Papers by Du Liang

47 papers
OOP: Object-Oriented Programming Evaluation Benchmark for Large Language Models (2024.findings-acl)

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Challenge: None Large language models (LLMs) are emerging as a key tool for automated programming.
Approach: They compare performance of None Large language models with language understanding models on functional programming and object-oriented programming benchmarks.
Outcome: The models perform relatively well on functional programming (FP) and object-oriented programming (OOP) benchmarks, while exhibiting poor performance on OOP benchmarks.
Zero-shot Sharpness-Aware Quantization for Pre-trained Language Models (2023.emnlp-main)

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Challenge: Existing zero-shot quantization methods are based on overfitting problem in adversarial learning process, leading to sub-optimal performance.
Approach: They propose a zero-shot sharpness-aware quantization framework for the quantization of various PLMs by optimizing a minimax problem.
Outcome: The proposed framework can achieve significant performance gains on discriminative and generative PLMs.
Enhancing Medical Dialogue Generation through Knowledge Refinement and Dynamic Prompt Adjustment (2025.findings-acl)

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Challenge: Medical dialogue systems (MDS) struggle to identify relevant medical knowledge and generate accurate responses.
Approach: They propose a medical dialogue system that integrates knowledge refining and dynamic prompt adjustment to improve medical knowledge and accuracy.
Outcome: The proposed system outperforms state-of-the-art systems in both generation quality and medical entity accuracy.
Revisiting Knowledge Distillation for Autoregressive Language Models (2024.acl-long)

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Challenge: Autoregressive language models (LMs) are expensive and memory intensive, preventing the development of industrial applications.
Approach: They propose an adaptive teaching approach to improve the KD of autoregressive language models by distilling knowledge into a small student model.
Outcome: The proposed method can achieve consistent and significant performance gains across all model types and sizes.
MathPrompter: Mathematical Reasoning using Large Language Models (2023.acl-industry)

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Challenge: Recent advances in natural language processing (NLP) can be attributed to massive scaling of Large Language Models (LLMs).
Approach: They propose a technique that improves performance of Large Language Models (LLMs) on arithmetic problems along with increased reliance in the predictions.
Outcome: The proposed technique improves performance on arithmetic problems and increases confidence in the output results.
AdaV: Adaptive Text-visual Redirection for Vision-Language Models (2025.findings-acl)

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Challenge: Vision-language models often generate excessive visual tokens, leading to poor performance . a novel training-free visual token pruning method is proposed to improve performance despite the computational cost associated with VLMs.
Approach: They propose a training-free visual token pruning method that reduces biased token pruning . they plan to open-source the code upon publication .
Outcome: The proposed method reduces biased token pruning and enhances model robustness with limited visual token budget.
MlingConf: A Comprehensive Study of Multilingual Confidence Estimation on Large Language Models (2025.findings-acl)

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Challenge: Existing studies on LLM confidence estimations in languages other than English have been limited to English.
Approach: They propose to use question-related language to prompt LLMs to assess their confidence in large language models.
Outcome: The proposed model improves on question-related language prompts for LS tasks, while English exhibits notable linguistic dominance in confidence estimations.
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.
From Domains to Instances: Dual-Granularity Data Synthesis for LLM Unlearning (2026.findings-acl)

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Challenge: Currently, the evaluation of unlearning is limited due to the lack of granularity in the model.
Approach: They propose a framework for synthesizing high-quality forget sets that exploits the target model per se to elicit data that matches its internal knowledge distribution through seed-guided and adversarial prompting.
Outcome: The proposed framework achieves a superior balance of relevance, diversity, and efficiency across benchmarks.
Jointly Learning Aspect-Focused and Inter-Aspect Relations with Graph Convolutional Networks for Aspect Sentiment Analysis (2020.coling-main)

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Challenge: Existing methods for aspect sentiment analysis do not include explicit sentiment expressions.
Approach: They propose to construct a heterogeneous graph by leveraging aspect-focused and inter-aspect contextual dependencies for the specific aspect.
Outcome: The proposed model outperforms state-of-the-art methods on four benchmark datasets and significantly boosts performance in comparison with BERT.
SEMGraph: Incorporating Sentiment Knowledge and Eye Movement into Graph Model for Sentiment Analysis (2022.emnlp-main)

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Challenge: Existing research on sentiment analysis based on eye movement signals has been attributed importance.
Approach: They propose a linguistic probing eye movement paradigm to extract eye movement features based on the relationship between linguistic features and human reading behavior.
Outcome: The proposed graph architecture achieves state-of-the-art performance on two sentiment analysis datasets with eye movement signals and three sentiment analysis data without eye movement signal.
Context-aware Embedding for Targeted Aspect-based Sentiment Analysis (P19-1)

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Challenge: Existing methods do not specifically pre-train reasonable embeddings for targets and aspects in TABSA.
Approach: They propose to refine the embeddings of targets and aspects using a sparse coefficient vector . this allows the embeds to be refined from highly correlative words instead of context-independent vectors .
Outcome: Experiments show that the proposed method improves on two benchmark datasets.
Light-R1: Curriculum SFT, DPO and RL for Long COT from Scratch and Beyond (2025.acl-industry)

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Challenge: Experimental results show that opensource curriculum training is more effective when distinct datasets are available for different training stages.
Approach: They propose an opensource suite for training long reasoning models using publicdata and models.
Outcome: The proposed model outperforms DeepSeek-R1-DistillQwen-32B models in math reasoning.
DoTAT: A Domain-oriented Text Annotation Tool (2022.acl-demo)

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Challenge: DoTAT is a domain-oriented text annotation tool that can reduce the time for event annotation by 19.7% . the tool supports multi-person collaborative process with automatically merging and review .
Approach: They propose a domain-oriented text annotation tool called DoTAT . it provides multi-person collaborative process with automatic merging and review .
Outcome: The proposed tool can reduce the time for event annotation by 19.7% compared with existing tools.
A Generative Model for End-to-End Argument Mining with Reconstructed Positional Encoding and Constrained Pointer Mechanism (2022.emnlp-main)

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Challenge: Argument mining (AM) is a challenging task as it requires recognizing complex argumentation structures involving multiple subtasks.
Approach: They propose a generative framework where expected outputs of AM are framed as a simple target sequence.
Outcome: The proposed framework achieves state-of-the-art on two AM benchmarks.
Data-Efficient Selection via Grammatical Complexity in Continual Pre-training of Domain-Specific LLMs (2025.emnlp-main)

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Challenge: Existing data selection strategies for continual pre-training of large language models often rely on scarce labeled data or computationally expensive LLMs.
Approach: They propose an annotation-independent data selection framework for CPT that evaluates grammatical complexity using lexical diversity and syntactic complexity.
Outcome: The proposed framework outperforms baselines on a financial dataset and surpasses full-data training by 1.7% using only 20% of the data.
Second Language (Arabic) Acquisition of LLMs via Progressive Vocabulary Expansion (2025.acl-long)

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Challenge: In the evolving landscape of large language models, the predominant focus has been on English and Chinese.
Approach: They propose to utilize Arabic-specific vocabulary in the tokenizer to accelerate decoding.
Outcome: The proposed model achieves decent performance comparable to the best Arabic LLMs across various Arabic benchmarks.
From Specific-MLLMs to Omni-MLLMs: A Survey on MLLMs Aligned with Multi-modalities (2025.findings-acl)

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Challenge: MLLMs are able to integrate multiple modalities into a single model to tackle complex tasks in real-world scenarios.
Approach: They propose a comprehensive survey of Omni-MLLMs to address the challenges and opportunities of multimodal modeling.
Outcome: The proposed model can integrate multiple modalities into a single model and provide novel perspectives.
Hawkes based Representation Learning for Reasoning over Scale-free Community-structured Temporal Knowledge Graphs (2025.coling-main)

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Challenge: Temporal knowledge graph reasoning is a useful tool for many practical tasks.
Approach: They propose a Hawkes process-based Evolutional Representation Learning Network model which learns structural information and evolutional patterns of a TKG simultaneously.
Outcome: The proposed model learns structural information and evolutional patterns of a TKG simultaneously, considering the characteristics of real-world networks: community structure, scale-free and temporal decaying.
Your Reasoning Model is Secretly a Reward Model - Optimization-Free Verification from Experience (2026.acl-long)

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Challenge: Existing verifiers operate on the surface text or on confidence proxies derived from token probabilities, which can be brittle.
Approach: They propose a training-free, non-parametric verifier that summarizes each reasoning trace by an activation delta and compares it to two class centroids computed from labeled experience.
Outcome: The proposed model improves selection and reranking on large and less-calibrated models.
KaFT: Knowledge-aware Fine-tuning for Boosting LLMs’ Domain-specific Question-Answering Performance (2025.findings-acl)

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Challenge: Recent literature reveals that supervised fine-tuning (SFT) is suboptimal for domain-specific question-answering tasks.
Approach: They propose a query diversification strategy for robust conflict detection and a knowledge-aware fine-tuning approach to effectively boost LLMs’ performance.
Outcome: The proposed approach improves the model generalization and alleviates the hallucination.
Agent Trading Arena: A Study on Numerical Understanding in LLM-Based Agents (2025.findings-emnlp)

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Challenge: Existing approaches to large language models are limited to historical backtesting and static data.
Approach: a new large-language model is developed to simulate real-time trading in a virtual stock market . the agent trading arena simulates real-world bid-ask interactions and provides real-life trading scenarios .
Outcome: The Agent Trading Arena simulates real-world market conditions and directly impacts price dynamics.
ZhuJiu-Knowledge: A Fairer Platform for Evaluating Multiple Knowledge Types in Large Language Models (2024.naacl-demo)

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Challenge: evaluating the knowledge of large language models (LLMs) is crucial, and rapid advancement in large language modeling has heightened the importance of model evaluations.
Approach: They propose a fairer benchmark for evaluating multiple knowledge types of LLMs by focusing on commonsense knowledge, world knowledge, and language knowledge.
Outcome: The proposed framework evaluates 14 current mainstream LLMs and provides a detailed discussion and analysis of their results.
NL ⇒ Schedule: Evaluate Multitask Scheduling Capability of Large Language Models (2026.acl-long)

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Challenge: Existing methods for scheduling from natural language descriptions rely on experts with limited scheduling skills and domain knowledge.
Approach: They propose a model to generate a feasible schedule from natural language descriptions.
Outcome: The proposed framework achieves more robust performance than six state-of-the-art LLM+solver methods.
BAR: A Backward Reasoning based Agent for Complex Minecraft Tasks (2025.findings-acl)

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Challenge: Existing studies focus on forward reasoning based planning, but this paradigm doesn't work well for complex tasks.
Approach: They propose to decompose a task into easily executed steps by planning and use a backward reasoning based agent to make the planning starting from the terminal state.
Outcome: The proposed model outperforms existing methods and the proposed modules in a virtual environment that simulates complex tasks based on real-world scenarios.
EventWeave: A Dynamic Framework for Capturing Core and Supporting Events in Dialogue Systems (2026.acl-long)

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Challenge: Existing dialogue systems process conversational turns in isolation, overlooking event structures that guide natural interactions.
Approach: They propose a framework that explicitly models relationships between conversational events to generate more contextually appropriate dialogue responses.
Outcome: Experiments on three dialogue datasets show that the proposed approach produces more natural responses while requiring less computational overhead.
ROSE Doesn’t Do That: Boosting the Safety of Instruction-Tuned Large Language Models with Reverse Prompt Contrastive Decoding (2024.findings-acl)

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Challenge: Existing methods for aligning LLMs output with expected safety require substantial training efforts and expensive computational resources.
Approach: They propose a method to directly boost the safety of existing instruction-tuned large language models without additional training.
Outcome: The proposed method improves safety of instruction-tuned large language models without training and requires expensive computational resources.
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.
Invocation Refiner: A Plug-and-Play Module for Rectifying LLM Tool Invocations (2026.findings-acl)

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Challenge: Large Language Models (LLMs) have shown remarkable capabilities in Tool-Integrated Reasoning (TIR) however, the practical application is often hindered by frequent errors in tool invocations, such as incorrect tool names, invalid parameters, wrong tool-call order, or malformed invocation formats.
Approach: They propose a specialized post-processing module that performs independent reasoning on the input of a frozen upstream LLM and an advanced RL algorithm to improve the tool-use reliability of base LLMs.
Outcome: The proposed module improves task completion rates and invocation accuracy over the raw outputs of various upstream LLMs on a diverse set of tool-use and reasoning benchmarks.
SLIM: Let LLM Learn More and Forget Less with Soft LoRA and Identity Mixture (2025.naacl-long)

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Challenge: balancing the training budget, downstream performance, and general capabilities of large language models remains a challenge in many applications.
Approach: They propose a mixture of expert framework based on Soft LoRA and Identity Mixture . SLIM allows dynamic routing between LoRA adapters and identity layers .
Outcome: The proposed framework reduces training cost while maintaining general capabilities . it can be open-sourced upon publication.
AdaJudge: Adaptive Multi-Perspective Judging for Reward Modeling (2026.acl-long)

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Challenge: Existing reward models rely on a static pooling strategy to condense sequences into scalar scores, which is ill-suited for fine-grained discrimination.
Approach: They propose a framework that jointly adapts representation and aggregation to address these limitations by integrating a static inductive bias with a representational mismatch.
Outcome: Experiments on RM-Bench and JudgeBench show that AdaJudge outperforms strong off-the-shelf reward models and traditional pooling baselines.
PAGED: A Benchmark for Procedural Graphs Extraction from Documents (2024.acl-long)

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Challenge: Existing methods for extraction of procedural graphs from documents are not solving the task well.
Approach: They propose a benchmark to test automatic extraction of procedural graphs from documents . they involve three advanced large language models and enhance them with a novel self-refine strategy .
Outcome: The proposed benchmark systematically examines the progress of current methods and explores the potential of emerging large language models (LLMs) on this task.
COIG-P: A High-Quality and Large-Scale Chinese Preference Dataset for Alignment with Human Values (2026.findings-eacl)

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Challenge: Existing Chinese preference datasets suffer from limited scale, restricted domain coverage, and insufficiently rigorous data validation.
Approach: They propose an LLM-based data annotation pipeline with no human intervention to annotate Chinese preference datasets.
Outcome: The proposed pipeline outperforms existing Chinese preference datasets on AlignBench and Chinese Reward Benchmark.
Efficient Hyperparameter Optimization for LLM Reinforcement Learning (2026.acl-long)

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Challenge: Existing hyperparameter optimization methods are inefficient in reinforcement learning due to model scale and resource-intensive training cycles.
Approach: They propose a hyperparameter optimization method that adapts both model size and training budget as fidelity.
Outcome: The proposed method significantly improves the computational efficiency of each trial (up to 14.9) over existing HPO methods.
Flexibly Utilize Memory for Long-Term Conversation via a Fragment-then-Compose Framework (2025.emnlp-main)

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Challenge: Large language models extract useful information from conversation history to enhance the response in long-term conversations.
Approach: They propose a Fragment-then-Compose framework to optimize memory utilization for long-term open-domain conversation.
Outcome: The proposed framework can be used to extract useful information from conversation history . it can be adapted to different situations and improve response generation .
Knowing-how & Knowing-that: A New Task for Machine Comprehension of User Manuals (2023.findings-acl)

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Challenge: Existing methods for machine reading comprehension of user manuals have trouble answering complex questions.
Approach: They propose a knowing-how & knowing-that task that requires the model to answer factoid-style, procedure-style and inconsistent questions about user manuals.
Outcome: The proposed model can answer factoid-style, procedure-style and inconsistent questions about user manuals.
Learning from Imperfect Data: Towards Efficient Knowledge Distillation of Autoregressive Language Models for Text-to-SQL (2024.findings-emnlp)

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Challenge: Existing text-to-SQL LLMs are computationally expensive and difficult to deploy in real-world applications.
Approach: They propose to distill a larger teacher model into a smaller student model by using imperfect data to improve the KD.
Outcome: The proposed method achieves the best tradeoff between performance and efficiency on 5 text-to-SQL benchmarks.
CARE: A Clue-guided Assistant for CSRs to Read User Manuals (2024.acl-long)

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Challenge: Current solutions don't fit the online custom service scenarios well due to the lack of attention to user questions and possible responses.
Approach: They propose to build a clue-guided assistant for customer service representations (CSRs) that can provide accurate responses and explicitly show explainable paths about how to arrive at these responses.
Outcome: The proposed assistant can reduce CSRs' reading burden and keep high service quality, in particular with >35% decrease in time spent and keeping a >0.75 ICC score.
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.
Multilingual Molecular Representation Learning via Contrastive Pre-training (2022.acl-long)

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Challenge: Molecular representation learning is an essential role in cheminformatics, but language model-based approaches focus on local features, hence they may not capture global information.
Approach: They propose a multilingual molecular embedding generation approach that uses two different languages to train a given molecule.
Outcome: The proposed approach is pre-trained using SMILES and IUPAC as two different languages on large-scale molecules.
Chunk, Align, Select: A Simple Long-sequence Processing Method for Transformers (2024.acl-long)

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Challenge: Existing transformer-based models struggle with long-sequence processing due to computational costs . a framework to enhance long-content processing of transformers is proposed .
Approach: They propose a framework to enhance long-sequence processing of transformers by three steps . they demonstrate that the framework significantly outperforms prior long-quence processors .
Outcome: The proposed framework outperforms baseline models on long-sequence summarization and reading comprehension tasks.
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.
Self-Evolution Learning for Discriminative Language Model Pretraining (2023.findings-acl)

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Challenge: Random masking does not consider the importance of the different words in the sentence meaning, e.g., entity-level masking requires expensive prior knowledge and generally does not use existing model weights.
Approach: They propose a token masking and learning method that uses a random masking strategy to learn the under-explored tokens.
Outcome: The proposed method improves linguistic knowledge learning and generalization on 10 tasks.
Improving Sharpness-Aware Minimization with Fisher Mask for Better Generalization on Language Models (2022.findings-emnlp)

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Challenge: Existing methods for fine-tuning pretrained language models suffer from poor generalization . however, they add a perturbation to each model parameter equally, which is sub-optimal .
Approach: They propose a sharpness-aware minimization optimization procedure that introduces a Fisher mask to improve the efficiency of SAM.
Outcome: The proposed method outperforms the vanilla sharpness-aware minimization method on GLUE and SuperGLUE benchmarks.
UNIVID: Unified Vision-Language Model for Video Moderation (2026.acl-industry)

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Challenge: Existing video moderation systems rely on fragmented black-box classification models that are difficult to maintain and lack transparency.
Approach: They propose a Unified Vision-Language model for Video Moderation that generates policy-aware captions that serve as an interpretable intermediate representation.
Outcome: The proposed model reduces violation leakage and overkill rate by 42.7% while reducing maintenance costs.
Escaping the Echo Trap: On Credit Assignment Failure in Multi-turn LLM Self-Reflection (2026.acl-long)

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Challenge: Existing methods for multi-turn self-reflection are limited by the Echo Trap problem . the model is limited by its inherent capabilities and repeats earlier reflections to preserve reward signals .
Approach: They propose a tree-structured extension of GRPO for multi-turn self-reflection which enables more accurate advantage estimation.
Outcome: The proposed method mitigates behavior collapse and improves performance across benchmarks.
ReSURE: Regularizing Supervision Unreliability for Multi-turn Dialogue Fine-tuning (2025.emnlp-main)

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Challenge: Existing methods address data quality via static prefiltering, which decouples quality control from training and fails to mitigate turn-level error propagation.
Approach: They propose an adaptive learning method that dynamically down-weights unreliable supervision without explicit filtering.
Outcome: Experiments on single-source and mixed-quality datasets show improved stability and response quality.

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