Papers by Min Liu

161 papers
OmniCharacter: Towards Immersive Role-Playing Agents with Seamless Speech-Language Personality Interaction (2025.acl-long)

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Challenge: Existing methods focus on replicating dialogues in textual form, neglecting the role’s voice traits as a crucial effect in interaction, which tends to be more immersive experiences in realistic scenarios.
Approach: They propose a first seamless speech-language personality interaction model to achieve immersive RPAs with low latency.
Outcome: The proposed model exhibits role-specific personality traits and vocal traits throughout the interaction, enabling a mixture of speech and language responses.
SumSurvey: An Abstractive Dataset of Scientific Survey Papers for Long Document Summarization (2024.findings-acl)

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Challenge: a growing need for long document summarization datasets with 16k input is causing problems.
Approach: They propose to use a dataset to analyze salient information in long document summarizations.
Outcome: The proposed dataset outperforms existing models and LLMs in the distribution form of salient information and the distribution of salinal information is an indicator of quality.
A Multi-sentiment-resource Enhanced Attention Network for Sentiment Classification (P18-2)

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Challenge: Existing sentiment classification approaches do not fully exploit sentiment linguistic knowledge.
Approach: They propose a Multi-sentiment-resource Enhanced Attention Network to integrate sentiment linguistic knowledge into the deep neural network via attention mechanisms.
Outcome: The proposed network captures sentiments from different representation sub-spaces, and is superior to strong competitors.
Towards Better Hierarchical Text Classification with Data Generation (2023.findings-acl)

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Challenge: Existing methods to improve hierarchical text classification are expensive and lack high-quality labeled data.
Approach: They propose a hierarchical text classification framework that can achieve both label controllability and text diversity by extracting high-quality hierarchic label information.
Outcome: The proposed method can achieve label controllability and text diversity by extracting high-quality hierarchical label information.
Bridging Subword Gaps in Pretrain-Finetune Paradigm for Natural Language Generation (2021.acl-long)

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Challenge: Existing methods to pretrain language models are limited by one-size-fits-all vocabulary . embeddings of mismatch tokens can be efficiently initialized in downstream tasks .
Approach: They propose to extend pretrain-finetune pipeline with an embedding transfer step . plug-and-play embeddable generator is introduced to generate any input token .
Outcome: The proposed approach allows for more efficient and better performed NLG models.
Retrieval, Analogy, and Composition: A framework for Compositional Generalization in Image Captioning (2021.findings-emnlp)

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Challenge: Existing approaches fail to generalize well to concepts that are not observed during training.
Approach: They propose a framework that revolves around probing several similar image caption training instances and performing analogical reasoning over relevant entities in retrieved prototypes.
Outcome: The proposed framework improves on the widely used image captioning benchmarks and on composition-related evaluation metrics.
Hierarchical Acoustic-Semantic Modeling: Modality Separation and Semantic Coherence for Full-Duplex SLMs (2026.acl-long)

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Challenge: despite significant progress, full-duplex SLMs are constrained by severe modality interference, authors say . modality interferes with acoustic and semantic modeling, making them unintelligent and unnatural . authors propose a hierarchical parameter separation strategy that decouples conflicting modalities in deep layers .
Approach: They propose a hierarchical parameter separation strategy that decouples conflicting modalities in deep layers while preserving cross-modality coherence via a dedicated semantic alignment channel.
Outcome: The proposed method significantly advances the state of the art on full-duplex benchmarks . it decouples conflicting modalities in deep layers while preserving cross-modality coherence .
FunnelRAG: A Coarse-to-Fine Progressive Retrieval Paradigm for RAG (2025.findings-naacl)

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Challenge: Retrieval-Augmented Generation (RAG) is widely adopted in Large Language Models, but is flat and has limitations such as a significant burden on one retriever and constant granularity limits the ceiling of retrieval performance.
Approach: They propose a progressive retrieval paradigm with coarse-to-fine granularity for RAG, termed FunnelRAG, so as to balance effectiveness and efficiency.
Outcome: The proposed paradigm achieves comparable retrieval performance while the time overhead is reduced by nearly 40%.
Reflection on Knowledge Graph for Large Language Models Reasoning (2025.findings-acl)

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Challenge: Existing methods for supplementing Large Language Models (LLMs) with knowledge graphs often introduce noise in the retrieval and reasoning pipeline, hindering their ability to integrate external knowledge for complex multi-hop question answering.
Approach: They propose a framework to enhance LLMs' reasoning capabilities through reflective engagement with knowledge graphs by Query Decoupling, LLM-Driven Knowledge Graph Exploration, and Inference with Knowledge Reconstruction.
Outcome: The proposed framework integrates external knowledge into LLMs and trains them to leverage this knowledge for answering questions.
Towards Explainable Temporal Reasoning in Large Language Models: A Structure-Aware Generative Framework (2025.findings-acl)

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Challenge: Existing studies on temporal reasoning models neglect the explainable reasoning processes underlying the results.
Approach: They propose a structure-aware generative framework that integrates Graph structures with text for Explainable TEmporal Reasoning.
Outcome: The proposed framework achieves state-of-the-art performance while also demonstrating robust generalization capabilities.
CommonIT: Commonality-Aware Instruction Tuning for Large Language Models via Data Partitions (2024.emnlp-main)

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Challenge: Current studies have focused on fine-tuning, but the use of instruction tuning is not as effective as fine-cuning.
Approach: They propose a commonality-aware instruction tuning strategy to cluster instruction datasets into distinct groups with three proposed metrics Task, Embedding and Length.
Outcome: The proposed strategy boosts an average improvement of 2.1% on the general domain and 5.2% on the special domain.
SMiLE: Schema-augmented Multi-level Contrastive Learning for Knowledge Graph Link Prediction (2022.findings-emnlp)

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Challenge: Existing methods for linking knowledge graphs lack contextual information in entity neighborhoods, which leads to false prediction results.
Approach: They propose a Schema-augmented Multi-level contrastive LEarning framework to conduct knowledge graph link prediction using a knowledge graph schema.
Outcome: The proposed framework is based on a knowledge graph schema and is compared against state-of-the-art datasets.
Data Quality Enhancement on the Basis of Diversity with Large Language Models for Text Classification: Uncovered, Difficult, and Noisy (2025.coling-main)

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Challenge: Existing methods for text classification based on large language models are difficult to apply directly to solve.
Approach: They propose a data quality enhancement method to improve LLMs' performance in classification tasks by using a greedy algorithm to select data and then performing fine-tuning.
Outcome: The proposed method improves the performance of large language models in text classification tasks and significantly improves training efficiency, saving nearly half of the training time.
ZoFia: Zero-Shot Fake News Detection with Entity-Guided Retrieval and Multi-LLM Interaction (2026.findings-acl)

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Challenge: Large language models (LLMs) are limited by knowledge cutoff and can generate factual hallucinations when handling time-sensitive news.
Approach: They propose a two-stage zero-shot fake news detection framework that uses a hierarchical salience and saliency-calibrated minimum margin of relevance algorithm to extract core entities accurately.
Outcome: The proposed framework outperforms existing zero-shot baselines and even most few-shot methods on two public datasets.
Self-Powered LLM Modality Expansion for Large Speech-Text Models (2024.emnlp-main)

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Challenge: Large language models exhibit remarkable performance across diverse tasks . however, these methods require significant resource demands and tend to overfit specific tasks.
Approach: They propose a self-powered LSM that leverages augmented automatic speech recognition data generated by the model itself for more effective instruction tuning.
Outcome: The proposed model mitigates speech anchor bias and improves the fusion of speech and text modalities in large language models.
BERT-EMD: Many-to-Many Layer Mapping for BERT Compression with Earth Mover’s Distance (2020.emnlp-main)

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Challenge: Pre-trained language models have been proposed and applied to many NLP tasks, yielding state-of-the-art performance, but high storage and computational costs obstruct them to be effectively deployed on resource-constrained devices and real-time applications.
Approach: They propose a BERT distillation method which allows each intermediate student layer to learn from any intermediate teacher layers.
Outcome: The proposed method can learn from different teacher layers adaptively for different NLP tasks.
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.
Progressive Re-ranking for Multimodal Retrieval-Augmented Generation via Curriculum Learning (2026.findings-acl)

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Challenge: Existing approaches to improve retrieval performance of large language models are limited by static knowledge.
Approach: They propose a multimodal re-ranking framework that combines curriculum learning with fine-grained reranking and multimodal section reassessment to improve CLIP-based visual coarse-grain retrieval.
Outcome: The proposed framework achieves state-of-the-art answer accuracy and competitive retrieval performance on InfoSeek and Enc-VQA.
SILC-EFSA: Self-aware In-context Learning Correction for Entity-level Financial Sentiment Analysis (2025.coling-main)

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Challenge: Currently, most sentiment analysis corpora use sequence-level annotation.
Approach: They propose a two-stage approach to financial entity-level sentiment analysis called Self-aware In-context Learning Correction.
Outcome: The proposed approach achieves state-of-the-art on the largest English and Chinese financial entity-level sentiment analysis datasets to date.
AgentCourt: Simulating Court with Adversarial Evolvable Lawyer Agents (2025.findings-acl)

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Challenge: Existing legal language models struggle with dynamic courtroom interactions, resulting in overfitting to standardized legal tasks.
Approach: They propose a new adversarial evolutionary approach for agents that performs dynamic knowledge learning and evolution through structured adversarials in a simulated courtroom program.
Outcome: The proposed approach outperforms existing LLM-based models in three critical dimensions: cognitive agility, professional knowledge, and logical rigor.
ToolRM: Towards Agentic Tool-Use Reward Modeling (2026.findings-acl)

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Challenge: lack of reliable reward models for tool-use tasks has limited progress toward agentic AI . recent advances in agentic artificial intelligence are driven by tool-using capabilities of large language models.
Approach: They propose a pipeline that constructs pairwise preference data using rule-based scoring and multidimensional sampling to build lightweight reward models.
Outcome: The proposed model outperforms existing models on tool calling tasks with higher accuracy.
Dynamic Sampling that Adapts: Self-Aware Iterative Data Persistent Optimization for Mathematical Reasoning (2026.findings-acl)

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Challenge: Current data selection paradigms rely on static, externally defined metrics, which fail to adapt to the evolving capabilities of models during training.
Approach: They propose a dynamic sampling framework that aligns training data with the model's intrinsic competence by iterating on real-time feedback.
Outcome: Extensive experiments on eight benchmarks show that SAI-DPO outperforms static baselines at most nearly 6 points, achieving state-of-the-art efficiency with significantly less data.
Data Interpreter: An LLM Agent for Data Science (2025.findings-acl)

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Challenge: Large Language Models (LLMs) excel in various domains but face challenges when applied to data science workflows due to their complex, multi-stage nature.
Approach: They propose a hierarchical graph-based agent that represents complexity and a progressive strategy for step-by-step verification, refinement, and consistent context management.
Outcome: The proposed agent surpasses state-of-the-art baselines on the MATH dataset and performs better on InfiAgent-DABench.
StoryMI: Steerable Multi-Agent Therapeutic Dialogue Generation (2026.findings-acl)

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Challenge: Motivational interviewing (MI) is a directive, client-centered counseling approach for eliciting clients' motivation for behavioral change.
Approach: They propose a multi-LLM agent framework for controllable MI dialogue generation . therapist and client agents generate MI-coded utterances guided by MI codes .
Outcome: The proposed framework can generate fluent dialogues with minimal intervention time and a high level of evaluation.
AgentInit: Initializing LLM-based Multi-Agent Systems via Diversity and Expertise Orchestration for Effective and Efficient Collaboration (2025.findings-emnlp)

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Challenge: Existing MAS initialization methods do not fully account for the collaborative needs of the generated agents in subsequent stages.
Approach: They propose to use a Natural Language to Format mechanism to optimize the structure of agent teams and incorporate a natural language to format mechanism to ensure consistency and standardization.
Outcome: The proposed method outperforms state-of-the-art initialization methods and pre-defined strategies across various frameworks and tasks while reducing token consumption.
DB-LLM: Accurate Dual-Binarization for Efficient LLMs (2024.findings-acl)

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Challenge: Existing methods for ultra-low bit quantization cause severe accuracy drops . a novel Dual-Binarization method is proposed for efficient Large Language Models .
Approach: They propose a Dual-Binarization method that takes 2-bit-width and binarization into account . they propose DB-LLM, which uses a 2-bit binarized weighted model to represent weights efficiently .
Outcome: The proposed method surpasses the current State-of-the-Art in ultra-low bit quantization and achieves 20% reduction in computational consumption compared to the SOTA method under the same bit-width.
GTA: Supervised-Guided Reinforcement Learning for Text Classification with Large Language Models (2025.findings-emnlp)

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Challenge: Reinforcement learning fine-tuning methods suffer from inefficient exploration and slow convergence . supervised fine- tuning methods have limited performance ceiling and less solid theoretical foundation .
Approach: They propose a Guess-Think-Answer framework that combines supervised and supervised learning in a unified training paradigm.
Outcome: The proposed framework outperforms both standalone SFT and RL training models on three text classification benchmarks.
Deja vu: Contrastive Historical Modeling with Prefix-tuning for Temporal Knowledge Graph Reasoning (2024.findings-naacl)

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Challenge: Existing text-based methods for Temporal Knowledge Graph Reasoning struggle to balance textual knowledge and temporal information with expensive purpose-built training strategies.
Approach: They propose a Contrastive historical modeling framework with prefix-tuning for TEmporal Reasoning that feeds history-contextualized text into the pseudo-Siamese encoders to strike a textual-temporal balance.
Outcome: The proposed framework achieves superior performance on four transductive and three few-shot inductive TKGR benchmarks.
Beyond Memorization: The Challenge of Random Memory Access in Language Models (2024.acl-long)

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Challenge: Recent advances in Language Models (LMs) have shown their effectiveness in knowledge-intensive tasks.
Approach: They investigate whether a generative language model is able to access its memory sequentially or randomly.
Outcome: The proposed LMs are able to access memory sequentially or randomly.
MMEvol: Empowering Multimodal Large Language Models with Evol-Instruct (2025.findings-acl)

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Challenge: a new framework for image-text instruction data evolution improves MLLM performance . lack of high-quality instruction data remains a major bottleneck in ML modeling .
Approach: They propose a multimodal instruction data evolution framework that iteratively enhances data quality through fine-grained perception, cognitive reasoning, and interaction evolution.
Outcome: The proposed approach improves MLLM performance in nine vision-language tasks while using significantly less data.
Revisiting Token Dropping Strategy in Efficient BERT Pretraining (2023.acl-long)

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Challenge: Token dropping is a recently-proposed strategy to speed up the pretraining of masked language models, such as BERT.
Approach: They propose a semantic-consistent learning method to improve token dropping by skipping the computation of a subset of input tokens at several middle layers.
Outcome: The proposed method achieves consistent and significant performance gains across all tasks and model sizes.
OLMoTrace: Tracing Language Model Outputs Back to Trillions of Training Tokens (2025.acl-demo)

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Challenge: tracing language models' outputs back to training data is a problem because they are trained on text corpora with trillions of tokens . existing methods for tracers have not been scaled to work within this multi-trillion-token setting .
Approach: They propose a system that traces language models' outputs verbatim back to training data . OLMOTRACE retrieves documents from the model's training data that contain exact matches .
Outcome: The proposed system can find verbatim matches between LM output and training data . it can be used to explore fact checking, hallucination, and creativity of language models .
On the Hallucination in Simultaneous Machine Translation (2024.acl-short)

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Challenge: Currently, there are no studies which systematically analyze hallucination in SiMT.
Approach: They conduct a comprehensive analysis of hallucination in simultaneous machine translation (SiMT) they find that halluciation is extremely severe, especially as latency increases .
Outcome: The results show that it is possible to alleviate hallucination by decreasing the over usage of target-side information for SiMT.
Calibrated Speculative Decoding: Frequency-Guided Candidate Selection for Efficient Inference (2026.acl-long)

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Challenge: Speculative decoding (SD) is a powerful and efficient way to accelerate autoregressive generation.
Approach: They propose a training-free framework that recovers valid tokens discarded by standard verification . they use online correction memory and Semantic Consistency Gating to analyze rejections .
Outcome: The proposed framework outperforms existing methods and achieves peak throughput speedup of 2.33x.
Expanding before Inferring: Enhancing Factuality in Large Language Models through Premature Layers Interpolation (2025.emnlp-main)

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Challenge: Existing approaches to generating factually inconsistent outputs are resource-intensive.
Approach: They propose a plug-and-play intervention designed to enhance factuality by inserting premature layers formed through mathematical interpolation with adjacent layers.
Outcome: The proposed intervention reduces hallucinations while outperforming baselines on four datasets.
AgentDropout: Dynamic Agent Elimination for Token-Efficient and High-Performance LLM-Based Multi-Agent Collaboration (2025.acl-long)

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Challenge: Existing methods for MAS suffer from high token consumption and inefficiency due to frequent generation and communication among multiple agents.
Approach: They propose a multi-agent system based on large language models that identifies redundant agents and communication across different communication rounds by optimizing the adjacency matrices of the communication graphs and eliminates them to enhance both token efficiency and task performance.
Outcome: The proposed method reduces prompt token consumption and completion token consumption by 18.4% and improves task performance by 1.14.
DeReA: Improving Idiom Translation with Detect-Retrieve-Arbitrate Reasoning (2026.acl-long)

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Challenge: Existing approaches to idiom translation are limited by the constraints of static parametric memory and retrieval noise . idiomatic expressions are non-compositional units where figurative meanings diverge from literal interpretations .
Approach: They propose a detect-retrieve-arbitrate framework that detects idiomatic spans by reasoning over semantic conflicts between literal and contextual meanings.
Outcome: The proposed framework improves GPT-5-mini and Emerging Slang datasets on various model scales.
DISC: Plug-and-Play Decoding Intervention with Similarity of Characters for Chinese Spelling Check (2025.acl-long)

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Challenge: Chinese spelling check (CSC) tasks require that incorrect characters are usually similar to the correct ones in either phonetics or glyph.
Approach: They propose a plug-and-play decoding intervention with similarity of characters module for Chinese spelling check (CSC) they propose to incorporate phonetic and glyph similarities only during the inference phase.
Outcome: The proposed method significantly improves Chinese spelling check models on benchmarks and on benchmark datasets.
Improving Attributed Text Generation of Large Language Models via Preference Learning (2024.findings-acl)

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Challenge: Large language models have been widely adopted in natural language processing, yet they produce unreliable content.
Approach: They propose to model the attribution task as preference learning and introduce an automatic preference optimization framework that synthesizes attribution preference data.
Outcome: The proposed method achieves state-of-the-art citation F1 with higher answer quality than existing methods.
MCS: An In-battle Commentary System for MOBA Games (2022.coling-1)

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Challenge: In-battle commentary is an important component of live streaming of e-sports competitions and is applicable to a wide range of scenarios like combat information analysis and live streaming.
Approach: They propose a generative system for in-battle real-time commentary in mobile MOBA games and propose 'transform' method to convert match statistics and utterances into consistent encoding space.
Outcome: The proposed system is based on real-time match statistics and events and can be used for live streaming, e-sports commentary and combat information analysis.
Curriculum Consistency Learning for Conditional Sentence Generation (2024.emnlp-main)

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Challenge: Consistency learning (CL) has proven to be a valuable technique for improving the robustness of conditional sentence generation models.
Approach: They propose a strategy that guides models to learn consistency in alignment with their current capacity to differentiate between features.
Outcome: The proposed strategy delivers +2.0 accuracy point improvement compared with vanilla IT and +0.7 COMET scores over traditional CL methods in MT tasks.
Agentic Reasoning: A Streamlined Framework for Enhancing LLM Reasoning with Agentic Tools (2025.acl-long)

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Challenge: Existing reasoning methods excel in structured domains like math and code, but they are not all effective in knowledge-intensive tasks.
Approach: They introduce a framework that enhances large language model reasoning by integrating external tool-using agents.
Outcome: The proposed framework achieves state-of-the-art among public models and delivers comparable performance to OpenAI Deep Research.
GUI-explorer: Autonomous Exploration and Mining of Transition-aware Knowledge for GUI Agent (2025.acl-long)

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Challenge: GUI automation is a key challenge in dynamic environments.
Approach: They propose a training-free GUI agent that integrates two mechanisms to explore trajectories in GUIs.
Outcome: The proposed GUI-explorer shows significant improvements over existing agents.
Take Off the Training Wheels! Progressive In-Context Learning for Effective Alignment (2024.emnlp-main)

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Challenge: Recent studies have explored the working mechanisms of In-Context Learning (ICL) however, they mainly focus on classification and simple generation tasks, limiting their broader application to more complex generation tasks in practice.
Approach: They propose an efficient Progressive In-Context Alignment method that embeds the task function learned from demonstrations into the separator token representation.
Outcome: The proposed method surpasses vanilla ICL and achieves comparable performance to other alignment tuning methods.
Scene Graph as Pivoting: Inference-time Image-free Unsupervised Multimodal Machine Translation with Visual Scene Hallucination (2023.acl-long)

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Challenge: Current neural machine translation (NMT) relies on parallel sentences, which obstructs the development of NMT for minor languages.
Approach: They propose an unsupervised multimodal machine translation setup where the model is trained with source-text image pairs and tested with only source- text inputs.
Outcome: The proposed model outperforms the baseline model on the task and setup, helping yield translations with better completeness, relevance and fluency without relying on paired images.
Act-Adaptive Margin: Dynamically Calibrating Reward Models for Subjective Ambiguity (2026.acl-long)

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Challenge: Existing approaches to reward modeling in reinforcement learning tasks are limited when dealing with ambiguous preferences.
Approach: They propose to use AAM to dynamically calibrate preference margins using the Bradley-Terry model's internal parameter knowledge to improve reward modeling in subjective tasks.
Outcome: The proposed approach improves reward modeling by dynamically calibrating preference margins using the model’s internal parameter knowledge.
Beyond the Last Frame: Process-aware Evaluation for Generative Video Reasoning (2026.acl-long)

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Challenge: Existing evaluation frameworks often rely on single-frame assessments, which can lead to outcome-hacking.
Approach: They propose a process-aware evaluation paradigm that uses a hierarchical rubric to evaluate the validity of the intermediate steps and the final result.
Outcome: The proposed model achieves POC@1.0 only about 20% and exhibits significant outcome-hacking.
The Rise of Darkness: Safety-Utility Trade-Offs in Role-Playing Dialogue Agents (2025.findings-acl)

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Challenge: Large Language Models (LLMs) demonstrate their utility in character simulations, but they pose a risk of generating unsafe content.
Approach: They propose a method which dynamically adjusts safety-utility preferences based on the degree of risk coupling and guides the model to generate responses biased toward utility or safety.
Outcome: The proposed method improves safety metrics while maintaining utility.
ARM: An Alignment-and-Replacement Module for Chinese Spelling Check Based on LLMs (2024.emnlp-main)

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Challenge: Chinese Spelling Check (CSC) aims to identify and correct spelling errors in Chinese texts, where enhanced semantic understanding of a sentence can significantly improve correction accuracy.
Approach: They propose a plug-and-play Alignment-and -Replacement module that enhances existing Chinese CSC models without retraining or fine-tuning.
Outcome: The proposed module improves existing models while reducing retraining and fine-tuning.
CDT: A Comprehensive Capability Framework for Large Language Models Across Cognition, Domain, and Task (2025.findings-emnlp)

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Challenge: Existing benchmarks focus on isolated abilities, lacking a holistic framework for assessing LLM capabilities.
Approach: They propose a Cognition-Domain-Task framework which measures a model’s capabilities across three dimensions.
Outcome: The proposed framework improves performance on dataset evaluation and data selection, while achieving higher scores on general and specific benchmarks.
Covariance Matrix-Driven Image Channel Allocation for Multimodal Fake News Detection (2026.findings-acl)

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Challenge: Existing methods focus on designing efficient multimodal fusion frameworks to bridge the semantic gap between images and texts.
Approach: They propose a covariance matrix-driven image channel allocation method that expands the number of original channel maps and assigns importance scores to the expanded channel maps.
Outcome: The proposed method achieves state-of-the-art on three public multimodal fake news detection benchmark datasets.
BrainECHO: Semantic Brain Signal Decoding through Vector-Quantized Spectrogram Reconstruction for Whisper-Enhanced Text Generation (2025.findings-acl)

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Challenge: Current EEG/MEG-to-text decoding systems rely on teacher-forcing methods . pre-trained large language models are over-dominant in decoding text from brain activity .
Approach: They propose a framework that employs decoupled representation learning to achieve state-of-the-art performance on EEG and MEG datasets.
Outcome: The proposed framework achieves state-of-the-art performance on EEG and MEG datasets.
CLaSp: In-Context Layer Skip for Self-Speculative Decoding (2025.acl-long)

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Challenge: Existing methods for drafting Large Language Models require additional modules to be trained, which can be challenging to implement and ensure compatibility across various LLMs.
Approach: They propose an in-context layer-skipping strategy for self-speculative decoding that uses a plug-and-play mechanism to skip intermediate layers of the verify model to construct a compressed draft model.
Outcome: The proposed method achieves a speedup of 1.3 1.7 on LLaMA3 series models without altering the original distribution of the generated text.
Open Domain Question Answering with Conflicting Contexts (2025.findings-naacl)

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Challenge: Open domain question answering systems often rely on information retrieved from large collections of text to answer questions.
Approach: They evaluate and benchmark three powerful Large Language Models with a dataset . they find that 25% of unambiguous open domain questions can lead to conflicting contexts .
Outcome: The proposed model can't be used to answer questions with conflicting contexts . it can be fine tuned to provide richer information into the model's training .
Can LLMs Learn Uncertainty on Their Own? Expressing Uncertainty Effectively in A Self-Training Manner (2024.emnlp-main)

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Challenge: Large language models (LLMs) exhibit excessive, random, and uninformative uncertainty rendering them unsuitable for decision-making in human-computer interactions.
Approach: They propose an uncertainty-aware instruction tuning method that aligns LLMs’ perception with the probabilistic uncertainty of the generation.
Outcome: The proposed method improves LLMs' performance by 45.2%, with reasonably good out-of-domain generalization capabilities.
Who Wrote This? The Key to Zero-Shot LLM-Generated Text Detection Is GECScore (2025.coling-main)

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Challenge: Existing methods for detecting LLM-generated text require no training data.
Approach: They propose a black-box zero-shot detection approach that calculates the Grammar Error Correction Score for a given text to differentiate between human-written and LLM-generated texts.
Outcome: The proposed method outperforms current state-of-the-art zero-shot and supervised methods, achieving an average AUROC of 98.62% across XSum and Writing Prompts datasets.
PEToolLLM: Towards Personalized Tool Learning in Large Language Models (2025.findings-acl)

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Challenge: Existing tool learning studies focus on general-purpose tool-use capability, but ignore the importance of personalized tool-user preferences.
Approach: They propose a framework to adapt Large Language Models to personalized tool learning task, which is trained through supervised fine-tuning and direct preference optimization.
Outcome: Extensive experiments on PEToolBench show that the proposed framework outperforms existing LLMs in the personalized tool learning task.
Structured Preference Optimization for Vision-Language Long-Horizon Task Planning (2025.emnlp-main)

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Challenge: Existing vision-language planning methods struggle with long-horizon reasoning in dynamic environments due to the difficulty of training models to generate high-quality reasoning processes.
Approach: They propose a framework that enhances reasoning and action selection for long-horizon task planning through structured evaluation and optimized training.
Outcome: The proposed framework outperforms existing methods on short-horizon tasks but struggles with long-horizon reasoning in dynamic environments.
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.
Towards IP Intelligence: Benchmarking Large Language Models on Intellectual Property Knowledge and Practice (2026.findings-acl)

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Challenge: Existing datasets and benchmarks focus only on patents or cover limited aspects of the IP field, lacking alignment with real-world scenarios.
Approach: They propose a bilingual IP task taxonomy and a large-scale bilingual benchmark to evaluate LLMs in real-world IP practice.
Outcome: The proposed model achieves only 75.8% accuracy, indicating room for improvement . open-source IP and law-oriented models lag behind closed-source general-purpose models .
Pay More Attention to Relation Exploration for Knowledge Base Question Answering (2023.findings-acl)

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Challenge: Existing approaches focus on entity representation and final answer reasoning, which results in limited supervision for this task.
Approach: They propose a framework that utilizes relations to enhance entity representation and introduce additional supervision.
Outcome: The proposed framework improves the F1 score on two benchmark datasets by 5.8% . it improves by 6.7% on WebQSP, better than state-of-the-art methods .
Neural Parameter Search for Slimmer Fine-Tuned Models and Better Transfer (2025.acl-long)

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Challenge: Foundational models and their checkpoints have advanced deep learning, boosting performance across applications.
Approach: They propose a method for pruning fine-tuned models by calculating differences between them and original model.
Outcome: The proposed method can improve performance across vision, NLP, and multi-modal benchmarks.
Breaking the Representation Bottleneck of Chinese Characters: Neural Machine Translation with Stroke Sequence Modeling (2022.emnlp-main)

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Challenge: Existing research treats Chinese character as a minimum unit for representation . however, such representation suffers from two bottlenecks: 1) learning bottleneck; 2) parameter bottleneck, each individual character has to be represented by a unique vector.
Approach: They propose a representation method for Chinese characters to break the representation bottlenecks . they map each stroke to a specific Latin character, thus allowing similar Chinese characters .
Outcome: The proposed representation method breaks two representation bottlenecks in Chinese character representation . it maps each stroke to a specific Latin character, thus allowing similar Chinese characters to have similar representations .
LycheeCluster: Efficient Long-Context Inference with Structure-Aware Chunking and Hierarchical KV Indexing (2026.findings-acl)

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Challenge: Existing retrieval-based methods compromise semantic integrity through fixed-size chunking and suffer from inefficient linear scanning.
Approach: They propose a method that preserves local semantic coherence through boundary-aware chunking and constructs a recursive hierarchical index rooted in the triangle inequality.
Outcome: The proposed method achieves 3.6 end-to-end inference speedup with negligible degradation in model performance.
Adaptive Detoxification: Safeguarding General Capabilities of LLMs through Toxicity-Aware Knowledge Editing (2025.findings-acl)

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Challenge: Existing knowledge editing methods for large language models (LLMs) suffer from over-editing, where detoxified models reject legitimate queries, compromising overall performance.
Approach: They propose a toxicity-aware knowledge editing approach that dynamically detects toxic activation patterns during forward propagation and then routes computations through adaptive inter-layer pathways to mitigate toxicity effectively.
Outcome: The proposed method outperforms existing methods on large language models and enhances the SafeEdit benchmark.
D-QRELO: Training- and Data-Free Delta Compression for Large Language Models via Quantization and Residual Low-Rank Approximation (2026.findings-acl)

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Challenge: Existing methods for fine-tuned large language models fail on fine-scale datasets . large data scale amplifies delta parameter magnitude, singular values, and entropy, causing compression errors.
Approach: They propose a training- and data-free delta compression method that captures dominant delta structure and compensates residual low-rank approximation to recover fine-grained details from smaller residual error.
Outcome: The proposed method outperforms existing methods on large-scale datasets on dense and MoE architectures.
ODE Transformer: An Ordinary Differential Equation-Inspired Model for Sequence Generation (2022.acl-long)

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Challenge: Residual networks are an Euler discretization of solutions to Ordinary Differential Equations (ODE).
Approach: They propose a residual block of layers in Transformer that can be described as a higher-order solution to ODE.
Outcome: The proposed architecture can gain large improvements over strong baselines at a slight cost in inference efficiency.
Domain-Aware k-Nearest-Neighbor Knowledge Distillation for Machine Translation (2024.findings-acl)

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Challenge: Existing methods to transfer knowledge from kNN datastore into new models are expensive and arbitrarily transfer knowledge.
Approach: They propose a domain-aware method which filters out domain-relevant neighborhood knowledge for learning in the distillation process.
Outcome: The proposed method achieves state-of-the-art on four domain translation tasks.
Sailor: Open Language Models for South-East Asia (2024.emnlp-demo)

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Challenge: Large language models (LLMs) rely on English data for training, but are often not comparable across other languages.
Approach: They propose to develop a family of open language models for SEA languages . they use BPE dropout, aggressive data cleaning and deduplication to improve model robustness .
Outcome: The proposed models perform well across four benchmarks, including commonsense reasoning, question answering, reading comprehension and examination.
An Empirical Study on Multiple Information Sources for Zero-Shot Fine-Grained Entity Typing (2021.emnlp-main)

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Challenge: Auxiliary information from multiple sources has been demonstrated to be effective in zero-shot fine-grained entity typing (ZFET) however, there is no comprehensive understanding of how to make better use of the existing information sources and how they affect the performance of ZFET.
Approach: They propose a multi-source fusion model targeting auxiliary information from multiple sources to improve zero-shot fine-grained entity typing (ZFET)
Outcome: The proposed model achieves 11.42% and 22.84% gains over state-of-the-art baselines on BBN and Wiki respectively with regard to macro F1 scores.
TransGEC: Improving Grammatical Error Correction with Translationese (2023.findings-acl)

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Challenge: Experimental results show that data augmentation improves accuracy over strong baselines.
Approach: They propose to use translationese as input for GEC data augmentation to overcome stylistic discrepancies . they propose to obtain human-translated texts with a more similar style to non-native texts .
Outcome: The proposed method improves correction accuracy over strong baselines on four GEC benchmarks.
Learning from Cognition: Enhancing RL Efficiency for LLM Reasoning via Hierarchical Metacognitive Decomposition and Refinement (2026.acl-long)

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Challenge: Recent advances in Large Language Models have demonstrated notable inferential capacities via reinforcement learning (RL) however, “zero-RL” approaches relying on fixed prompt templates introduce substantial sampling inefficiencies for weak LLMs.
Approach: They propose a hierarchical metacognitive RL framework that decomposes zero-accuracy problems into subproblems and prompts the policy to refine answers by referencing previous wrong solutions.
Outcome: The proposed framework improves sample utilization and sample efficiency and accelerates convergence compared to baselines.
Self-Distillation with Meta Learning for Knowledge Graph Completion (2022.findings-emnlp)

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Challenge: Existing knowledge graph completion frameworks for knowledge graphs are far from complete and require missing triples to be added to them.
Approach: They propose a dynamic pruning technique to obtain a pruned model from a large source model, where the pruning mask of the pruned models could be updated adaptively per epoch after the model weights are updated.
Outcome: The proposed framework achieves competitive performance compared to strong baselines, while being 10x smaller than baselines.
Think Faster Than Words: Efficient LLM Chain-of-Thought Reasoning via Dynamic Shortcut Decoding (2026.acl-long)

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Challenge: Existing methods that prune or employ early stopping to reduce latency often compromise reasoning reliability.
Approach: They propose a shortcut decoding framework that integrates probes over internal hidden states with step-level entropy to detect convergence of reasoning during generation and adaptively selects between a fast-exit path and a stability-verified path to remove redundant steps while preserving answer correctness.
Outcome: The proposed framework reduces token usage by approximately 35% and maintains accuracy comparable to full CoT decoding.
DRPruning: Efficient Large Language Model Pruning through Distributionally Robust Optimization (2025.acl-long)

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Challenge: Structured pruning reduces model size but often causes uneven degradation across domains, leading to biased performance.
Approach: They propose a method that dynamically adjusts the data distribution during training to restore balanced performance across heterogeneous and multi-tasking data.
Outcome: Experiments in monolingual and multilingual settings show that the proposed method surpasses similarly sized models in pruning and continued pretraining over perplexity, downstream tasks, and instruction tuning.
A Pilot Study on Dialogue-Level Dependency Parsing for Chinese (2023.findings-acl)

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Challenge: Dialogue-level dependency parsing has received insufficient attention, especially for Chinese.
Approach: They propose a signal-based method to transform seen syntactic dependencies into unseen ones between elementary discourse units (EDUs) they apply single-view and multi-view data selection to access reliable pseudo-labeled instances.
Outcome: The proposed method transforms seen syntactic dependencies into unseen ones between elementary discourse units (EDUs) the proposed method also provides reliable pseudo-labeled instances.
ConsistTL: Modeling Consistency in Transfer Learning for Low-Resource Neural Machine Translation (2022.emnlp-main)

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Challenge: Existing transfer learning methods for low-resource NMT are static, which simply transfer knowledge from a parent model to a child model once via parameter initialization.
Approach: They propose a transfer learning method that can continuously transfer knowledge from the parent model during the training of the child model.
Outcome: The proposed method can transfer knowledge from the parent model to the child model during the training of the child.
Augmenting Multi-Agent Communication with State Delta Trajectory (2025.emnlp-main)

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Challenge: Multi-agent systems based on large language models (LLMs) have shown to be effective in downstream tasks.
Approach: They propose a protocol that transfers both natural language tokens and token-wise state transition trajectory from one agent to another.
Outcome: The proposed protocol can transfer both natural language tokens and token-wise state transition trajectory from one agent to another.
APT: Improving Specialist LLM Performance with Weakness Case Acquisition and Iterative Preference Training (2025.findings-acl)

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Challenge: Large Language Models often require domain-specific fine-tuning to address targeted tasks, which risks degrading their general capabilities.
Approach: They propose to use self-generated dis-preferred weakness data to enhance model performance with a targeted training approach that minimizes interference with existing knowledge base.
Outcome: The proposed approach ensures no reduction in generic capacity and achieves superior performance on downstream tasks compared to existing methods.
Towards More Realistic Chinese Spell Checking with New Benchmark and Specialized Expert Model (2024.lrec-main)

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Challenge: Large Language Models (LLMs) have been gaining attention for their ability to perform a wide range of open-domain tasks . however, the performance of LLMs has yet to be comprehensively evaluated in realistic scenarios .
Approach: They propose a task to evaluate the performance of Large Language Models (LLMs) they propose RCSC task to convert Chinese text into correct text .
Outcome: The proposed task evaluates the performance of existing methods in Chinese text . the realistic Chinese spell checker can achieve state-of-the-art performance on the task .
Revisiting Demonstration Selection Strategies in In-Context Learning (2024.acl-long)

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Challenge: Large language models (LLMs) have shown an impressive ability to perform a wide range of tasks using in-context learning (ICL).
Approach: They propose a data- and model-dependent method to select models using in-context learning, TopK + ConE, and propose unified explanations for the effectiveness of previous methods.
Outcome: The proposed method improves language understanding and generation tasks with different model scales.
One-Shot Learning as Instruction Data Prospector for Large Language Models (2024.acl-long)

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Challenge: Contemporary practices in instruction tuning often hinge on enlarging data scaling without a clear strategy for ensuring data quality.
Approach: They propose a method that leverages one-shot learning to discern and select high-quality instruction data from extensive datasets.
Outcome: Nuggets outperforms existing methods on MT-Bench and Alpaca-Eval benchmarks.
Part Represents Whole: Improving the Evaluation of Machine Translation System Using Entropy Enhanced Metrics (2022.findings-aacl)

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Challenge: Existing machine translation metrics have poor correlations with human assessments . entropy-based evaluations are often limited to a limited number of samples .
Approach: They propose a fast and unsupervised approach to enhance machine translation metrics using entropy by introducing sentence-level difficulty.
Outcome: The proposed method outperforms existing metrics on five sub-tracks in the WMT19 Metrics shared tasks.
Revisiting Commonsense Reasoning in Machine Translation: Training, Evaluation and Challenge (2023.acl-long)

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Challenge: CR is the ability to understand and navigate the world using basic knowledge and understanding shared by most people.
Approach: They propose to incorporate pretrained knowledge into NMT models and use them as robust testbeds for investigating CR in NMT.
Outcome: The proposed method improves the training of NMT models with high CR abilities and provides accurate evaluation metrics.
Understanding the RoPE Extensions of Long-Context LLMs: An Attention Perspective (2025.coling-main)

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Challenge: Enabling LLMs to handle lengthy context is currently a research hotspot . a notable challenge limiting further customization is the inability of LLM to utilize context beyond pretrained length due to the inherent flaw of rotary position embedding (RoPE).
Approach: They propose to extend the RoPE from an attention perspective and on two benchmarking tasks.
Outcome: The proposed extension of the RoPE improves extrapolation and retrieval errors.
Can MLLMs Understand the Deep Implication Behind Chinese Images? (2025.acl-long)

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Challenge: MLLMs perform poorly on traditional culture images, indicating limitations in understanding high-level semantics and lacking a deep knowledge base of Chinese traditional culture.
Approach: They propose to use Chinese images to assess MLLMs' higher-order perception and understanding of Chinese visual content.
Outcome: The proposed model incorporates images that represent Chinese traditional culture, such as famous Chinese traditional paintings, to ensure the authenticity of the Chinese context.
UniMoE-Audio: Unified Speech and Music Generation with Dynamic-Capacity Mixture-of-Experts (2026.acl-long)

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Challenge: Recent advances in unified multimodal models indicate a clear trend towards comprehensive content generation.
Approach: They propose a unified speech and music generation model built upon a novel framework . they propose specialized MoE architectures and curated training strategies to tackle data imbalances .
Outcome: The proposed model achieves state-of-the-art performance on major speech and music generation benchmarks.
Dual Dynamic Memory Network for End-to-End Multi-turn Task-oriented Dialog Systems (2020.coling-main)

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Challenge: Existing task-oriented dialog systems struggle to dynamically model long dialog context for interactions and effectively incorporate knowledge base (KB) information into dialog generation.
Approach: They propose a dual dynamic memory network for multi-turn dialog generation . the model dynamically expands the dialog memory turn by turn and keeps track of dialog history .
Outcome: The proposed model outperforms baseline models on three benchmark datasets on human evaluation and automatic evaluation.
TP-Link: Fine-grained Pre-Training for Text-to-SQL Parsing with Linking Information (2024.lrec-main)

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Challenge: Existing pre-training frameworks for text-to-SQL parsing have shown inherent differences in distributions between tables and plain text.
Approach: They propose a framework to improve context-dependent Text-to-SQL parsing by leveraging Linking information.
Outcome: The proposed framework achieves state-of-the-art performance on two leading downstream benchmarks.
From Role-Play to Drama-Interaction: An LLM Solution (2024.findings-acl)

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Challenge: aristotle defined drama as a form of storytelling that involves a predefined storyline, emotions and thoughts.
Approach: They propose to use LLMs to create an immersive mode of storytelling . they propose to create a backbone drama LLM to drive the playing process .
Outcome: The proposed model can be used to drive the playing process, the authors say . it can be compared with existing models and can be evaluated on multiple scenarios.
Adversarial Semantic Decoupling for Recognizing Open-Vocabulary Slots (2020.emnlp-main)

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Challenge: Open-vocabulary slots degrade neural-based slot filling models because they can take on unlimited set of values and have no semantic restriction nor length limit.
Approach: They propose a model-agnostic slot filling method that explicitly decouples local semantics inherent in open-vocabulary slot words from the global context.
Outcome: The proposed method outperforms other models on open-vocabulary slots without deteriorating performance.
Fair-CCD: Mitigating Bias in Large Language Models for Tabular Classification Through Context-Contrastive Decoding (2026.acl-long)

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Challenge: Prior work to mitigate fairness issues often employs subjective demonstration selection, leading to low controllability and limited stability across different models and tasks.
Approach: They propose to use in-context learning to insert social biases into large language models to create a structured and controllable representation of the relationship between sensitive attributes and predicted labels.
Outcome: Extensive experiments show that Fair-CCD consistently improves fairness metrics without degrading task accuracy.
Multi-Modality Expansion and Retention for LLMs through Parameter Merging and Decoupling (2025.acl-long)

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Challenge: Large Language Models (LLMs) are a cornerstone in artificial intelligence due to their exceptional performance.
Approach: They propose a training-free approach that integrates existing MLLMs for effective multimodal expansion while retaining their original performance.
Outcome: The proposed approach can expand LLMs' multimodal capabilities while retaining original performance.
OpenResearcher: Unleashing AI for Accelerated Scientific Research (2024.emnlp-demo)

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Challenge: Global scientific publications are growing annually by about 4%-5% (Pinedo et al., 2024).
Approach: They introduce an AI-assisted platform that answers diverse questions from researchers using Retrieval-Augmented Generation (RAG) they develop various tools to understand queries, search from the scientific literature, filter retrieved information, provide accurate and comprehensive answers, and self-refine answers.
Outcome: OpenResearcher is built on Retrieval-Augmented Generation (RAG) to integrate Large Language Models (LLMs) with up-to-date, domain-specific knowledge.
Task-aware Contrastive Mixture of Experts for Quadruple Extraction in Conversations with Code-like Replies and Non-opinion Detection (2025.emnlp-main)

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Challenge: Applying Large Language Models (LLMs) for this specific task presents two primary challenges: the accurate extraction of multiple elements and the understanding of complex dialogue reply structure.
Approach: They propose a novel LLM-based multi-task approach to extract sentiment quadruples from conversations by integrating expert-level contrastive loss within task-oriented mixture of experts layer.
Outcome: The proposed method outperforms existing fine-tuning techniques in terms of accuracy and computational efficiency.
Aspect and Sentiment Aware Abstractive Review Summarization (C18-1)

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Challenge: Abstractive summarization is a task that generates short and concise summaries of user generated reviews.
Approach: They propose an interactive attention mechanism to learn the representations of context and aspect words within reviews, acted as an encoder.
Outcome: The proposed model achieves impressive results compared to other strong competitors on a real-life dataset.
Multi-Turn Dialogue Generation in E-Commerce Platform with the Context of Historical Dialogue (2020.findings-emnlp)

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Challenge: Existing research on customer service dialogue generation generates generic responses from sellers . however, such cost prohibits small businesses, and multiturn dialogue generation is becoming more popular.
Approach: They propose a novel and extensible dialogue generation method by leveraging sellers’ historical dialogue information to generate generic seller responses.
Outcome: The proposed model can generate high-quality responses that cater to specific sellers’ characteristics and exhibit consistent superiority over baselines on a real-world multi-turn customer service dialogue dataset.
PromptST: Abstract Prompt Learning for End-to-End Speech Translation (2023.emnlp-main)

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Challenge: Experimental results show that PromptST can improve speech-to-text translation by capturing richer linguistic knowledge.
Approach: They propose a plug-in prompt-enhanced S2T model that captures richer linguistic knowledge . they use a 10GB linguistic probing benchmark to investigate the fusion of speech and text features .
Outcome: The proposed model can improve on a strong baseline by capturing richer linguistic knowledge.
LLMs as World Models: Data-Driven and Human-Centered Pre-Event Simulation for Disaster Impact Assessment (2025.emnlp-main)

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Challenge: Recent advances in large language models (LLMs) show promise in simulating complex scenarios.
Approach: They examine multiple LLMs to proactively estimate perceived earthquake impacts using multimodal datasets and multimodal imagery.
Outcome: The framework generates Modified Mercalli Intensity (MMI) predictions at zip code and county scales using multimodal datasets.
SeaPO: Strategic Error Amplification for Robust Preference Optimization of Large Language Models (2025.findings-emnlp)

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Challenge: Existing methods for preference optimization of large language models use pairs of positive and negative samples, but the quality of positive samples may become similar during training, complicating preference learning.
Approach: SeaPO introduces error types commonly occurring in large language models to improve preference learning.
Outcome: SeaPO introduces error types into model Preference Optimization to improve model performance . negative samples are more erroneous than positive samples, and preference-based training mitigates errors .
HealMe: Harnessing Cognitive Reframing in Large Language Models for Psychotherapy (2024.acl-long)

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Challenge: Large Language Models (LLMs) can be used in psychotherapy to overcome challenges such as shame, distrust, and resource scarcity.
Approach: They propose a cognitive reframing therapy method that uses empathetic dialogue to address deep-rooted negative thoughts and fosters rational, balanced perspectives.
Outcome: The proposed model outperforms other models in terms of empathy, guidance, and logical coherence, demonstrating its effectiveness and potential positive impact on psychotherapy.
Bridging the Domain Gaps in Context Representations for k-Nearest Neighbor Neural Machine Translation (2023.acl-long)

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Challenge: Existing methods to improve k-Nearest neighbor machine translation (kNN-MT) are based on the ability to non-parametrically adapt to new domains.
Approach: They propose a method to boost the datastore retrieval of k-Nearest neighbor machine translation by reconstructing the original datastore.
Outcome: The proposed method boosts the retrieval and translation quality of k-Nearest neighbor machine translation by reconstructing the original datastore.
Marathon: A Race Through the Realm of Long Context with Large Language Models (2024.acl-long)

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Challenge: Existing long-context benchmarks do not accurately evaluate large language models’ comprehension and reasoning abilities in extended texts.
Approach: They propose a new evaluation benchmark that adopts a multiple-choice question format and uses a multi-choke question format to assess the comprehension and reasoning skills of large language models.
Outcome: The proposed benchmark provides a rapid, precise, and unbiased appraisal of the long-context comprehension skills of large language models.
Multi-perspective Coherent Reasoning for Helpfulness Prediction of Multimodal Reviews (2021.acl-long)

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Challenge: Existing review helpfulness prediction tasks rely on text and image modalities to analyze review helpfuliness.
Approach: They propose a task to analyze review helpfulness from text and visual modalities and propose 'multi-perspective coherent reasoning' method to combine coherence between product and review is proposed.
Outcome: The proposed method can lead to performance increase of 8.5% compared to the best performing text-only model.
Cross-lingual Machine Reading Comprehension with Language Branch Knowledge Distillation (2020.coling-main)

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Challenge: Cross-lingual Machine Reading Comprehension (CLMRC) is a challenging problem due to the lack of large-scale annotated datasets in low-source languages, such as Arabic, Hindi, and Vietnamese.
Approach: They propose a novel approach to augment cross-lingual machine reading comprehension by combining knowledge from multiple language branch models into a single model for all target languages.
Outcome: Extensive experiments on two CLMRC benchmarks show the proposed method is effective and robust to data noises.
One vs. Many QA Matching with both Word-level and Sentence-level Attention Network (C18-1)

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Challenge: Existing studies on question answer matching focus on formal text . however, there exists many scenarios where the QA text is informal .
Approach: They propose a novel QA matching approach using informal text from a product review site.
Outcome: The proposed approach improves word-level and sentence-level attentions for solving the noisy problem in the informal text.
Efficient k-Nearest-Neighbor Machine Translation with Dynamic Retrieval (2024.findings-acl)

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Challenge: Existing models for non-parametric domain adaptation lack kNN retrieval at each timestep, leading to substantial time overhead.
Approach: They propose a kNN-MT-based model that uses a domain-specific translation knowledge store to interpolate the prediction distribution of the model.
Outcome: The proposed model significantly extends kNN-MT with dynamic retrieval on widely-used datasets.
GenWebNovel: A Genre-oriented Corpus of Entities in Chinese Web Novels (2025.coling-main)

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Challenge: Existing literature on nested entity recognition is insufficient partly due to insufficient annotated data.
Approach: They propose a method that utilizes a pre-trained language model as an In-context learning example retriever to boost the performance of large language models.
Outcome: The proposed method significantly enhances entity recognition, matching state-of-the-art (SOTA) models without additional training data.
Selective Preference Optimization via Token-Level Reward Function Estimation (2025.emnlp-main)

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Challenge: Existing methods for maximizing preference optimization on all available tokens are noisy and inefficient.
Approach: They propose a selective alignment strategy that centers on efficient key token selection without strong, fine-grained supervision signals.
Outcome: The proposed strategy outperforms baseline methods on three benchmarks with up to 60% reduction in training hours.
Aspect Sentiment Classification Towards Question-Answering with Reinforced Bidirectional Attention Network (P19-1)

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Challenge: Existing studies on aspect sentiment classification focus on non-interactive reviews . a new task aims to predict sentiment polarities for specific aspects from interactive reviews based on annotated corpus .
Approach: They propose a task to predict aspects from interactive QA style reviews using an annotated corpus.
Outcome: The proposed approach is compared with state-of-the-art methods against a high-quality corpus of data.
Towards Demonstration-Aware Large Language Models for Machine Translation (2024.findings-acl)

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Challenge: Large language models for machine translation often face difficulties in leveraging demonstrations to further improve their performance.
Approach: They propose a novel approach that integrates demonstration-aware training and inference strategies within the framework of tuning-based LTMs.
Outcome: The proposed model integrates demonstration-aware training and inference strategies within tuning-based LTMs.
RAG-QA Arena: Evaluating Domain Robustness for Long-form Retrieval Augmented Question Answering (2024.emnlp-main)

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Challenge: Existing datasets for question answering based on retrieval augmented generation (RAG-QA) are either constructed using a single source corpus or consist of short extractive answers, which fall short of evaluating large language model (LLM) based RAG-QA systems on cross-domain generalization.
Approach: They propose a dataset that integrates short extractive answers from multiple documents into a single coherent narrative.
Outcome: The proposed dataset integrates short extractive answers from multiple documents into a single coherent narrative, covering 26K queries and large corpora across seven different domains.
Bridging the Gap between Training and Inference: Multi-Candidate Optimization for Diverse Neural Machine Translation (2022.findings-naacl)

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Challenge: Existing diverse NMT models lack translation diversity due to a discrepancy between training and inference . despite the success of diverse NTM, there is still a lack of translation diversity .
Approach: They propose a multi-candidate optimization framework for diverse NMT to deal with this defect.
Outcome: The proposed framework is transparent to basic diverse NMT models, and universally makes better trade-off between diversity and quality.
STORYTELLER: An Enhanced Plot-Planning Framework for Coherent and Cohesive Story Generation (2025.findings-acl)

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Challenge: Existing methods for storytelling lack coherence and consistency, compromising the overall storytelling experience.
Approach: They propose a novel approach that improves the coherence and consistency of automatically generated stories by managing plot nodes and enabling dynamic interactions between different parts of the story.
Outcome: The proposed approach outperforms existing methods in 84.33% of the trials.
kNN-TL: k-Nearest-Neighbor Transfer Learning for Low-Resource Neural Machine Translation (2023.acl-long)

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Challenge: Transfer learning is an effective technique for enhancing low-resource neural machine translation (NMT) however, these methods do not make use of the parent knowledge during the child inference, which may limit the translation performance.
Approach: They propose a k-Nearest-Neighbor Transfer Learning approach which leverages the parent knowledge throughout the entire developing process of the child model.
Outcome: The proposed approach outperforms strong baselines on four low-resource translation tasks.
Revisiting Grammatical Error Correction Evaluation and Beyond (2022.emnlp-main)

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Challenge: Pretraining-based (PT) evaluation metrics are not effective for training grammatical error correction systems.
Approach: They propose a pretraining-based GEC evaluation metric which only uses PT-based metrics to score the corrected parts of the system.
Outcome: The proposed evaluation metric outperforms existing methods on a CoNLL14 evaluation task.
3AM: An Ambiguity-Aware Multi-Modal Machine Translation Dataset (2024.lrec-main)

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Challenge: Existing studies have shown that visual information in existing MMT datasets is insufficient, causing models to disregard it and overestimate their capabilities.
Approach: They propose to use 3AM to create an ambiguity-aware multimodal machine translation dataset.
Outcome: The proposed dataset includes more ambiguity and a greater variety of captions and images than other MMT datasets.
Medico: Towards Hallucination Detection and Correction with Multi-source Evidence Fusion (2024.emnlp-demo)

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Challenge: Existing studies show that LLMs can confidently state non-existent facts rather than answering "I don't know".
Approach: They propose a multi-source evidence fusion enhanced hallucination detection and correction framework that fuses evidence from multiple sources and iteratively revises the hallucinous content.
Outcome: The proposed framework detects whether the generated content contains factual errors, provides the rationale behind the judgment, and iteratively revises the hallucinated content.
Speech Sense Disambiguation: Tackling Homophone Ambiguity in End-to-End Speech Translation (2024.acl-long)

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Challenge: End-to-end speech translation (ST) models require simultaneous crossmodal and crosslingual transformations to be effective.
Approach: They propose a homophone-aware contrastive learning approach that integrates a speech-text masking strategy to reduce ambiguity.
Outcome: The proposed approach achieves SOTA results on BLEU scores on different MuST-C and CoVoST ST tasks, underlining its effectiveness in reducing speech sense ambiguity.
TasTe: Teaching Large Language Models to Translate through Self-Reflection (2024.acl-long)

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Challenge: Existing approaches to enhance LLMs' performance in machine translation are unable to fully exploit their instruction-following capabilities.
Approach: They propose a framework for translating through self-reflection that involves two stages of inference . they propose to use the framework to refine LLMs' preliminary translations .
Outcome: The proposed framework can produce translation outputs that match the quality of NMT systems.
Improving Seq2Seq Grammatical Error Correction via Decoding Interventions (2023.findings-emnlp)

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Challenge: Existing approaches to grammatical error correction (GEC) are sequence-to-sequence and sequence-edit.
Approach: They propose a unified decoding intervention framework that employs an external critic to assess the appropriateness of the token to be generated incrementally.
Outcome: The proposed framework outperforms baselines and state-of-the-art methods on English and Chinese datasets.
Long Context is Not Long at All: A Prospector of Long-Dependency Data for Large Language Models (2024.acl-long)

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Challenge: Long-context modeling capabilities are important for large language models (LLMs) however, training LLMs with long context windows is insufficient since some samples do not exhibit strong semantic dependencies across long contexts.
Approach: They propose a data mining framework ProLong that assigns each training sample with a long dependency score and ranks and filters them according to their results.
Outcome: The proposed framework can rank and filter training samples that exhibit more powerful long-context modeling abilities.
Sentiment Classification towards Question-Answering with Hierarchical Matching Network (D18-1)

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Challenge: Existing methods to classify QA text contain rich sentiment information.
Approach: They propose a task/method to address QA sentiment analysis by annotating QA text pair with annotation guidelines.
Outcome: The proposed method can learn the matching vectors of each Q-sentence, A-sentent unit.
DialogueMMT: Dialogue Scenes Understanding Enhanced Multi-modal Multi-task Tuning for Emotion Recognition in Conversations (2025.coling-main)

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Challenge: Existing ERC methods fail to handle emotional cues from both visual sources and discourse structures due to the complexity of visual scenes and contextual dependencies in conversations.
Approach: They propose a framework for Emotion Recognition in conversations that utilizes multi-task instruction tuning to enhance the model's understanding of multi-modal dialogue scenes.
Outcome: The proposed framework outperforms existing state-of-the-art models on three benchmark ERC datasets and is based on a video-language connector and a chain-of thought strategy.
TemplateGEC: Improving Grammatical Error Correction with Detection Template (2023.acl-long)

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Challenge: Existing methods for grammatical error correction (GEC) have been developed.
Approach: They propose a method which integrates the detection labels from a Seq2Edit model to construct a template as the input.
Outcome: The proposed method can perform human-in-the-loop error correction tasks.
MuCPAD: A Multi-Domain Chinese Predicate-Argument Dataset (2022.naacl-main)

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Challenge: Recent studies show that shallow semantic role labeling (SRL) performance drops under out-of-domain setting.
Approach: They propose to annotate a multi-domain Chinese predicate-argument dataset using a frame-free annotation methodology and strict double annotation for improving data quality.
Outcome: The proposed dataset is compared with a dataset from six different domains.
Redundancy Principles for MLLMs Benchmarks (2025.acl-long)

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Challenge: Rapid growth of Multi-modality Large Language Models has led to significant redundancy among benchmarks.
Approach: They propose a framework to improve MLLM benchmark design by identifying redundancy at three levels: dimension, instance, and cross-benchmark redundancies.
Outcome: The proposed framework streamlines evaluations and enhances reliability.
Clustering Pseudo Language Family in Multilingual Translation Models with Fisher Information Matrix (2023.emnlp-main)

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Challenge: Existing methods to cluster languages based on ancestral families can yield suboptimal results due to variations in the datasets employed during the model’s training phase.
Approach: They propose a method that leverages the fisher information matrix to cluster language families anchored on the multilingual translation model's characteristics.
Outcome: The proposed method improves performance over conventional language families in adapting a multilingual translation model to unfamiliar language pairs.
Pre-trained Language Model with Prompts for Temporal Knowledge Graph Completion (2023.findings-acl)

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Challenge: Existing methods for temporal knowledge graph completion (TKGC) focus on extracting information from timestamps and insufficiently utilizing implied information in relations.
Approach: They propose a temporal knowledge graph completion model with prompts that converts quadruples into pre-trained language inputs and prompts to make coherent sentences with implicit semantic information.
Outcome: The proposed model can make coherent sentences with implicit semantic information.
MelTrim: Coarse-to-Fine Data Pruning for Speech Classification (2026.findings-acl)

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Challenge: Unlike image or text classification, speech classification tasks are particularly challenging due to the difficulty in capturing the acoustic, semantic, and contextual representations.
Approach: They propose a dataset pruning method that coarsely filters redundant samples using DBSCAN clustering on Mel-Frequency Cepstral Coefficients (MFCC) features.
Outcome: The proposed method achieves 49.5% improvement in WA on the MEAD dataset and 41.9% reduction in EER on speaker identification tasks.
RHO: Reducing Hallucination in Open-domain Dialogues with Knowledge Grounding (2023.findings-acl)

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Challenge: Existing knowledge-grounded dialogue systems generate accurate and informative responses, but they are prone to hallucination problems.
Approach: They propose a method to generate hallucinated responses using knowledge graphs . they propose local knowledge grounding to combine textual embeddings with corresponding KG embeddments . a global knowledge ground technique is also proposed to equip RHO with multi-hop reasoning abilities .
Outcome: The proposed approach outperforms state-of-the-art methods on automatic and human evaluation by a large margin.
TInR: Exploring Tool-Internalized Reasoning in Large Language Models (2026.acl-long)

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Challenge: Existing methods rely on external tool documentation during reasoning, leading to tool mastery difficulty, tool size constraints, and inference inefficiency.
Approach: They propose a tool-internalized reasoning framework for unified reasoning and tool usage that integrates external tools into Large Language Models (LLMs) to address these issues, they propose 'tool-internet-based' reasoning.
Outcome: The proposed method achieves superior performance across in-domain and out-of-domain settings, highlighting its effectiveness and efficiency.
Improving the Transformer Translation Model with Document-Level Context (D18-1)

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Challenge: Existing models for document-level context translation ignore documentlevel context.
Approach: They propose a document-level context encoder to represent document- level context and integrate it into the Transformer model.
Outcome: Experiments on NIST Chinese-English and IWSLT French-English datasets show that the proposed translation model outperforms the Transformer model significantly.
ZigZagKV: Dynamic KV Cache Compression for Long-context Modeling based on Layer Uncertainty (2025.coling-main)

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Challenge: Existing methods to accelerate inference of Large Language models (LLMs) are limited in their ability to retain key tokens as input length increases.
Approach: They propose a method that leverages layer uncertainty to allocate budget size for each layer to reduce memory usage.
Outcome: The proposed method reduces memory usage of the KV caches to only 20% when compared to full KV inference while achieving nearly lossless performance.
Unlocking General Long Chain-of-Thought Reasoning Capabilities of Large Language Models via Representation Engineering (2025.acl-long)

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Challenge: Existing work finds that long CoT reasoning can be efficiently elicited by tuning on only a few examples and can easily transfer to other tasks.
Approach: They propose a representation engineering method to unleash the general long CoT reasoning capabilities of LLMs.
Outcome: The proposed method is effective in in-domain and cross-domain scenarios.
AQuilt: Weaving Logic and Self-Inspection into Low-Cost, High-Relevance Data Synthesis for Specialist LLMs (2025.emnlp-main)

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Challenge: Existing approaches to synthesis large language models often suffer from performance limitations and high computational costs.
Approach: They propose a framework for constructing instruction-tuning data from unlabeled data for any specialized domains from corresponding unlabed data.
Outcome: The proposed framework is comparable to DeepSeek-V3 while utilizing just 17% of the production cost.
LLMs + Persona-Plug = Personalized LLMs (2025.acl-long)

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Challenge: Large language models (LLMs) have demonstrated extraordinary capabilities in natural language understanding, generation, and reasoning.
Approach: They propose a plug-and-play LLM model that embeds a user-specific embedding for each individual by modeling her historical contexts through a lightweight plug-in user embedder module.
Outcome: Experiments on various tasks in the language model personalization (LaMP) benchmark show that the proposed model significantly outperforms existing personalized LLM approaches.
Ruler: A Model-Agnostic Method to Control Generated Length for Large Language Models (2024.findings-emnlp)

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Challenge: Large language models struggle to meet user’s needs when required to generate responses of a specific length due to their inherent difficulty in accurately perceiving numerical constraints.
Approach: They propose a Target Length Generation Task and propose RULER, a model-agnostic approach that controls generated length for large language models.
Outcome: The proposed model-agnostic approach improves instruction-following ability of large language models under length-constrained instructions and can generate appropriate MLT when length constraints are not explicitly provided.
Context Consistency between Training and Inference in Simultaneous Machine Translation (2024.acl-long)

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Challenge: Simultaneous machine translation (SiMT) aims to yield a partial translation with a monotonically growing source-side context.
Approach: They propose a training approach that encourages consistent context usage between training and inference by optimizing translation quality and latency as bi-objectives and exposing the predictions to the model during the training.
Outcome: The proposed system outperforms existing SiMT systems with context inconsistency for the first time.
from Benign import Toxic: Jailbreaking the Language Model via Adversarial Metaphors (2025.acl-long)

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Challenge: Recent studies have exposed the risk of Large Language Models (LLMs) generating harmful content by jailbreak attacks.
Approach: They propose a framework that exploits AdVersArial meTAphoR to induce LLMs to calibrate harmful metaphors for jailbreaking.
Outcome: The proposed framework can successfully jailbreak Large Language Models (LLMs) by leveraging the AdVersArial meTAphoR (AVATAR) framework achieves state-of-the-art attack success rate across multiple advanced LLMs.
Quantification of Large Language Model Distillation (2025.acl-long)

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Challenge: Existing studies have revealed the robustness degra-dation caused by data distillation.
Approach: They propose a framework to evaluate and quantify model distillation . they aim to identify identity cognition contradictions and analyse multi-granularity response similarities across models to measure the extent of homogenization.
Outcome: The proposed framework addresses two key aspects: (1) Identifying identity cognition contradictions to assess discrepancies in how models perceive and represent identity-related information; (2) Analyzing multi-granularity response similarities across models to measure the extent of homogenization.
Filter-then-Generate: Large Language Models with Structure-Text Adapter for Knowledge Graph Completion (2025.coling-main)

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Challenge: Empirical evidence suggests that LLMs perform worse than conventional KGC approaches.
Approach: They propose a filter-then-generate paradigm and a multiple-choice question format to harness the capability of LLMs while mitigating the issue casused by hallucinations.
Outcome: The proposed method achieves substantial performance gain compared to existing state-of-the-art methods.
DynamicKV: Task-Aware Adaptive KV Cache Compression for Long Context LLMs (2025.findings-emnlp)

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Challenge: Existing KV cache compression methods enforce a fixed pattern, neglecting task-specific characteristics, which hampers the effective retention of essential information while discarding less important tokens.
Approach: They propose a Task-Aware KV cache mechanism that dynamically adjusts the KV caching size across different layers based on the characteristics of the tasks.
Outcome: The proposed method surpasses state-of-the-art methods by 11% on the LongBench dataset even under extreme compression (0.9%)
COIG-CQIA: Quality is All You Need for Chinese Instruction Fine-tuning (2025.findings-naacl)

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Challenge: Existing datasets for Chinese instruction tuning are not well-aligned with Chinese users’ interaction patterns.
Approach: They propose to use Chinese instruction tuning datasets to improve instruction fine-tuning for Chinese users.
Outcome: The proposed dataset shows that Chinese models achieve competitive performance in diverse benchmarks.
Human-Like Decision Making: Document-level Aspect Sentiment Classification via Hierarchical Reinforcement Learning (D19-1)

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Challenge: Recent neural networks have shown promising results on Document-level Aspect Sentiment Classification (DASC) however, these approaches often offer little transparency w.r.t. their inner working mechanisms and lack interpretability.
Approach: They propose a Hierarchical Reinforcement Learning approach to DASC that incorporates clause selection and word selection strategies to tackle the data noise problem.
Outcome: The proposed approach over the state-of-the-art approaches shows impressive performance over the current baselines.
Has It All Been Solved? Open NLP Research Questions Not Solved by Large Language Models (2024.lrec-main)

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Challenge: Recent advances in large language models have led to misleading public discourse that “it’s all been solved.”
Approach: They identify 14 research areas encompassing 45 research directions that require new research and are not directly solvable by LLMs.
Outcome: The research areas identified are 45 research directions that require new research and are not directly solvable by LLMs.
CoTJudger: A Graph-Driven Framework for Automatic Evaluation of Chain-of-Thought Efficiency and Redundancy in LRMs (2026.findings-acl)

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Challenge: Existing evaluations emphasize final accuracy or coarse token counts, and lack automated tools to separate essential logic from structural redundancy.
Approach: They propose a graph-driven framework that quantifies reasoning efficiency by converting free-form CoTs into directed dependency graphs and extracting the Shortest Effective Path needed to reach a correct solution.
Outcome: Evaluating 21 LRMs, the proposed framework quantifies reasoning efficiency by converting free-form CoTs into directed dependency graphs and extracting the Shortest Effective Path (SEP) needed to reach a correct solution.
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.
Towards Making the Most of ChatGPT for Machine Translation (2023.findings-emnlp)

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Challenge: Prior studies have shown that ChatGPT achieves comparable results to commercial systems for high-resource languages, but lags behind in complex tasks, e.g., low-resourced and distant-language-pairs translation.
Approach: They propose task-specific prompts and domain-specific prompts which are based on task information and domain information and a task-specific prompt.
Outcome: The proposed prompts improve the performance of ChatGPT in complex tasks and generate hallucinations for non-English-centric tasks.
LIME: Less Is More for MLLM Evaluation (2025.findings-acl)

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Challenge: Existing MLLM benchmarks and unified evaluation frameworks cannot accurately and efficiently reflect the ability of MLMLs.
Approach: They propose a semi-automated benchmark curated using a pipeline that filters out uninformative samples and eliminates answer leakage by focusing on tasks that require image-based understanding.
Outcome: The proposed benchmark reduces the number of samples by 76% and evaluation time by 77% while it can more effectively distinguish different models’ abilities.
Revealing Procedural Reasoning Structures in Chain-of-Thought Training via Span-Level Gradient Organization (2026.acl-long)

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Challenge: Chain-of-Thought (CoT) prompts elicit multi-step reasoning, yet how reasoning related structure is expressed during training remains poorly understood.
Approach: They propose a framework that tracks span-level gradients during fine-tuning on reasoning benchmarks to understand how models develop structured, step-by-step reasoning capabilities.
Outcome: The proposed framework tracks span-level gradients during fine-tuning on reasoning benchmarks to understand how models develop structured, step-by-step reasoning capabilities.
CiteEval: Principle-Driven Citation Evaluation for Source Attribution (2025.acl-long)

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Challenge: Current evaluation frameworks rely on NLI to assess binary or ternary support from cited sources, which is suboptimal for citation evaluation.
Approach: They propose a citation evaluation framework based on fine-grained citation ratings within a broad context and construct a multi-domain benchmark with high-quality human annotations.
Outcome: The proposed framework provides a high-quality human annotation benchmark and a suite of model-based metrics that exhibit strong correlation with human judgments.
The Digital Dunning-Kruger Effect: Decoupling Hallucinations via Geometric Hidden-state Observation for Semantic Truthfulness (2026.acl-long)

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Challenge: Large Language Models (LLMs) often generate overconfident yet factually incorrect hallucinations.
Approach: They propose a black-box-based framework that captures stubborn hallucinations by integrating internal geometric dynamics with output probability distributions.
Outcome: The proposed framework outperforms white-box methods and reduces computational overhead by over 90%.
Speed Up Your Code: Progressive Code Acceleration Through Bidirectional Tree Editing (2025.acl-long)

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Challenge: Existing training methods, such as direct instruction fine-tuning, overlook hierarchical relationships among acceleration patterns.
Approach: They propose a new training paradigm that uses bidirectional tree editing and progressive code acceleration learning to improve LLMs’ CA capabilities.
Outcome: The proposed training paradigm outperforms prompt-enhanced GPT-4 and current training-based methods on average across five programming languages.
Test-time Adaptation for Machine Translation Evaluation by Uncertainty Minimization (2023.acl-long)

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Challenge: evaluators of machine translation systems often use text-based metrics to evaluate performance . however, these metrics lack semantic-level information and exhibit poor correlation with human ratings . authors propose a method to reduce inference bias of neural metrics in out-of-distribution data .
Approach: They propose to reduce inference bias by using uncertainty estimation, test-time adaptation, and inference to reduce model uncertainty.
Outcome: The proposed method reduces model uncertainty and improves correlation performance across models.
BatonVoice: An Operationalist Framework for Enhancing Controllable Speech Synthesis with Linguistic Intelligence from LLMs (2026.acl-long)

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Challenge: Existing approaches often fail to leverage the linguistic intelligence of Large Language Models (LLMs) Existing models lack the ability to follow text instructions for controllable Text-to-Speech (TTS).
Approach: They propose a framework where an LLM acts as a conductor, understanding user instructions and generating a textual plan - explicit vocal features.
Outcome: The proposed model outperforms open- and closed-source models in speech synthesis and achieves zero-shot cross-lingual generalization.
Safety Alignment via Constrained Knowledge Unlearning (2025.acl-long)

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Challenge: Existing defense mechanisms have not fully deleted harmful knowledge in large language models (LLMs) Existing methods to address safety alignment have not completely deleted harmful information in LLMs.
Approach: They propose a safety alignment strategy that uses scoring neurons to identify useful knowledge in LLMs and pruning the gradients of neurons in U to preserve beneficial information.
Outcome: The proposed method significantly improves model safety while maintaining utility compared to existing methods.
MAIR: A Massive Benchmark for Evaluating Instructed Retrieval (2024.emnlp-main)

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Challenge: Existing IR benchmarks focus on a limited scope of tasks, making them insufficient for evaluating the latest IR models.
Approach: They propose a multi-task instruction-tuned IR benchmark that includes 126 distinct IR tasks across 6 domains.
Outcome: The proposed model performs better on instruction-tuned models than non-instruction-tunned models on MAIR.
Confusion is the Final Barrier: Rethinking Jailbreak Evaluation and Investigating the Real Misuse Threat of LLMs (2025.findings-emnlp)

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Challenge: Large Language Models have been developed to deal with real-world crimes, but it remains unclear whether they internalize authentic knowledge or are forced to simulate toxic language patterns.
Approach: They construct knowledge-intensive Q&A to investigate misuse threats of Large Language Models in terms of dangerous knowledge possession, harmful task planning utility, and harmfulness judgment robustness.
Outcome: The findings raise concerns that jailbreak success is often attributable to a hallucination loop between jailbroken LLM and judger LLM .
Empower Nested Boolean Logic via Self-Supervised Curriculum Learning (2023.emnlp-main)

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Challenge: a new self-supervised learning method allows language models to generalize to much harder and longer-hop logic.
Approach: They propose a self-supervised learning method to empower language models with boolean logic . they augment training data with nested booles and program training from simpler to harder ones .
Outcome: The proposed method allows language models to generalize to much harder and longer-hop logic, which can hardly be learned through naive training.
Orchestrating Tokens and Sequences: Dynamic Hybrid Policy Optimization for RLVR (2026.findings-acl)

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Challenge: Existing RLVR algorithms focus on different granularities and have complementary strengths and limitations.
Approach: They propose a framework for reinforcement learning with verifiable rewards that bridges RLVR and GSPO . group-level importance ratios are used to update a policy, which preserves fine-grained credit assignment .
Outcome: The proposed framework outperforms existing methods on seven reasoning benchmarks.

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