Papers by Zhao Song

127 papers
Data Manipulation: Towards Effective Instance Learning for Neural Dialogue Generation via Learning to Augment and Reweight (2020.acl-main)

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Challenge: Current state-of-the-art neural dialogue models learn from human conversations . however, due to the open-ended nature of human conversations, the quality of training data varies .
Approach: They propose a data manipulation framework to augment and highlight effective training samples . they also propose to increase its manipulation skills through gradient descent with validation samples a reshaping framework to proactively restructure the data distribution towards reliable samples is also proposed .
Outcome: The proposed framework improves the performance of open-domain neural dialogue models with respect to evaluation metrics and human judgments.
Dual Prompt Tuning based Contrastive Learning for Hierarchical Text Classification (2024.findings-acl)

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Challenge: Existing methods focus on hierarchy-aware text feature by exploiting explicit parent-child relationships, resulting in label confusion within each layer.
Approach: They propose a dual-prompt tuning method which emphasizes discrimination among peer labels by performing contrastive learning on each hierarchical layer.
Outcome: The proposed method outperforms existing methods on benchmark datasets and is available on github.
F2TEval: Human-Aligned Multi-Dimensional Evaluation for Figure-to-Text Task (2025.emnlp-main)

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Challenge: Existing evaluation methods for Figure-to-Text tasks are limited due to the inherent ambiguity and semantic compression of figures, the generated texts suffer from factual inaccuracies, incomplete coverage, and weak logical reasoning.
Approach: They propose a five-dimensional reference-free evaluation method aligned with expert criteria to support fine-grained evaluation.
Outcome: The proposed method outperforms Gemini-2.0 and Claude-3.5 with only 0.9B parameters.
Low-Resource Comparative Opinion Quintuple Extraction by Data Augmentation with Prompting (2023.findings-emnlp)

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Challenge: Comparative Opinion Quintuple Extraction (COQE) aims to predict comparative opinion quintuples from comparative sentences.
Approach: They propose a low-resource approach to extract comparative opinion quintuples from comparative sentences . they propose augmentation using ChatGPT and a data-centric approach .
Outcome: The proposed approach improves the existing pipeline-based method and achieves state-of-the-art results.
Unified Thinker: A General Reasoning Core for Image Generation (2026.acl-long)

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Challenge: generative models struggle with logic-intensive instruction following, exposing a persistent reasoning–execution gap.
Approach: They propose a task-agnostic reasoning architecture for general image generation . they propose pixel-level feedback to ground the Thinker's policy in pixel feedback .
Outcome: The proposed system significantly improves image reasoning and generation quality.
GAP-Gen: Guided Automatic Python Code Generation (2023.eacl-srw)

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Challenge: Several previous approaches convert a sentence into a formal statement by mapping verbs to functions in the formal language.
Approach: They propose a Guided Automatic Python Code Generation method based on Python syntactic constraints and semantic constraints.
Outcome: The proposed method achieves better results on automatic Python code generation task than previous methods.
When Correct Beliefs Collapse: Epistemic Resilience of LLMs under Clinical Pressure (2026.acl-long)

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Challenge: Existing models exhibit severe multi-turn sycophancy in clinical dialogue . high initial diagnostic capability does not imply high belief stability .
Approach: They propose a stress test framework that evaluates belief stability under escalating pressure.
Outcome: The proposed stress test framework reduces the risk of multi-turn sycophancy in clinical dialogue . it eliminates belief change and improves robustness in training time .
hyperdoc2vec: Distributed Representations of Hypertext Documents (P18-1)

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Challenge: Conventional text embedding methods suffer from information loss if directly adapted to hyper-documents.
Approach: They propose an embedding approach for hyper-documents that incorporates four criteria to preserve necessary information for embeddable models.
Outcome: The proposed model outperforms several existing models on two tasks in the academic domain.
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.
AgentBank: Towards Generalized LLM Agents via Fine-Tuning on 50000+ Interaction Trajectories (2024.findings-emnlp)

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Challenge: Existing studies focus on specialized agents designed for particular tasks.
Approach: They propose to scale annotated interaction trajectories and fine-tune LLMs on AgentBank to get a series of agent models, Samoyed.
Outcome: The proposed model can scale to get generalized agent capabilities.
Beyond Polarity: Continuous Affect-Enhanced Multimodal Aspect-Based Sentiment Classification (2026.findings-acl)

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Challenge: Existing methods for multimodal aspect-based sentiment classification exploit discrete polarity patterns and generic visual embeddings.
Approach: They propose a Valence–Arousal–Dominance(VAD)-Enhanced MABSC framework that integrates VAD signals into multimodal sentiment reasoning and learns emotion-sensitive image representations.
Outcome: The proposed framework brings VAD signals into multimodal sentiment reasoning and learns emotion-sensitive image representations.
Make Imagination Clearer! Stable Diffusion-based Visual Imagination for Multimodal Machine Translation (2025.acl-long)

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Challenge: Experimental results show that our model significantly outperforms existing multimodal MT and text-only MT.
Approach: They propose a stable diffusion-based imagination network into a multimodal large language model to generate an image for each source sentence.
Outcome: The proposed model outperforms existing multimodal and text-only MT and achieves an average improvement of 14 BLEU points on Multi30K and MSCOCO multimodal MT benchmarks.
TexSmart: A System for Enhanced Natural Language Understanding (2021.acl-demo)

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Challenge: TexSmart supports fine-grained named entity recognition (NER) Large-scale fine-granular entity types are expected to provide richer semantic information for downstream NLP applications.
Approach: They introduce TexSmart, a text understanding system that supports fine-grained named entity recognition (NER) and enhanced semantic analysis functionalities.
Outcome: The proposed system supports fine-grained named entity recognition (NER) and enhanced semantic analysis functions.
Generating Long and Informative Reviews with Aspect-Aware Coarse-to-Fine Decoding (P19-1)

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Challenge: Existing methods for review generation lack topical and syntactic characteristics of natural languages.
Approach: They propose a review generation model that uses aspect semantics, syntactic sketch, and context information to generate a sentence and corresponding words.
Outcome: The proposed model can generate long and informative review text for users given a product and her/his rating on it.
F2RL: Factuality and Faithfulness Reinforcement Learning Framework for Claim-Guided Evidence-Supported Counterspeech Generation (2024.emnlp-main)

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Challenge: Existing methods for generating evidence-supported counterspeech lack clear guidance with a core claim for organizing evidence.
Approach: They propose a Factuality and Faithfulness Reinforcement Learning framework for generating claim-guided and evidence-supported counterspeech (F2RL) they generate counter-claims based on hate speech and design a self-evaluation mechanism to select the most appropriate one.
Outcome: The proposed framework achieves excellent performance on three benchmark datasets with strong factuality and faithfulness.
CriticSearch: Fine-Grained Credit Assignment for Search Agents via a Retrospective Critic (2026.findings-acl)

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Challenge: Existing search agent pipelines rely on sparse outcome rewards, leading to inefficient exploration and unstable training.
Approach: They propose a tool-integrated reasoning framework that provides turn-level feedback via a retrospective critic mechanism.
Outcome: The proposed framework outperforms baselines in multi-hop reasoning benchmarks and achieves faster convergence and training stability.
Iterative Document Representation Learning Towards Summarization with Polishing (D18-1)

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Challenge: Existing summarization methods read through document only once to generate a document representation, resulting in a sub-optimal representation.
Approach: They propose an iterative model for supervised extractive text summarization which polishes the document representation on many passes through the document.
Outcome: The proposed model outperforms state-of-the-art extractive systems on CNN/DailyMail and DUC2002 datasets.
A Survey of Reasoning-Intensive Retrieval: Progress and Challenges (2026.acl-long)

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Challenge: Reasoning-Intensive Retrieval (RIR) targets retrieval settings where relevance is mediated by latent inferential links between a query and supporting evidence, rather than semantic similarity.
Approach: They propose a taxonomy that categorizes methods based on where and how reasoning is integrated into the retrieval pipeline.
Outcome: The proposed method framework provides a detailed analysis of the current landscape and its trade-offs and practical applications.
RAG-Star: Enhancing Deliberative Reasoning with Retrieval Augmented Verification and Refinement (2025.naacl-long)

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Challenge: Existing large language models (LLMs) show exceptional problem-solving capabilities but struggle with complex reasoning tasks.
Approach: They propose a novel RAG approach that integrates retrieved information to guide tree-based reasoning process based on LLMs.
Outcome: The proposed approach outperforms existing methods in large language models . iteratively plans intermediate sub-queries and answers based on the LLM itself .
MCIL: Multimodal Counterfactual Instance Learning for Low-resource Entity-based Multimodal Information Extraction (2024.lrec-main)

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Challenge: Existing methods to perform multimodal information extraction only investigated entity-based tasks under supervised learning with adequate labeled data.
Approach: They propose to investigate the entity-based MIE tasks under the low-resource settings by decomposing the features into image, entity, and context factors.
Outcome: The proposed method is able to perform on two public MIE benchmark datasets and the experimental results confirm it.
Rethinking Composed Image Retrieval Evaluation: A Fine-Grained Benchmark from Image Editing (2026.acl-long)

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Challenge: Composed Image Retrieval (CIR) is a complex task in multimodal understanding . current CIR benchmarks lack a robust evaluation pipeline and limited query categories .
Approach: They construct a fine-grained CIR benchmark that allows for precise control over modification types and content.
Outcome: The proposed benchmark covers 5,000 high-quality queries structured across five main categories and fifteen subcategories.
Group-wise Contrastive Learning for Neural Dialogue Generation (2020.findings-emnlp)

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Challenge: Existing approaches to training dialogue models have low diversity in open-domain contexts . prior art suggests that naive MLE objective is not effective enough .
Approach: They propose to incorporate contrastive learning into dialogue generation by using a pretrained baseline model as a reference.
Outcome: The proposed framework is suited for training a wide range of dialogue generation models with favorable performance over baseline training approaches.
CMoralEval: A Moral Evaluation Benchmark for Chinese Large Language Models (2024.findings-acl)

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Challenge: Recent years have witnessed remarkable progress achieved by large language models in both natural language understanding and generation.
Approach: They propose a large benchmark CMoralEval for moral evaluation of Chinese LLMs . they use a Chinese TV program discussing Chinese moral norms and Chinese moral anomies based on various sources .
Outcome: The proposed dataset is characterized by diversity and authenticity.
Not All Languages Are Created Equal in LLMs: Improving Multilingual Capability by Cross-Lingual-Thought Prompting (2023.findings-emnlp)

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Challenge: Large language models (LLMs) demonstrate impressive multilingual capability, but their performance varies substantially across different languages.
Approach: They propose a generic template prompt that stimulates cross-lingual and logical reasoning skills to enhance task performance across languages.
Outcome: The proposed method improves multilingual capability across languages and covers high-resource and low-resourced languages.
PM2F2N: Patient Multi-view Multi-modal Feature Fusion Networks for Clinical Outcome Prediction (2022.findings-emnlp)

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Challenge: Existing methods focused on time series data but ignored clinical notes . fusion of multi-modal features of patients from different views is not feasible due to the time series and clinical notes data being stored as time series.
Approach: They propose to combine time series and clinical notes to fuse multi-modal features of patients from different perspectives using graph neural networks.
Outcome: The proposed method is superior to existing models on MIMIC-III benchmark.
Efficiency-Effectiveness Reranking FLOPs for LLM-based Rerankers (2025.emnlp-industry)

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Challenge: Existing studies evaluate the efficiency of LLM-based rerankers using proxy metrics such as latency and the number of forward passes.
Approach: They propose to use a large language model to evaluate the efficiency of LLM-based rerankers . they propose to measure ranking quality and query processing efficiency using an interpretable FLOPs estimator .
Outcome: The proposed metrics evaluate LLM-based rerankers with different architectures without running any experiments.
Structure-Infused Copy Mechanisms for Abstractive Summarization (C18-1)

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Challenge: Experimental results show that system summaries struggle to preserve syntactic meaning of source texts.
Approach: They propose to incorporate syntactic information from source sentences into abstractive summaries by structure-infused copy mechanisms.
Outcome: The proposed approach compares favorably to state-of-the-art methods.
KG-Agent: An Efficient Autonomous Agent Framework for Complex Reasoning over Knowledge Graph (2025.acl-long)

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Challenge: Existing methods to design the interaction strategy between large language models and knowledge graphs (KGs) are not effective for large language model (LLM)s to solve complex tasks due to the large volume and structured format of KG data.
Approach: They propose an LLM-based agent framework that enables small LLMs to actively make decisions over knowledge graphs.
Outcome: The proposed framework outperforms existing methods on in-domain and out-domain datasets using 10K samples.
Metacognitive Self-Correction for Multi-Agent System via Prototype-Guided Next-Execution Reconstruction (2026.findings-acl)

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Challenge: Large Language Model based multi-agent systems (MAS) excel at collaborative problem solving but remain brittle to cascading errors.
Approach: They propose a metacognitive framework that enables step-level error detection and self-correction in Large Language Model based multi-agent systems (MAS) .
Outcome: The proposed framework outperforms baselines on the Who When benchmark and delivers consistent gains on AgentErrorBench.
A Survey of RAG-Reasoning Systems in Large Language Models (2025.findings-emnlp)

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Challenge: a survey of RAG-based reasoning-based approaches shows that it is not effective for multi-step inferences.
Approach: They map how advanced reasoning optimizes each stage of RAG . they show how retrieved knowledge supply missing premises and expand context for complex inference .
Outcome: The proposed frameworks achieve state-of-the-art across knowledge-intensive benchmarks.
Circuit Complexity Bounds for RoPE-based Transformer Architecture (2025.emnlp-main)

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Challenge: Recent studies provide the circuit complexity bounds to Transformer-like architectures. position embedding has emerged as a crucial technique in modern large language models.
Approach: They propose to use position embedding to improve Transformer-like architectures by analyzing their circuits and analyzing the results.
Outcome: The proposed model is able to solve canonical tasks without embedding positional information.
Weakly Supervised Text Classification using Supervision Signals from a Language Model (2022.findings-naacl)

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Challenge: Existing weakly supervised text classification methods require a large number of annotated data and human annotations are expensive.
Approach: They propose to query a masked language model with cloze style prompts to obtain supervision signals.
Outcome: The proposed method outperforms baseline methods on three datasets by 2%, 4%, and 3%.
MIND: From Passive Mimicry to Active Reasoning through Capability-Aware Multi-Perspective CoT Distillation (2026.acl-long)

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Challenge: Existing approaches restrict students to following a single golden rationale and treat different reasoning paths independently, causing suboptimal performance.
Approach: They propose a capability-adaptive framework that transitions distillation from passive mimicry to active cognitive construction and employ a feedback-driven inertia calibration mechanism to align supervision with the student’s current adaptability.
Outcome: Experiments show that the proposed framework achieves state-of-the-art performance on both in-distribution and out-of distribution benchmarks.
Improving Meta-learning for Low-resource Text Classification and Generation via Memory Imitation (2022.acl-long)

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Challenge: Building models of natural language processing (NLP) is challenging in low-resource scenarios where limited data are available.
Approach: They propose a memory imitation meta-learning method that enhances the model’s reliance on support sets for task adaptation.
Outcome: The proposed method outperforms baselines on both text classification and generation tasks.
AOT*: Efficient Synthesis Planning via LLM-Empowered AND-OR Tree Search (2026.findings-acl)

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Challenge: Experimental evaluation shows that AOT* achieves competitive solve rates using 3-5 fewer iterations than existing LLM-based approaches.
Approach: They propose a framework that integrates LLM-generated chemical synthesis pathways with systematic AND-OR tree search.
Outcome: Experimental results show that AOT* improves search efficiency and solves faster than existing approaches.
NarraSum: A Large-Scale Dataset for Abstractive Narrative Summarization (2022.findings-emnlp)

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Challenge: Existing studies focus on summarizing news documents or structured documents.
Approach: They propose to use a large-scale narrative summarization dataset to encourage research . they find there is a performance gap between humans and the models on NarraSum .
Outcome: The proposed dataset shows that humans and state-of-the-art models perform poorly when summarizing a narrative . it contains 122K narratives collected from synopses of movies and TV episodes with diverse genres .
VQA-Augmented Machine Translation with Cross-Modal Contrastive Learning (2025.findings-emnlp)

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Challenge: Existing multimodal machine translation methods often extract visual features using pre-trained models while learning text features from scratch, leading to representation imbalance.
Approach: They propose a cross-modal VQA-augmented multimodal machine translation method . it aligns image-source text pairs and image-question text pairs through dual-text contrastive learning .
Outcome: The proposed method outperforms state-of-the-art methods on multiple evaluation metrics.
ShopSimulator: Evaluating and Exploring RL-Driven LLM Agent for Shopping Assistants (2026.acl-long)

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Challenge: Existing studies on large language model-based agents focus on evaluation benchmarks without training support.
Approach: They propose a large-scale Chinese shopping simulation environment that uses large language models to train agents.
Outcome: The proposed model performs poorly in a large-scale and challenging shopping environment in China.
From Hypothesis to Publication: A Comprehensive Survey of AI-Driven Research Support Systems (2025.findings-emnlp)

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Challenge: rapid development of artificial intelligence (AI) technologies has inspired researchers to explore how AI can accelerate and enhance research.
Approach: They organize the relevant studies into three main categories: hypothesis formulation, hypothesis validation, and manuscript publication.
Outcome: The authors summarize the current state of research in three main areas: hypothesis formulation, hypothesis validation, and manuscript publication.
RPC-Bench: A Fine-grained Benchmark for Research Paper Comprehension (2026.acl-long)

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Challenge: Existing benchmarks for understanding research papers offer limited fine-grained evaluation at scale.
Approach: They propose a large-scale question-answering benchmark built from review–rebuttal exchanges of high-quality computer science papers.
Outcome: The proposed model is based on human-verified QA pairs and contains 15K questions.
MixTEA: Semi-supervised Entity Alignment with Mixture Teaching (2023.findings-emnlp)

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Challenge: Existing methods to learn informative entity embeddings are insufficient for semi-supervised entity alignment.
Approach: They propose a semi-supervised method which guides the model learning with an end-to-end mixture teaching of manually labeled mappings and probabilistic pseudo mappings.
Outcome: The proposed method is superior to existing methods on benchmark datasets and further analyses.
ITAKE: Interactive Unstructured Text Annotation and Knowledge Extraction System with LLMs and ModelOps (2024.acl-demos)

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Challenge: Unstructured text data contains a large amount of valuable knowledge, but there are many tools that do not meet the needs of actual business.
Approach: They propose an unstructured text annotation and knowledge extraction system that integrates Large Language Models and ModelOps to improve model supervision and performance.
Outcome: The proposed system integrates large language models and ModelOps to improve performance in low-resource contexts.
Locally Differentially Private In-Context Learning (2024.lrec-main)

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Challenge: Large pretrained language models (LLMs) have shown surprising In-Context Learning ability.
Approach: They propose a locally differentially private framework of in-context learning for LLMs that can be augmented with a private database for some specific task.
Outcome: The proposed framework can predict labels without additional parameter modifications without input-label pairs .
Model Surgery: Modulating LLM’s Behavior Via Simple Parameter Editing (2025.naacl-long)

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Challenge: Current approaches for detoxification or preventing jailbreaking involve fine-tuning billions of parameters through gradient descent with substantial computational cost.
Approach: They propose to use supervised fine-tuning and Reinforcement Learning from human feedback to modify LLMs' behavior by directly editing a small subset of parameters.
Outcome: Experiments show that editing a small subset of parameters can modulate specific behaviors of LLMs, such as detoxification and resistance to jailbreak, with only inference-level computational resources.
Hallucinations as Orthogonal Noise: Inference-Time Manifold Alignment via Dynamic Contextual Orthogonalization (2026.findings-acl)

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Challenge: Hallucinations in Large Language Models persist in critical domains where generated content diverges from contextual facts or logical constraints.
Approach: They propose to generate hallucinations as orthogonal noise relative to the semantic manifold of the residual stream.
Outcome: The proposed method achieves superior contextual faithfulness compared to state-of-the-art methods.
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.
LSDC: An Efficient and Effective Large-Scale Data Compression Method for Supervised Fine-tuning of Large Language Models (2025.findings-naacl)

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Challenge: Large Language Models (LLMs) are expanding in scale and size, increasing computational costs . large-scale data compression techniques can reduce the size of training datasets while maintaining data integrity.
Approach: They propose a large-scale data compression method to reduce the size of training data . they use a bifurcated quantization strategy to maximize the diversity of samples .
Outcome: The proposed method significantly reduces the size of training data while maximizing the submodular gain.
Awakening Dormant Experts:Counterfactual Routing to Mitigate MoE Hallucinations (2026.acl-long)

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Challenge: Sparse Mixture-of-Experts models are vulnerable to hallucinations, authors say . static Top-k routing leaves "specialist experts" under-prioritized for specific tokens .
Approach: They propose a training-free inference framework to awaken dormant experts . they propose 'counterfactual routing' to shift computational resources from syntax-dominant to knowledge-intensive layers .
Outcome: Experiments show that CoR improves factual accuracy by 3.1% without increasing the inference budget.
PLAWBENCH: A Rubric-Based Benchmark for Evaluating LLMs in Real-World Legal Practice (2026.acl-long)

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Challenge: Existing benchmarks for large language models (LLMs) are coarse, single-dimensional metrics and do not explicitly assess fine-grained legal reasoning.
Approach: They propose a Practical Law Benchmark to evaluate large language models in real-world legal practice scenarios.
Outcome: The proposed model is based on 850 questions and 13 scenarios with expert-designed evaluation rubrics.
Sentiment Word Aware Multimodal Refinement for Multimodal Sentiment Analysis with ASR Errors (2022.findings-acl)

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Challenge: Existing models for multimodal sentiment analysis are limited in their capacity to be deployed in the real world.
Approach: They propose a model that can dynamically refine erroneous sentiment words by leveraging multimodal sentiment clues.
Outcome: The proposed model surpasses the state-of-the-art models on three datasets.
WinoWhy: A Deep Diagnosis of Essential Commonsense Knowledge for Answering Winograd Schema Challenge (2020.acl-main)

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Challenge: a new task is developed to categorize essential commonsense knowledge for the Winograd Schema Challenge . a previous work focused on the classification of commonsensical knowledge by pre-trained models .
Approach: They propose a task that categorizes essential commonsense knowledge for the Winograd Schema Challenge . they leverage the collected reasons to identify plausible reasons from wrong ones .
Outcome: The proposed task aims to shed light on commonsense knowledge needed for better reasoning . it is based on the collected reasons and a new task called WinoWhy .
Using Customer Service Dialogues for Satisfaction Analysis with Context-Assisted Multiple Instance Learning (D19-1)

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Challenge: Existing studies fail to provide comprehensive service satisfaction analysis . Existing models fail to include satisfaction polarity classification and sentimental utterance identification .
Approach: They propose a model that predicts customer sentiments and aggregates them into service satisfaction polarity.
Outcome: The proposed model predicts customer sentiments and aggregates them into service satisfaction polarity and reasoning clues.
IFIR: A Comprehensive Benchmark for Evaluating Instruction-Following in Expert-Domain Information Retrieval (2025.naacl-long)

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Challenge: Current information retrieval systems struggle to handle complex instructions, despite its critical importance . current models struggle to follow complex instructions in real-world applications, resulting in user-specific tasks.
Approach: They propose a benchmark to evaluate instruction-following information retrieval in expert domains.
Outcome: The proposed method improves on existing models and provides valuable insights to guide future advancements in retrieval.
Datasets for Scientific Literature Understanding: A Survey (2026.findings-acl)

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Challenge: Empowering machines to understand scientific literature is crucial for accelerating scientific discovery and advancing the AI for Science paradigm.
Approach: They propose a systematic taxonomy that organizes resources spanning structural understanding, text understanding, multimodal understanding and pre-training/instruction fine-tuning.
Outcome: The proposed taxonomy organizes resources spanning structural understanding, text understanding, multimodal understanding and pre-training/instruction fine-tuning.
Bring Invariant to Variant: A Contrastive Prompt-based Framework for Temporal Knowledge Graph Forecasting (2024.lrec-main)

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Challenge: Existing methods for temporal knowledge graph forecasting are insufficient structural contexts to learn effective representations.
Approach: They propose a Contrastive Prompt-based framework with Entity background information for TKG forecasting that brings time-invariant entity background information to time-variant structural information.
Outcome: The proposed framework is effective and stays competitive in inference with limited structural information.
AGENTVIGIL: Automatic Black-Box Red-teaming for Indirect Prompt Injection against LLM Agents (2025.findings-emnlp)

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Challenge: AGENTVIGIL is a black-box optimization framework to exploit indirect prompt injection vulnerabilities . indirect prompts compromise the core of LLM agents by manipulating contextual information rather than direct user prompts.
Approach: They propose a black-box optimization framework to exploit indirect prompt injection vulnerabilities . they use a Monte Carlo tree-based algorithm to iteratively refine inputs .
Outcome: The proposed framework achieves 71% and 70% success rates against two public benchmarks .
Table-R1: Region-based Reinforcement Learning for Table Understanding (2026.findings-acl)

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Challenge: Tables are a widely used data format that poses unique challenges for language models due to their structured row-column interactions.
Approach: They propose a region-based reinforcement learning approach that integrates region evidence into reasoning steps.
Outcome: The proposed method outperforms baseline models on three benchmark datasets and significantly reduces the reasoning token consumption by 67.5%.
Adaptive Parameterization for Neural Dialogue Generation (D19-1)

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Challenge: Existing models of open-domain dialogue generate responses based on sequence-to-sequence paradigms.
Approach: They propose an Adaptive Neural Dialogue generation model which manages various conversations with conversation-specific parameterization.
Outcome: The proposed model performs better on a large-scale conversational dataset.
Imagination and Contemplation: A Balanced Framework for Semantic-Augmented Multimodal Machine Translation (2025.findings-emnlp)

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Challenge: Multimodal Machine Translation (MMT) is effective in resolving linguistic ambiguities, but visual information often introduces redundancy or noise, potentially impairing translation quality.
Approach: They propose a semantic-augmented framework that integrates "Imagination" and "Contemplation" they first generate synthetic images from source text and align them with authentic images via an optimal transport loss .
Outcome: The proposed framework outperforms baselines on translation datasets with visually ambiguous or weakly correlated content.
G-HiRel: Enhancing the Adaption to Knowledge Updating for Large Language Model Reasoning (2026.findings-acl)

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Challenge: Large language models (LLMs) have good performance in multiple reasoning tasks, but are limited to adapt the rapid knowledge updates in the real-world scenario.
Approach: They propose an LLM reasoning framework with hierarchical relational retrieval for large-scale knowledge updating, named G-HiRel.
Outcome: The proposed framework achieves superiority in terms of accuracy and interpretability on three benchmarks.
Extracting and Combining Abilities For Building Multi-lingual Ability-enhanced Large Language Models (2025.emnlp-main)

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Challenge: Existing work relies on training with multi-lingual ability-related data, which may not be available for low-resource languages.
Approach: They propose a multi-lingual ability-enhanced LLM that extracts language-agnostic ability-related weights from LLMs and combine them across different languages by simple addition and subtraction operations without training.
Outcome: The proposed approach extracts language-agnostic ability-related weights from LLMs and combine them across different languages without training.
YuLan-Mini: Pushing the Limits of Open Data-efficient Language Model (2025.acl-long)

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Challenge: prevailing pre-training approaches for large language models involve several complexities.
Approach: They propose a low-cost training recipe and a robust optimization approach to mitigate training instability . they also propose synthesis, curriculum, and data selection pipelines to integrate data .
Outcome: The proposed model achieves top-tier performance among models with similar parameter scale . it is comparable to industry-leading models that require significantly more data .
Generating Classical Chinese Poems via Conditional Variational Autoencoder and Adversarial Training (D18-1)

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Challenge: Existing models for automatic poetry generation lack term novelty and thematic consistency.
Approach: They propose a conditional variational autoencoder with adversarial training for classical Chinese poem generation.
Outcome: The proposed model outperforms existing models on a large poetry corpus on 'classical Chinese' . it generates poems with novel terms and learns their thematic consistency with their titles.
FinReporting: An Agentic Workflow for Localized Reporting of Cross-Jurisdiction Financial Disclosure (2026.acl-demo)

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Challenge: FinReporting is an agentic workflow for localized cross-jurisdiction financial reporting . existing approaches assume a single-market setting and overlook structural differences across jurisdictions .
Approach: They propose a workflow that decomposes financial reporting into auditable stages . they use Large Language Models to extract and summarize corporate disclosures .
Outcome: The proposed system decomposes reporting into auditable stages . it improves consistency and reliability under heterogeneous reporting regimes.
Decoupling Mixture-of-Graphs: Unseen Relational Learning for Knowledge Graph Completion by Fusing Ontology and Textual Experts (2022.coling-1)

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Challenge: Existing methods for knowledge Graph Completion (KGC) fail in unseen relation representations.
Approach: They propose to use three kinds of graphs to obtain unseen relation representations . they propose to decouple mixture-of-graph experts (DMoG) for unseened relations learning .
Outcome: The proposed method outperforms the state-of-the-art methods on unseen relation representations.
Probing Toxic Content in Large Pre-Trained Language Models (2021.acl-long)

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Challenge: Existing studies on pre-trained language models have shown that they carry harmful biases towards different social groups.
Approach: They propose a method to probe English, French, and Arabic PTLMs and quantify the potentially harmful content they convey with respect to a set of templates.
Outcome: The proposed method analyzes PTLMs to predict masked tokens at the end of sentences to assess their toxicity.
Mixture of Weight-shared Heterogeneous Group Attention Experts for Dynamic Token-wise KV Optimization (2025.emnlp-main)

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Challenge: Existing methods for token-level KV optimization and grouping of tokens are inefficient and strain compute and storage resources.
Approach: They propose a mixture-of-expert approach that dynamically optimizes token-wise computation and memory allocation by a token-based expert-choice routing mechanism guided by learned importance scores.
Outcome: The proposed approach retains all tokens while adaptively routing them to specialized experts with varying KV group sizes, balancing granularity and efficiency.
LinguaLinked: Distributed Large Language Model Inference on Mobile Devices (2024.acl-demos)

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Challenge: Recent research shows that large language models demonstrate enhanced capabilities in various language tasks.
Approach: They introduce a system for decentralized, distributed LLM inference on mobile devices . they use optimized model assignment technique to segment LLMs and linear optimization to align segments with each device .
Outcome: The proposed system performs well on high-end to low-end Android devices.
Smart-Searcher: Incentivizing the Dynamic Knowledge Acquisition of LLMs via Reinforcement Learning (2025.findings-emnlp)

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Challenge: Large Language Models (LLMs) are powerful but prone to hallucinations due to static knowledge. Retrieval-augmented generation (RAG) helps by injecting external information, but current methods are costly, generalize poorly, or ignore the model’s internal knowledge.
Approach: They propose a framework to train large language models to leverage both internal and external knowledge sources.
Outcome: The proposed framework outperforms existing methods and achieves efficient retrieval-augmented reasoning.
Extremely Small BERT Models from Mixed-Vocabulary Training (2021.eacl-main)

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Challenge: Existing knowledge distillation methods cannot be directly applied to train student models with reduced vocabulary and embedding dimensions.
Approach: They propose a method to align teacher and student embeddings via mixed-vocabulary training.
Outcome: The proposed method compresses BERT-LARGE to a task-agnostic model with smaller vocabulary and hidden dimensions, which is an order of magnitude smaller than other distilled models.
Comparing Neighbors Together Makes it Easy: Jointly Comparing Multiple Candidates for Efficient and Effective Retrieval (2024.emnlp-main)

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Challenge: Experimental results show that using only bi-encoders as an intermediate reranker can improve top-1 accuracy with negligible slowdown (7%).
Approach: They propose a framework that compares a query and multiple embeddings of similar candidates through shallow self-attention layers, delivering rich representations contextualized to each other.
Outcome: The proposed framework compares a query and multiple embeddings of similar candidates through shallow self-attention layers, delivering rich representations contextualized to each other.
TimeR4 : Time-aware Retrieval-Augmented Large Language Models for Temporal Knowledge Graph Question Answering (2024.emnlp-main)

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Challenge: Temporal Knowledge Graph Question Answering (TKGQA) aims to answer temporal questions using knowledge in Temporal knowledge graphs (TKTs).
Approach: They propose a Time-aware retrieve-rewrite-retrieve-rerank framework to integrate temporal knowledge from TKGs into Large Language Models (LLMs) to reduce temporal hallucination, they propose rewrite module to rew questions using background knowledge stored in TKG's, then implement a retrieve-rank module to retrieve semantically and temporally relevant facts from Tkgs and rerank them according to temporal constraints.
Outcome: The proposed approach achieves relative gains of 47.8% and 22.5% on two datasets, underscoring its effectiveness in boosting the temporal reasoning abilities of LLMs.
Profile Consistency Identification for Open-domain Dialogue Agents (2020.emnlp-main)

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Challenge: Existing studies on improving attribute consistency focus on incorporating attribute information in responses, but few efforts have identified the consistency relations between response and attribute profile.
Approach: They propose a key-value structure information enriched BERT model to identify the profile consistency . they propose to incorporate attribute information into the generated responses .
Outcome: The proposed model improves over strong baselines on downstream tasks.
Position: LLM Watermarking Should Align Stakeholders’ Incentives for Practical Adoption (2026.findings-acl)

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Challenge: despite advances in watermarking algorithms, real-world deployment remains limited . model watermarks can be used to protect intellectual property and promote trust in AI .
Approach: They propose to revisit three classes of watermarking to examine incentives for large language models . model watermarks naturally aligns with LLM provider interests, yet faces new challenges in open-source ecosystems .
Outcome: The proposed methods can be used in dataset decontamination, user-controlled provenance, and in-context watermarking.
Glue pizza and eat rocks - Exploiting Vulnerabilities in Retrieval-Augmented Generative Models (2024.emnlp-main)

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Challenge: Retrieval-Augmented Generative (RAG) models enhance Large Language Models (LLMs) by integrating external knowledge bases.
Approach: They propose to exploit openness of RAG models by injecting deceptive content into the retrieval database, intentionally changing the model’s behavior.
Outcome: The proposed model can be exploited through crafted content uploads with access to the retriever.
Continual Generalized Intent Discovery: Marching Towards Dynamic and Open-world Intent Recognition (2023.findings-emnlp)

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Challenge: Currently, the generalized intent classification system only considers one stage of OOD learning and requires all IND data for joint training.
Approach: They propose a task that detects OOD intents from dynamic OOD data streams . they propose CGID method that bootstraps new intent discovery through class prototypes .
Outcome: The proposed task can detect out-of-domain (OOD) queries and extend them to the in-domain classifier . it can safely and efficiently detect out of-domain queries and avoid wrong operations .
Learning-by-Narrating: Narrative Pre-Training for Zero-Shot Dialogue Comprehension (2022.acl-short)

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Challenge: Existing models for dialogue comprehension are not available for the pre-training of such a model.
Approach: They propose a narrative-guided pre-training strategy that learns by narrating key information from a dialogue input.
Outcome: The proposed model performs better on four dialogue-based tasks and is comparable to existing models.
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.
Watch Every Step! LLM Agent Learning via Iterative Step-level Process Refinement (2024.emnlp-main)

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Challenge: Recent approaches to enhance agent performance focus on outcome rewards, which may lead to errors or suboptimal actions due to the absence of process supervision signals.
Approach: They propose a step-level framework that provides detailed step-by-step guidance to enhance agent training by using Monte Carlo methods.
Outcome: The proposed framework outperforms strong baselines on three tasks and shows that it is effective in augmenting efficiency and its applicability to diverse models.
Scaling Laws for Multilingual Language Models (2025.findings-acl)

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Challenge: Existing scaling laws for language models are limited to a limited number of languages, but they can be applied to arbitrary number of different languages.
Approach: They propose a scaling law for general-purpose decoder-only language models trained on multilingual data that shifts focus from individual languages to language families.
Outcome: The proposed scaling law can be applied to models trained on multilingual data . it can be used to predict performance across multiple languages and models .
ReAgent: Reversible Multi-Agent Reasoning for Knowledge-Enhanced Multi-Hop QA (2025.emnlp-main)

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Challenge: Multi-hop question answering (QA) is a central challenge in natural language processing . early mistakes can cause errors and undermine the final result, authors say .
Approach: They propose a reversible multi-agent reasoning framework that backtracks to earlier valid states when conflicts arise.
Outcome: Empirical evaluation shows that the framework improves on forward-only benchmarks by 6% . the approach enables agents to backtrack to valid states when conflicts arise .
WPO: Enhancing RLHF with Weighted Preference Optimization (2024.emnlp-main)

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Challenge: Off-policy preference optimization suffers from a distributional gap between the policy used for data collection and the target policy, leading to suboptimal optimization.
Approach: They propose a method to simulate on-policy learning with off-police preference data.
Outcome: The proposed method outperforms Direct Preference Optimization (DPO) by up to 5.6% on Alpaca Eval 2 and MT-bench.
TextHide: Tackling Data Privacy in Language Understanding Tasks (2020.findings-emnlp)

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Challenge: Unsolved privacy challenges in distributed or federated learning are a challenge for many domains including Natural Language Processing.
Approach: They propose a federated learning framework that adds an encryption step to prevent an eavesdropping attacker from recovering private text data.
Outcome: The proposed model can effectively defend against attacks on shared gradients or representations and the averaged accuracy reduction is only 1.9%.
MELOV: Multimodal Entity Linking with Optimized Visual Features in Latent Space (2024.findings-acl)

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Challenge: Existing approaches to multimodal entity linking focus on textual contexts but lack in social media vision modality.
Approach: They propose a latent space vision feature optimization framework MELOV to address these challenges . they exploit variational autoencoder to mine shared information and generate text-based visual features .
Outcome: The proposed framework is superior to existing methods on three benchmark datasets.
MPO: Boosting LLM Agents with Meta Plan Optimization (2025.findings-emnlp)

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Challenge: Existing methods for interactive planning tasks suffer from planning hallucinations and require retraining for each new agent.
Approach: They propose a framework that leverages explicit guidance through meta plans to assist agent planning and enables continuous optimization based on feedback from the agent’s task execution.
Outcome: The proposed framework outperforms existing baselines on two representative tasks and significantly improves task completion efficiency and generalization capabilities.
Graph-based Multilingual Product Retrieval in E-Commerce Search (2021.naacl-industry)

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Challenge: Modern e-commerce search systems require product retrieval under multilingual scenarios.
Approach: They propose a universal multilingual retrieval system that captures interactions between search queries and items in e-commerce search.
Outcome: The proposed system outperforms state-of-the-art retrieval models on five countries and has been deployed in production for multiple countries.
Rethinking Reasoning-Intensive Retrieval: Evaluating and Advancing Retrievers in Agentic Search Systems (2026.acl-long)

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Challenge: Existing evaluation benchmarks for retrievers are narrow and evaluate them in isolation . existing evaluation benchmarking frameworks focus on evaluating retrievers in isolation, obscuring their value in real-world applications.
Approach: They propose an evaluation framework that evaluates retrievers in agentic search systems . they provide expert-annotated reasoning aspects, positive documents, a reference response and evaluation rubrics .
Outcome: The proposed framework assesses retrievers in agentic search systems.
STINMatch: Semi-Supervised Semantic-Topological Iteration Network for Financial Risk Detection via News Label Diffusion (2023.emnlp-main)

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Challenge: Commercial news provides rich semantics and timely information for automated financial risk detection.
Approach: They propose a semi-supervised Semantic-Topological Iteration Network, STINMatch, along with a news-enterprise knowledge graph to endorse the risk detection enhancement.
Outcome: The proposed model outperforms existing models in terms of generalization and semantics and annotation.
Conv-Basis: A New Paradigm for Efficient Attention Inference and Gradient Computation in Transformers (2025.findings-emnlp)

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Challenge: a large computational cost for attention computation in large language models is a major obstacle .
Approach: They propose a convolution-like structure for attention computation using convolution matrices . they then propose an efficient approximation method to approximate the attention matrix .
Outcome: The proposed method achieves nearly linear time complexity in n1+o(1) time.
Effidit: An Assistant for Improving Writing Efficiency (2023.acl-demo)

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Challenge: Effidit is a digital writing assistant that provides three modules to help users write faster and more efficiently.
Approach: They present Effidit, a digital writing assistant that provides three modules to help users write higher-quality text more efficiently.
Outcome: Effidit expands the capabilities of a typical writing assistant by providing three modules . Effit can help users create their own text faster and more efficiently .
PDAMeta: Meta-Learning Framework with Progressive Data Augmentation for Few-Shot Text Classification (2024.lrec-main)

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Challenge: Existing text data augmentation methods can not ensure the diversity and quality of the generated data, which leads to sub-optimal performance.
Approach: They propose a meta-learning framework with progressive data augmentation for few-shot text classification using prompt-based data augmented by attention-based methods.
Outcome: The proposed framework outperforms state-of-the-art models and shows better robustness on four public few-shot text classification datasets.
Towards Infinite-Long Prefix in Transformer (2025.emnlp-main)

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Challenge: Prefix Learning is an empirically efficient and effective method for language models . but the theoretical understandings are limited on the performance of such methods .
Approach: They propose a method that can train an ultra-long prefix in a stylized setting using the Neural Tangent Kernel framework.
Outcome: The proposed method can achieve superior performance on vision, natural language, and math data.
Hard Prompts Made Interpretable: Sparse Entropy Regularization for Prompt Tuning with RL (2024.acl-long)

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Challenge: Prompt tuning is an important technique for directing model behaviors and eliciting desired responses.
Approach: They propose to find optimal prompt tokens using soft Q-learning to optimize models for prompt tuning.
Outcome: The proposed method improves on baseline prompt tuning, and the results are more natural and interpretable.
Domain Adaptation for Person-Job Fit with Transferable Deep Global Match Network (D19-1)

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Challenge: Existing methods to solve person-job fit in single-domain setting are limited by labeled data.
Approach: They propose a deep global match network for capturing the global semantic interactions between two sentences from a job posting and a candidate resume respectively.
Outcome: The proposed model is effective when there is not enough labeled data.
LimRank: Less is More for Reasoning-Intensive Information Reranking (2025.emnlp-main)

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Challenge: Existing approaches to rerank information require large-scale fine-tuning, which is computationally expensive.
Approach: They propose an open-source pipeline for generating diverse, challenging, and realistic reranking examples.
Outcome: The proposed model performs competitively on two benchmarks, while being trained on less than 5% of the data typically used in prior work.
Boosting LLM Agents with Recursive Contemplation for Effective Deception Handling (2024.findings-acl)

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Challenge: Recent advances in large language models (LLMs) have led to significant success in using LLMs as agents.
Approach: They propose a cognitive framework that incorporates first-order and second-order perspective transitions into LLMs to enhance their ability to identify and counteract deceptive information.
Outcome: The proposed framework enhances LLMs’ ability to identify and counteract deceptive information without extra fine-tuning and data.
Exploring Fine-Grained Human Motion Video Captioning (2025.coling-main)

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Challenge: Existing video captioning models fail to capture nuanced semantics of videos . existing models generate coarse descriptions of human motions, resulting in poor quality .
Approach: They construct a fine-grained human motion video captioning dataset named BoFiT and a model that generates fine-grain descriptions of human motions via prompting.
Outcome: The proposed model outperforms existing models on comprehensive metrics.
Chameleon: A Language Model Adaptation Toolkit for Automatic Speech Recognition of Conversational Speech (D19-3)

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Challenge: Language model adaptation (LMA) is a promising solution for conversational speech recognition systems.
Approach: They propose to use language model adaptation techniques to adapt language models to conversational speech recognition.
Outcome: The proposed toolkit compares state-of-the-art language model adaptation techniques in conversational speech recognition tasks.
RJE: A Retrieval-Judgment-Exploration Framework for Efficient Knowledge Graph Question Answering with LLMs (2025.emnlp-main)

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Challenge: Knowledge graph question answering (KGQA) aims to answer natural language questions using knowledge graphs.
Approach: They propose a framework that retrieves refined reasoning paths and evaluates their sufficiency.
Outcome: The proposed framework outperforms existing baselines while enabling small open-source LLMs to achieve competitive results without fine-tuning LLM.
IRT-Router: Effective and Interpretable Multi-LLM Routing via Item Response Theory (2025.acl-long)

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Challenge: Large language models have demonstrated exceptional performance across a wide range of tasks . however, selecting the optimal LLM to respond to a user query often necessitates a delicate balance between performance and cost.
Approach: They propose a multi-LLM routing framework that efficiently routes user queries to the most suitable LLM.
Outcome: The proposed framework outperforms baseline methods in terms of effectiveness and interpretability.
Treble Counterfactual VLMs: A Causal Approach to Hallucination (2025.findings-emnlp)

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Challenge: Existing studies link hallucination to data or representation biases, but their causal origins remain unclear.
Approach: They propose a causal framework to analyze and mitigate hallucination in vision-language models by using counterfactual analysis to estimate the Natural Direct Effect (NDE) of each modality and their interaction.
Outcome: The proposed framework significantly reduces hallucination while preserving task performance while retaining reliability.
Empathetic and Emotionally Positive Conversation Systems with an Emotion-specific Query-Response Memory (2022.findings-emnlp)

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Challenge: Existing emotional conversation systems output responses according to either a given emotion or the user’s emotion reflected in the input queries.
Approach: They propose to generate empathetic responses catering to the user’s emotions while leading the conversation to be emotionally positive by abstracting the conversation corpus and extracting the different responding strategies for different users’ emotions and conversational topics into a memory.
Outcome: The proposed model surpasses the baseline methods in appropriateness, diversity, and generating emotionally positive responses.
UNO Arena for Evaluating Sequential Decision-Making Capability of Large Language Models (2024.emnlp-main)

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Challenge: Existing LLMs demonstrate powerful capabilities between tasks, but can they make sequential decisions?
Approach: They propose to evaluate sequential decision-making capability of large language models (LLMs) using novel metrics based Monte Carlo methods.
Outcome: The proposed benchmark improves sequential decision-making performance compared to the vanilla LLM player.
PCR4ALL: A Comprehensive Evaluation Benchmark for Pronoun Coreference Resolution in English (2022.lrec-1)

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Challenge: Existing PCR systems are not reliable in real applications due to weak semantic meanings of pronouns.
Approach: They propose a benchmark and toolbox that evaluates performance of PCR systems from different perspectives.
Outcome: The proposed benchmark and toolbox evaluates the performance of PCR systems from different perspectives.
T2R-BENCH: A Benchmark for Real World Table-to-Report Task (2025.emnlp-main)

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Challenge: Existing table benchmarks lack the capacity to adequately assess the practical application of table reasoning in industrial applications.
Approach: They propose a bilingual table-to-report task and a table-based benchmark to assess the quality of table reasoning.
Outcome: The proposed task is based on a bilingual benchmark with 457 industrial tables and evaluation criteria to measure the quality of report generation.
Improving Pre-trained Language Models with Knowledge Enhancement and Filtering Framework (2025.findings-naacl)

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Challenge: Existing knowledge enhancement techniques for pre-trained language models (PLMs) introduce noisy entity representations.
Approach: They propose a knowledge enhancement filter that integrates external knowledge bases to enhance PLMs' ability to capture entity knowledge.
Outcome: The proposed method achieves the highest F1-score and accuracy while reducing the computational cost by 1.7-2.5x.
UCS-SQL: Uniting Content and Structure for Enhanced Semantic Bridging In Text-to-SQL (2025.findings-acl)

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Challenge: Existing methods overlook the challenge of effectively transforming structure information from NL to SQL.
Approach: They propose a text-to-SQL framework that unites content and structure pipes to bridge the gap between NL and SQL.
Outcome: The proposed framework bridges the gap between natural language questions and SQL by combining content and structure pipes.
API-Bank: A Comprehensive Benchmark for Tool-Augmented LLMs (2023.emnlp-main)

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Challenge: Recent research has demonstrated that Large Language Models (LLMs) can enhance their capabilities by utilizing external tools.
Approach: They propose a runnable evaluation system consisting of 73 API tools and an annotation system for 314 tool-use dialogues with 753 API calls.
Outcome: The proposed benchmark assesses the effectiveness of existing LLMs by analyzing 314 tool-use dialogues with 753 API calls.
What Makes for Good Visual Instructions? Synthesizing Complex Visual Reasoning Instructions for Visual Instruction Tuning (2025.coling-main)

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Challenge: Experimental results show that visual instruction tuning improves performance of Multi-modal Large Language Models (MLLMs) to extend the application scope of Large Language Modells, a surge of work augments LLMs with vision encoders to endow the ability of multi-modal cognition and reasoning.
Approach: They propose a systematic approach to create high-quality visual reasoning instructions using a synthesize-complicate-reformulate paradigm.
Outcome: The proposed method improves performance of MLLMs by 27.86% and 27.60% on MME-Perception and MME Cognition.
SafeKey: Amplifying Aha-Moment Insights for Safety Reasoning (2025.emnlp-main)

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Challenge: Large Reasoning Models (LRMs) introduce a new paradigm of explicitly reasoning before answering, but they pose great safety risks against harmful queries and adversarial attacks.
Approach: They propose a safety aha moment that activates safety reasoning and leads to a safe response.
Outcome: The proposed model can generalize to unseen jailbreak prompts while maintaining general abilities.
Multilingual Knowledge Graph Completion from Pretrained Language Models with Knowledge Constraints (2023.findings-acl)

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Challenge: Existing methods for multilingual knowledge graph completion do not align with mKGC tasks because of their English-centric bias.
Approach: They propose to use multilingual pretrained language models to solve queries in different languages by reasoning a tail entity.
Outcome: The proposed method outperforms the previous SOTA on Hits@1 and Hits @10 by 12.32% and 16.03% on public datasets.
SimpleDeepSearcher: Deep Information Seeking via Web-Powered Reasoning Trajectory Synthesis (2025.findings-emnlp)

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Challenge: Existing approaches to deep search training lack high-quality training trajectories, prohibitive computational costs and lack of high-fidelity training data.
Approach: They propose a framework that synthesizes high-quality training data by simulating real user interactions in live web search environments.
Outcome: The proposed framework synthesizes high-quality training data by simulating user interactions in live web search environments.
Incorporating Object-Level Visual Context for Multimodal Fine-Grained Entity Typing (2023.findings-emnlp)

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Challenge: Experimental results show that fine-grained entity typing is superior to text-based methods.
Approach: They propose a task called fine-grained entity typing to classify entities . they propose combining textual and visual contexts to capture fine-granular semantic information .
Outcome: The proposed approach achieves superior classification performance compared to previous text-based approaches.
Improving Multilingual Instruction Finetuning via Linguistically Natural and Diverse Datasets (2024.findings-emnlp)

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Challenge: Advancements in Large Language Models (LLMs) have significantly enhanced instruction-following capabilities, but most IFT datasets are predominantly in English, limiting model performance in other languages.
Approach: They propose a method for collecting multilingual IFT datasets that preserves linguistic naturalness and ensures prompt diversity.
Outcome: Experiments show that LLMs fine-tuned using this method show significant improvements in generative and discriminative tasks.
Improving Zero-Shot Entity Linking Candidate Generation with Ultra-Fine Entity Type Information (2022.coling-1)

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Challenge: Entity linking is a task of assigning entity mentions to referent entities in a knowledge base.
Approach: They propose to use ultra-fine-grained type information to improve the generalization ability of EL models by utilizing a low-level task to extract ultra-finish entity type information.
Outcome: The proposed model achieves state-of-the-art in the zero-shot entity linking task .
ISR: Self-Refining Referring Expressions for Entity Grounding (2025.acl-long)

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Challenge: Entity grounding is a crucial task in the construction of multimodal knowledge graphs.
Approach: They propose a novel scheme to enhance the multimodal large language model's capability to generate high quality REs for the given entities as explicit contextual clues.
Outcome: The proposed method surpasses other methods in entity grounding, highlighting its effectiveness, robustness and potential for broader applications.
PCMID: Multi-Intent Detection through Supervised Prototypical Contrastive Learning (2023.findings-emnlp)

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Challenge: Existing approaches to intent detection assume that each utterance represents only a single intent.
Approach: They propose a framework for intent detection that can learn multiple representations of a given user utterance under the context of different intent labels in an optimized semantic space.
Outcome: The proposed framework achieves state-of-the-art on multiple public benchmark datasets and a private real-world dataset for the multi-intent detection task.
VF-Eval: Evaluating Multimodal LLMs for Generating Feedback on AIGC Videos (2025.acl-long)

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Challenge: Multimodal large language models (MLLMs) are used for video quality assessment, image captioning and video analysis.
Approach: They propose a benchmark to evaluate MLLMs on AIGC videos using coherence validation, error awareness, error type detection and reasoning evaluation tasks.
Outcome: The proposed benchmark evaluates 13 frontier MLLMs on AIGC videos.
A Span-based Multimodal Variational Autoencoder for Semi-supervised Multimodal Named Entity Recognition (2022.emnlp-main)

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Challenge: Existing methods for named entity recognition on social media are not efficient for semi-supervised MNER because of the mismatch between the posted text and image.
Approach: They propose a novel method to fuse the text and image features for multimodal named entity recognition under semi-supervised setting by exploiting modal-specific VAEs.
Outcome: The proposed method outperforms baselines under supervised setting and improves performance with less labeled data than existing semi-supervised methods.
DPWriter: Reinforcement Learning with Diverse Planning Branching for Creative Writing (2026.acl-long)

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Challenge: Existing methods for enhancing large language models (LLMs) lack explicit mechanisms for guiding diverse exploration and instead prioritize efficiency and performance over diversity.
Approach: They propose a reinforcement learning-based framework that decomposes the generation process into explicitly planned intermediate steps and introduces divergence at the planning phase based on diversity variation.
Outcome: The proposed method significantly outperforms existing baselines on creative writing benchmarks on a semi-structured long chain-of-thought (CoT) it introduces divergence at the planning phase based on diversity variation, alongside a group-aware diversity reward to encourage distinct trajectories.
WildFeedback: Aligning LLMs With In-situ User Interactions And Feedback (2026.acl-long)

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Challenge: Traditional alignment methods rely on human annotations and are subjective and misalignment with real-world user preferences.
Approach: They propose a framework that leverages in-situ user feedback during conversations with LLMs to create preference datasets automatically.
Outcome: The proposed framework identifies and classifies user feedback to LLM responses between conversation turns and creates examples of preferred and dispreferred responses according to user preferences.
SentSim: Crosslingual Semantic Evaluation of Machine Translation (2021.naacl-main)

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Challenge: Machine translation (MT) is currently evaluated in one of two ways: monolingually or trained crosslingually by building a supervised model to predict quality scores from human-labeled data.
Approach: They propose an unsupervised model that directly compares the source and machine translated sentence using strong pretrained multilingual word and sentence representations.
Outcome: The proposed model outperforms glass-box approaches to quality estimation that rely on a supervised model.
SafeRAG: Benchmarking Security in Retrieval-Augmented Generation of Large Language Model (2025.acl-long)

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Challenge: Existing approaches to integrating external knowledge into large language models (LLMs) however, the incorporation of external knowledge increases the vulnerability of LLMs .
Approach: They propose a benchmark to evaluate the RAG security using a dataset . they classify attack tasks into silver noise, inter-context conflict, soft ad, and white Denial-of-Service .
Outcome: The proposed benchmark evaluates the security of RAG against 14 representative RAG components.
The Hallucination Tax of Reinforcement Finetuning (2025.findings-emnlp)

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Challenge: Reinforcement finetuning (RFT) has become a standard approach for enhancing the reasoning capabilities of large language models (LLMs).
Approach: They propose to incorporate 10% SUM into RFT to restore appropriate refusal behavior with minimal accuracy trade-offs on solvable tasks.
Outcome: The proposed approach reduces model refusal rates by more than 80%, which significantly increases model’s tendency to hallucinate.
Parrot: Enhancing Multi-Turn Instruction Following for Large Language Models (2024.acl-long)

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Challenge: Existing studies overlook the multi-turn instruction following ability of large language models (LLMs) Extensive experiments show that Parrot improves current LLMs by up to 7.2% in multi- turn instruction following.
Approach: They propose a method for collecting multi-turn instructions that feature human-like queries, such as anaphora and ellipsis, and a context-aware preference optimization strategy to further enhance LLMs for complex queries.
Outcome: The proposed method improves existing LLMs by up to 7.2% in multi-turn instruction following.
Mobile-R1: Towards Interactive Capability for VLM-Based Mobile Agent via Systematic Training (2026.acl-long)

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Challenge: Existing approaches to training agents for visual-language models trap them in local optima, hindering exploration and error correction with the environment.
Approach: They propose a hierarchical training recipe that bridges atomic action execution and strategic task completion.
Outcome: The proposed training recipe bridges atomic action execution and strategic task completion.
Multimodal Machine Translation with Text-Image In-depth Questioning (2025.findings-acl)

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Challenge: Multimodal machine translation (MMT) models focus on intermodal interactions, but focus on simple interactions between nouns and entities in image, overlooking global semantic alignment.
Approach: They propose a Text-Image In-depth Questioning method to deepen interactions and optimize translations by utilizing visual data to capture global semantic alignment.
Outcome: The proposed method achieves state-of-the-art results on five translation directions of Multi30K and AmbigCaps, with +2.35 BLEU on the challenging MSCOCO benchmark.

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