025.naacl-long)

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Challenge: Existing timeline summarizations lack flexibility to meet diverse granularity needs . a fine-grained timeline showing the technical details is preferred for news topics .
Approach: They propose a new paradigm to construct adaptive timelines based on user instructions or requirements.
Outcome: The proposed timelines are informative and granularly consistent, but they struggle to generate consistent timelines.
Non-Parametric Domain Adaptation for End-to-End Speech Translation (2022.emnlp-main)

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Challenge: End-to-end speech translation (E2E-ST) systems have received increasing attention due to its less error propagation, lower latency and fewer parameters.
Approach: They propose a non-parametric method that leverages in-domain text translation corpus to achieve domain adaptation for E2E-ST systems.
Outcome: The proposed method outperforms the existing in-domain fine-tuning strategies on the Europarl-ST benchmark.
Towards Explainable Diagnosis: A Self-learned Explanatory Knowledge Base Approach (2026.acl-long)

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Challenge: Large language models (LLMs) have great potential to facilitate explainable diagnosis, but their effectiveness is often constrained by insufficient diagnostic expertise.
Approach: They propose a unified LLM-based framework for faithful and explainable diagnosis that builds a high-quality diagnostic knowledge base through a record-driven explanation learning paradigm.
Outcome: The proposed framework outperforms baselines on the DiReCT and JAMA benchmarks and improves the explanation completeness metric from 64.5% to 76.9% over the best existing methods.
Empowering GUI Agents via Autonomous Experience Exploration and Hindsight Experience Utilization for Task Planning (2026.acl-long)

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Challenge: Multimodal web agents are cost-efficient and privacy-preserving, but suffer from weak planning and limited cross-website generalization.
Approach: They propose a method which autonomously explores environments to discover experiences and utilizes hindsight experience to synthesize strictly aligned, high-level training data.
Outcome: The proposed method outperforms Qwen2.5-VL-32B model on real-world benchmarks and demonstrates that mastering low-level atomic skills does not guarantee high-level planning competence.
Knowledge Guided Metric Learning for Few-Shot Text Classification (2021.naacl-main)

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Challenge: Existing methods to learn from limited examples are insufficient for many-shot text classification tasks.
Approach: They propose to introduce external knowledge into few-shot learning to imitate human knowledge by creating a parameter generator network that generates different metrics for different tasks.
Outcome: The proposed method outperforms the SoTA few-shot text classification models.
InstructoR: Instructing Unsupervised Conversational Dense Retrieval with Large Language Models (2023.findings-emnlp)

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Challenge: Existing methods for conversational retrieval only fine-tune on limited supervised data, making it difficult for the retriever to fully grasp the entire conversation.
Approach: They propose a method to instruct unsupervised conversational dense retrieval with large language models (LLMs) they use supervised data to discover the user's query intent from the conversation context .
Outcome: The proposed method can bring significant improvements across various ad-hoc retrievers, surpassing the current state-of-the-art method.
Alignment Precedes Fusion: Open-Vocabulary Named Entity Recognition as Context-Type Semantic Matching (2023.findings-emnlp)

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Challenge: Continual learning and zero-shot learning approaches have not been adopted to scale to novel-emerging types.
Approach: They propose a method to recognize entities in novel types by their textual names or descriptions.
Outcome: The proposed method outperforms the state-of-the-art methods on three challenging OVNER benchmarks by 9.7%, 9.5%, and 1.8% F1-score of novel types.
ShieldHead: Decoding-time Safeguard for Large Language Models (2025.findings-acl)

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Challenge: Recent advances in LLM-based moderation methods have demonstrated remarkable promise in identifying safety risks associated with both inputs and outputs in human-AI interactions.
Approach: They propose to learn a classification head on the last-layer hidden states of a dialogue model and use it to detect harmful content.
Outcome: The proposed framework is 300 faster (**1ms**) than previous LLM-based moderation models with 99% less parameters than LlamaGuard.
Cracking Factual Knowledge: A Comprehensive Analysis of Degenerate Knowledge Neurons in Large Language Models (2025.acl-long)

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Challenge: Large language models (LLMs) are believed to store extensive factual knowledge, yet the mechanisms of knowledge storage in LLMs remain largely unexplored.
Approach: They propose that some multi-layer perceptron neurons can store "knowledge".
Outcome: The proposed model can store "knowledge" in multi-layer perceptron neurons, but not redundancy.
Revealing the Deceptiveness of Knowledge Editing: A Mechanistic Analysis of Superficial Editing (2025.acl-long)

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Challenge: Existing knowledge editing algorithms are prone to generating original knowledge . despite the fact that many models achieve near-perfect performance, superficial editing remains a challenge .
Approach: They propose to use "**superficial editing**" to describe the phenomenon . they investigate the internal mechanisms of the attention module and their corresponding left singular vectors .
Outcome: The proposed method can modify specific knowledge in a pretrained large language model while ensuring that unrelated knowledge remains unaffected.
Q-PRM: Adaptive Query Rewriting for Retrieval-Augmented Generation via Step-level Process Supervision (2025.findings-emnlp)

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Challenge: Existing approaches to rewriting queries often lack supervision signals for intermediate steps . existing approaches rely on outcome-supervised training or heuristic rules to guide the rewrite process .
Approach: They propose a query rewriting framework that generates process-level supervision signals for intermediate steps.
Outcome: a new query rewriting framework outperforms existing approaches on open-domain QA benchmarks.
Explicitly Capturing Relations between Entity Mentions via Graph Neural Networks for Domain-specific Named Entity Recognition (2021.acl-short)

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Challenge: Named entity recognition (NER) is well studied for the general domain, but the performance is still moderate for specialized domains.
Approach: They propose to explicitly connect entity mentions based on global coreference relations and local dependency relations to build better entity mention representations.
Outcome: The proposed system improves the NER performance even with a tiny amount of labeled data.
QualiSpeech: A Speech Quality Assessment Dataset with Natural Language Reasoning and Descriptions (2025.acl-long)

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Challenge: Existing datasets lack comprehensive annotations for speech quality assessment . existing methods lack detailed annotations, resulting in inaccurate evaluations.
Approach: They propose a low-level speech quality assessment dataset incorporating natural language descriptions and a Benchmark to evaluate low- level speech understanding capabilities of auditory large language models.
Outcome: The proposed model can be used to evaluate the low-level speech understanding capabilities of auditory large language models.
CBLUE: A Chinese Biomedical Language Understanding Evaluation Benchmark (2022.acl-long)

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Challenge: a new benchmark for biomedical language understanding is being developed in Chinese . most benchmarks are limited to English, which makes it difficult to replicate success in other languages.
Approach: They propose to use Chinese biomedical language understanding evaluation benchmarks to evaluate Chinese models.
Outcome: The proposed benchmarks show that the current models perform worse than the human ceiling.
Rethinking Zero-shot Neural Machine Translation: From a Perspective of Latent Variables (2021.findings-emnlp)

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Challenge: Existing methods to achieve zero-shot translation suffer from spurious correlations between output language and language invariant semantics.
Approach: They propose a method that denoizes the autoencoder objective based on pivot language into traditional training objective to improve translation accuracy on zero-shot directions.
Outcome: The proposed method eliminates spurious correlations and outperforms state-of-the-art methods on two benchmark machine translation datasets.
A Good Neighbor, A Found Treasure: Mining Treasured Neighbors for Knowledge Graph Entity Typing (2022.emnlp-main)

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Challenge: Existing methods to infer missing types for knowledge graphs only leverage one-hop neighbor information of the central entity, ignoring multi-hop neighbors that can provide valuable clues for inference.
Approach: They propose a method to infer missing types for knowledge graph entities by using neighbor information and co-occurrence relations between types.
Outcome: The proposed method significantly outperforms existing state-of-the-art methods on two widely used datasets.
Improving Event Causality Identification via Self-Supervised Representation Learning on External Causal Statement (2021.findings-acl)

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Challenge: Existing methods for event causality identification (ECI) rely on labeled data, but the scale of annotated datasets is limited.
Approach: They propose a self-supervised framework to learn context-specific causal patterns from external causal statements and adopt a contrastive transfer strategy to incorporate the learned context- specific causal patterns into the target ECI model.
Outcome: The proposed method significantly outperforms existing methods on EventSto-ryLine and Causal-TimeBank (+2.0 and +3.4 points on F1 value respectively).
AgentsCourt: Building Judicial Decision-Making Agents with Court Debate Simulation and Legal Knowledge Augmentation (2024.findings-emnlp)

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Challenge: Recent advances in deep learning have significantly impacted the legal domain.
Approach: They propose a multi-agent framework for judicial decision-making that simulates the court trial process . they propose 420 Chinese judgment documents to support their framework and build a large-scale legal knowledge base .
Outcome: The proposed framework outperforms existing methods in various aspects, especially in generating legal articles.
M2Edit: Locate and Edit Multi-Granularity Knowledge in Multimodal Large Language Model (2025.emnlp-main)

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Challenge: Existing knowledge editing methods for MLLMs lack multi-granularity knowledge . existing knowledge editing approaches lack multimodality knowledge and generalize to multimodal data.
Approach: They propose a multimodal knowledge editing method which integrates key knowledge layers within MLLMs and collaboratively edits them.
Outcome: The proposed method improves visual generality performance on knowledge data of different granularities.
Conjoin after Decompose: Improving Few-Shot Performance of Named Entity Recognition (2024.lrec-main)

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Challenge: Existing prompt-based NER models fail to detect entity boundaries, causing performance degradation.
Approach: They propose a model which consists of a BART encoder and a parabiotic decoder and propose ' boundary expansion strategy' to enhance the model's capability in entity type classification.
Outcome: The proposed model can achieve significant performance gains over state-of-the-art models.
LLMs Can Also Do Well! Breaking Barriers in Semantic Role Labeling via Large Language Models (2025.findings-acl)

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Challenge: Semantic role labeling (SRL) is a crucial task of natural language processing (NLP).
Approach: They propose to equip LLMs with retrieval-augmented generation and self-correction mechanisms to enable SRL to perform better in Chinese and English.
Outcome: The proposed method achieves state-of-the-art in Chinese and English on three widely-used benchmarks.
From Recognition to Reasoning: Benchmarking and Enhancing MLLMs on Real-World Receipt Document Understanding (2026.acl-long)

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Challenge: Existing models for visual information extraction suffer from limitations in scale and realism . ReceiptBench is a large-scale, human-annotated benchmark for receipts .
Approach: They propose a large-scale, human-annotated benchmark for visual information extraction . the method organizes information extraction into four hierarchical sub-tasks .
Outcome: The proposed method surpasses proprietary models on complex reasoning tasks.
RevPRAG: Revealing Poisoning Attacks in Retrieval-Augmented Generation through LLM Activation Analysis (2025.findings-emnlp)

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Challenge: Retrieval-Augmented Generation (RAG) enriches the input to LLMs by retrieving information from the relevant knowledge database.
Approach: They propose to use a knowledge database to enrich the input of LLMs by retrieving information from the relevant knowledge database.
Outcome: The proposed approach can achieve 98% true positive rate while maintaining a false positive rate close to 1%.
LANTERN in the Event Stream: Training-Free Temporal Knowledge Graph Forecasting by Balancing Inertia and Shifts (2026.findings-acl)

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Challenge: Temporal knowledge graph forecasting (TKGF) uses long-window strengthscores and short-windowed novelty scores to predict missing entities in future queries.
Approach: They propose a training-freeprompting framework that uses two perspectives of history to predict missing entities in future queries.
Outcome: The proposed framework outperforms the state-of-the-art baselineAnRe framework in ICEWS14, ICEW05-15, and GDELT.
What Factors Influence LLMs’ Judgments? A Case Study on Question Answering (2024.lrec-main)

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Challenge: Existing studies indicate that Large Language Models perform at a level comparable to humans with advantages of speed and cost-effectiveness in different fields.
Approach: They propose to introduce four unexplored factors and a new dimension of question difficulty to provide a more comprehensive understanding of LLMs’ judgments across varying question intricacies.
Outcome: The proposed dimensions of question difficulty and answer quantity provide valuable insights into optimizing LLMs’ performance as judges.
NutFrame: Frame-based Conceptual Structure Induction with LLMs (2024.lrec-main)

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Challenge: Existing studies focus on syntactic knowledge and world knowledge, but conceptual structure is not well-understood.
Approach: They propose a benchmark for coNceptual structure induction based on FrameNet . they use prompts to induce conceptual structure of Framenet with LLMs .
Outcome: The proposed model is able to induce conceptual structure of FrameNet with LLMs.
Adversarial Transfer Learning for Chinese Named Entity Recognition with Self-Attention Mechanism (D18-1)

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Challenge: Existing methods for named entity recognition (NER) do not exploit word boundary information from CWS or cannot filter the specific information of CWS.
Approach: They propose to exploit task-shared boundary information to make full use of Chinese NER task and Chinese word segmentation (CWS) .
Outcome: The proposed model significantly outperforms other state-of-the-art methods on two widely used datasets.
Neural Cross-Lingual Event Detection with Minimal Parallel Resources (D19-1)

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Challenge: Existing methods for event detection (ED) rely on high-performance machine translation systems or manually aligned documents to achieve a decent performance.
Approach: They propose a method that uses context-dependent translation to construct a lexical mapping between different languages and a shared syntactic order event detector for multilingual co-training.
Outcome: The proposed method performs cross-lingual transfer and tackles the extremely annotation-poor scenario.
See the Forest for the Trees: Loosely Speculative Decoding via Visual-Semantic Guidance for Efficient Inference of Video LLMs (2026.acl-long)

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Challenge: Existing methods for video understanding suffer from autoregressive generation of tokens.
Approach: They propose a training-free loosely SD framework for Video-LLMs that uses visual-relevant tokens to accurately pinpoint the latter.
Outcome: The proposed framework boosts the accepted length and speedup ratio by 136% and 35% compared to SOTA training-free SD methods for Video-LLMs.
HTCCN: Temporal Causal Convolutional Networks with Hawkes Process for Extrapolation Reasoning in Temporal Knowledge Graphs (2024.naacl-long)

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Challenge: Temporal knowledge graphs (TKGs) are powerful tools for storing and modeling dynamic facts.
Approach: They propose a Hawkes process-based temporal causal convolutional network for temporal reasoning under extrapolation settings.
Outcome: The proposed network is based on Hawkes process-based temporal causal convolutional network and captures the temporal evolution of facts.
Evaluating Personalized Tool-Augmented LLMs from the Perspectives of Personalization and Proactivity (2025.acl-long)

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Challenge: Personalized tool utilization is essential for aligning large language models (LLMs) with user preference in interaction scenarios with various tools.
Approach: They propose a key-point-based LLM evaluation method that mitigates biases by manually annotating key points for each test case and providing them to LLM as the reference.
Outcome: The proposed method mitigates biases in the LLM-as-a-judge system by manually annotating key points for each test case and providing them to LLM as the reference.
Search-in-Context: Efficient Multi-Hop QA over Long Contexts via Monte Carlo Tree Search with Dynamic KV Retrieval (2025.findings-acl)

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Challenge: Existing approaches to multihop question answering (MHQA) over long contexts are often neglecting explicit reasoning or incurring expensive computational costs due to full-attention mechanisms over long contextuals.
Approach: They propose a framework that integrates Monte Carlo Tree Search (MCTS) with dynamic key-value retrieval to enable iterative, context-aware reasoning.
Outcome: The proposed framework integrates Monte Carlo Tree Search (MCTS) with dynamic key-value (KV) retrieval to enable iterative, context-aware reasoning.
Structured Optimal Brain Pruning for Large Language Models (2024.emnlp-main)

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Challenge: Existing pruning methods for Large Language Models rely on unstructured pruning or require special hardware to accelerate computation.
Approach: They propose a retraining-free structured pruning method called SoBP . they evaluate the effectiveness of SoBP across 14 models from 3 LLM families .
Outcome: The proposed method outperforms current state-of-the-art pruning methods on 8 datasets.
DEBUG: A Dense Bottom-Up Grounding Approach for Natural Language Video Localization (D19-1)

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Challenge: Existing models for natural language video localization are top-down and bottom-up . however, both approaches suffer several limitations, leading to performance degradation .
Approach: They propose a top-down approach for localizing a natural language description in a video sequence . they propose 'DEnse Bottom-Up Grounding' which uses the temporal boundaries of each video frame .
Outcome: The proposed framework matches the speed of top-down models while surpassing the state-of-the-art models.
Leros: Learning Explicit Reasoning on Synthesized Data for Commonsense Question Answering (2024.lrec-main)

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Challenge: Recent work shows large language models can generate useful rationales for commonsense question answering (CQA) however, the cost of deployment and further tuning is relatively expensive for the large models.
Approach: They propose a framework that leverages both knowledge graphs and large language models to synthesize rationale-augmented CQA data.
Outcome: The proposed model can generate useful rationales on unseen CQA benchmarks.
MathFlow: Enhancing the Perceptual Flow of MLLMs for Visual Mathematical Problems (2026.acl-long)

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Challenge: Existing multimodal large language models (MLLMs) exhibit significant limitations when extracting essential information and reasoned properties from diagrams and performing complex reasoning based on these visual inputs.
Approach: They propose a benchmark that provides a fine-grained evaluation of MLLMs’ perception and reasoning capabilities.
Outcome: The proposed benchmark shows that existing MLLMs exhibit limitations when extracting essential information and reasoned properties from diagrams and performing complex reasoning based on these visual inputs.
CogAtom: From Cognitive Atoms to Olympiad-level Mathematical Reasoning in Large Language Models (2025.findings-emnlp)

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Challenge: Existing methods for generating high-quality, multi-step reasoning are limited . we present a new framework for synthesising rigorous, cognitively diverse problems .
Approach: They propose a cognitive atom-based framework for synthesizing mathematically rigorous problems.
Outcome: The proposed framework outperforms existing methods in accuracy, reasoning depth and diversity while exceeding the difficulty of AIME.
Non-Parametric Unsupervised Domain Adaptation for Neural Machine Translation (2021.findings-emnlp)

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Challenge: kNN-MT is a non-parametric method that uses nearest neighbor retrieval to translate out-of-domain sentences, rare words, etc.
Approach: They propose a framework that directly uses in-domain monolingual sentences to build an effective datastore for k-nearest-neighbor retrieval.
Outcome: The proposed framework improves translation accuracy with target-side monolingual data while achieving comparable performance with back-translation.
The Knowledge Microscope: Features as Better Analytical Lenses than Neurons (2025.acl-long)

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Challenge: Recent studies have shown that features are superior analytical units for understanding factual knowledge in Language Models.
Approach: They propose a feature-based editing method that decomposes neurons into features rather than neurons to understand the mechanisms of factual knowledge in Language Models.
Outcome: The proposed method demonstrates superior performance over neuron-based approaches in erasing privacy-sensitive information from LMs.

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