Papers by Yubo Li

41 papers
Rule-Guided Extraction: A Hierarchical Rule Optimization Framework for Document-Level Event Argument Extraction (2025.findings-emnlp)

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Challenge: Document-level event argument extraction (EAE) is a critical task in natural language processing.
Approach: They propose an LLM-driven HiErarchical Rule Optimization framework that iteratively generates and selects optimal hierarchical rules.
Outcome: The proposed framework outperforms few-shot supervised methods and outperformed state-of-the-art prompting baselines.
Towards Storage-Efficient Visual Document Retrieval: An Empirical Study on Reducing Patch-Level Embeddings (2025.findings-acl)

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Challenge: Visualized Document Retrieval (VDR) uses large vision-language models to encode document pages into embeddings.
Approach: They evaluate methods to reduce patch embeddings per page while minimizing performance degradation.
Outcome: The proposed method maintains 98.2% of retrieval performance with only 11.8% of original memory usage and preserves 94.6% effectiveness at 2% memory footprint.
PhysicsArena: The First Multimodal Physics Reasoning Benchmark Exploring Variable, Process, and Solution Dimensions (2025.findings-emnlp)

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Challenge: Current physics benchmarks focus on text-only inputs or only on problem-solving . current physics reasoning benchmarks neglect critical intermediate steps of variable identification and process formulation.
Approach: a new benchmark evaluates multimodal large language models in physics reasoning . the benchmark measures variables, process formulations, and solution derivation .
Outcome: PhysicsArena is the first multimodal physics reasoning benchmark . it evaluates MLLMs across three critical dimensions: variable identification, process formulation, and solution derivation.
Event Ontology Completion with Hierarchical Structure Evolution Networks (2023.emnlp-main)

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Challenge: Existing methods for event detection require predefined schemas, but manual defining is expensive and labor-intensive.
Approach: They propose a task to achieve event clustering, hierarchy expansion and type naming . they propose 'neighbor Contrastive Clustering' module and a Hierarchy-Aware Linking module .
Outcome: The proposed method outperforms baseline methods on three datasets.
CroAno : A Crowd Annotation Platform for Improving Label Consistency of Chinese NER Dataset (2021.emnlp-demo)

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Challenge: Existing crowd annotation tools for named entity recognition (NER) focus on efficiency and don't consider consistency of datasets.
Approach: They propose a crowd annotation platform for Chinese named entity recognition (NER) CroAno provides a systematic solution for improving label consistency of Chinese NER datasets.
Outcome: The proposed platform improves label consistency of Chinese NER datasets.
LEGO: A Multi-agent Collaborative Framework with Role-playing and Iterative Feedback for Causality Explanation Generation (2023.findings-emnlp)

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Challenge: Causality explanation generation is a generative task that aims to explain why a given cause-effect pair is true using natural language.
Approach: They propose a multi-agent framework with role-playing and iterative feedback for causality explanation generation.
Outcome: The proposed framework is superior to existing frameworks on WIKIWHY and e-CARE datasets.
Are Large Language Models Reliable Reviewers? A Benchmark for Error Detection in Financial Documents (2026.findings-acl)

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Challenge: Existing LLMs struggle to identify errors in financial documents, a study shows . 18% of financial practitioners make errors daily, one-third make errors several times weekly, and 59% make errors multiple times monthly.
Approach: They introduce FinED-Bench, a publicly available Benchmark for financial error detection . it covers nine real-world financial scenarios and includes over 900 documents in 2025 . supervised fine-tuning can significantly improve the performance of weaker LLMs, they show .
Outcome: The proposed benchmark covers nine real-world financial scenarios and includes over 900 documents reported in 2025 that are unseen by existing language models.
Tug-of-War between Knowledge: Exploring and Resolving Knowledge Conflicts in Retrieval-Augmented Language Models (2024.lrec-main)

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Challenge: Existing knowledge conflicts in RALMs can ensnare them in a tug-of-war between knowledge and evidence, limiting their practical applicability.
Approach: They propose a method called Conflict-Disentangle Contrastive Decoding (CD2) to better calibrate the model’s confidence.
Outcome: The proposed method can resolve knowledge conflicts in large language models with the help of conflict-disentangle contrast decoding (CD2) .
#HowYouTagTweets: Learning User Hashtagging Preferences via Personalized Topic Attention (2021.emnlp-main)

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Challenge: Existing methods based on latent topics cannot capture user interests and thus can't be used to predict how likely a user will post with a hashtag.
Approach: They propose a personalized topic attention model that captures salient contents to personalize hashtag contexts by predicting how likely a user will post with a hashtag.
Outcome: The proposed model significantly outperforms the state-of-the-art recommendation approach without exploiting latent topics.
Cutting Off the Head Ends the Conflict: A Mechanism for Interpreting and Mitigating Knowledge Conflicts in Language Models (2024.findings-acl)

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

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Challenge: Existing studies on event ontologies focus on entity-based OA, and neglect event-based one . however, independent development of event ontoologies often results in heterogeneous representations that raise the need for establishing alignments between semantically related events.
Approach: They propose a multi-view event ontology alignment method that utilizes description information and neighbor information to obtain richer representations of the event ontoologies.
Outcome: The proposed method outperforms existing entity-based methods and can serve as a strong baseline for future research.
Focus on Your Question! Interpreting and Mitigating Toxic CoT Problems in Commonsense Reasoning (2024.acl-long)

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Challenge: Large language models exhibit high-level commonsense reasoning abilities, especially with enhancement methods like Chain-of-Thought (CoT).
Approach: They propose a chain-of-thought-like method to elicit models' potential abilities to generate rationales and answers that are based on attribution tracing and causal tracers to probe the internal working mechanism of the LLM.
Outcome: The proposed method eliminates Toxic CoT problems and improves the model’s overall commonsense reasoning performance by 5.5%.
A Novel Matching Paradigm: Unified Generative and Discriminative LLM with Prompt Compression for Relevance Learning (2026.acl-industry)

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Challenge: Existing approaches to matching use Large Language Models as feature extractors, underutilizing their full modeling capabilities.
Approach: They propose a matching paradigm that integrates two-tower, single-towing, and generative tasks within a unified LLM framework via attention-mask partitioning.
Outcome: The proposed model achieves superior performance and strong practical value in an industrial search engine.
CN-AutoMIC: Distilling Chinese Commonsense Knowledge from Pretrained Language Models (2022.emnlp-main)

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Challenge: Existing commonsense knowledge graphs are limited to English, hindering research in non-English languages.
Approach: They propose a Chinese CKG generated from multilingual PLMs that is translated into Chinese . they propose 'generate-by-category' strategy to reduce invalid generation .
Outcome: The proposed CKG has high quality and diversity, surpassing the direct translation version of similar English CKGs.
FactVerse: A Benchmark for Factual Consistency in Interleaved Image–Text Generation (2026.acl-long)

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Challenge: Existing benchmarks lack effective mechanisms to evaluate factual consistency in interleaved image-text generation.
Approach: They propose a benchmark dedicated to evaluating factual consistency in interleaved image-text generation.
Outcome: The proposed framework outperforms existing evaluation methods in evaluating factual consistency in interleaved image-text generation.
Generating Temporally-ordered Event Sequences via Event Optimal Transport (2022.coling-1)

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

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Challenge: Large language models (LLMs) often exhibit poor performance on knowledge-intensive tasks, such as commonsense reasoning.
Approach: They propose a method to elicit, filter and integrate knowledge in large language models (LINKED) they propose 'reward model' to filter out noisy knowledge and 'take marginal consistent reasoning module'
Outcome: The proposed method outperforms SOTA baselines on two commonsense reasoning tasks.
PLAWBENCH: A Rubric-Based Benchmark for Evaluating LLMs in Real-World Legal Practice (2026.acl-long)

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Challenge: Existing benchmarks for large language models (LLMs) are coarse, single-dimensional metrics and do not explicitly assess fine-grained legal reasoning.
Approach: They propose a Practical Law Benchmark to evaluate large language models in real-world legal practice scenarios.
Outcome: The proposed model is based on 850 questions and 13 scenarios with expert-designed evaluation rubrics.
MAmmoTH-VL: Eliciting Multimodal Reasoning with Instruction Tuning at Scale (2025.acl-long)

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Challenge: Current instruction-tuning datasets focus on simplistic visual question answering tasks, and provide phrase-level answers without any intermediate rationales.
Approach: They propose to use open-source multimodal large language models to train MLLMs on a dataset with 12M instruction-response pairs to elicit CoT reasoning.
Outcome: The proposed model achieves state-of-the-art performance on benchmarks such as MathVerse, MMMU-Pro, and MuirBench, and gains improvements of up to 4% on non-reasoning-based benchmarks.
Uncertainty and Surprisal Jointly Deliver the Punchline: Exploiting Incongruity-Based Features for Humor Recognition (2021.acl-short)

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Challenge: Existing work on humor recognition does not examine the actual joke mechanism . a recent study focused on humor-specific stylistic features, but few have tried to establish a connection between them and humor theories.
Approach: They propose to model the set-up and punchline as part developing semantic uncertainty and disrupt audience expectations.
Outcome: The proposed features can tell jokes from non-jokes, compared with baselines.
Thinking Economically: A Hierarchical Framework for Adaptive-Complexity Reasoning in LLMs (2026.findings-acl)

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Challenge: Existing efficiency methods for Chain-of-Thought (CoT) generate excessively long rationales without commensurate accuracy gains.
Approach: They propose a training framework that operationalizes this principle through coarse-to-fine budgeting.
Outcome: Experiments on GSM8K and MATH500 show that HAB surpasses standard CoT in accuracy and reduces token usage, achieving stronger performance-efficiency trade-off than baselines.
Augmentation, Retrieval, Generation: Event Sequence Prediction with a Three-Stage Sequence-to-Sequence Approach (2022.coling-1)

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Challenge: Existing methods to predict event sequences are complex and ignore the knowledge of external events.
Approach: They propose a statistical induction problem to generate a sequence of events by exploring the similarity between the given goal and known sequences of events.
Outcome: The proposed model outperforms existing methods on an event sequence prediction task.
MMEKG: Multi-modal Event Knowledge Graph towards Universal Representation across Modalities (2022.acl-demo)

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Challenge: Recent Knowledge Graphs (KGs) store billions of world facts in a directed graph, but expression ability of such entity-centric KGs is limited.
Approach: They propose a large-scale multi-modal event knowledge graph named MMEKG that unifies different modalities of knowledge via events.
Outcome: The proposed system unifies different modalities of knowledge via events, which complement and disambiguate each other.
GDLLM: A Global Distance-aware Modeling Approach Based on Large Language Models for Event Temporal Relation Extraction (2025.findings-emnlp)

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Challenge: Existing approaches to analyzing large language models are limited by their pre-trained knowledge of Small Language Models(SLMs).
Approach: They propose a global distance-aware modeling approach based on Large Language Models (LLMs) they first present a distance-based graph structure utilizing Graph Attention Network(GAT)
Outcome: The proposed approach significantly improves minority relation class learning ability on two publicly available datasets, TB-Dense and MATRES.
Event Representation Learning with Multi-Grained Contrastive Learning and Triple-Mixture of Experts (2024.lrec-main)

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Challenge: Existing methods for learning event representations fail to capture hidden feature information between events.
Approach: They propose a method that extends the random masked language model by incorporating a specialized MLM to capture different grammatical structures within events.
Outcome: The proposed method outperforms baselines in hard similarity and transitive sentence similarity tasks, highlighting the superiority of the proposed method.
APPL: A Prompt Programming Language for Harmonious Integration of Programs and Large Language Model Prompts (2025.acl-long)

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Challenge: Large Language Models (LLMs) are capable of handling diverse tasks with well-crafted prompts and integration of external tools.
Approach: They propose a prompt programming language that acts as a bridge between computer programs and LLMs by providing convenient conventions between them.
Outcome: The proposed language is intuitive, concise, and efficient through representative scenarios including Chain-of-Thought with self-consistency (CoT-SC) and ReAct tool-use agent.
Re-TASK: Revisiting LLM Tasks from Capability, Skill, and Knowledge Perspectives (2025.findings-acl)

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Challenge: Existing approaches to solving complex tasks with large language models (LLMs) fail to decompose tasks accurately or execute subtasks effectively.
Approach: They propose a Chain-of-Learning (CoL) paradigm that highlights task dependencies on specific capability items, further broken down into their constituent knowledge and skill components.
Outcome: The proposed model improves Yi-1.5-9B and Llama3-Chinese-8B for legal tasks by 45.00% and 24.50% on different domains.
Doctor Recommendation in Online Health Forums via Expertise Learning (2022.acl-long)

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Challenge: Currently, manual doctor allocations are used to handle large volumes of queries, limiting the efficiency to help patients in sheer quantities.
Approach: They propose to use patient queries to model doctor recommendation using their profiles and past dialogues to estimate their capabilities.
Outcome: The proposed model outperforms baseline models on a Chinese online health forum, outperforming baseline models.
Firm or Fickle? Evaluating Large Language Models Consistency in Sequential Interactions (2025.findings-acl)

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Challenge: Large Language Models (LLMs) have demonstrated remarkable capabilities across diverse tasks, but their deployment in high-stake domains requires consistent and coherent behavior across multiple rounds of user interaction.
Approach: They propose a framework for evaluating and improving LLM response consistency, and introduce a benchmark dataset to evaluate LLM consistency.
Outcome: The proposed framework improves response stability without sacrificing accuracy, and offers a practical path toward more dependable behavior in critical, real-world deployments.
MTR-Bench: A Comprehensive Benchmark for Multi-Turn Reasoning Evaluation (2026.acl-long)

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Challenge: Recent advances in Large Language Models (LLMs) have shown promising results in complex reasoning tasks.
Approach: They propose to use a multi-turn reasoning evaluation framework to cover multi-turn interactions with the environments of large language models.
Outcome: The proposed framework covers diverse reasoning capabilities, fine-grained difficulty granularity, and necessitates multi-turn interactions with the environments.
Towards Better Chain-of-Thought: A Reflection on Effectiveness and Faithfulness (2025.findings-acl)

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Challenge: Chain-of-thought (CoT) prompting demonstrates varying performance under different reasoning tasks.
Approach: They propose to recall extra information from the question to enhance CoT generation and evaluate CoTs based on their information gain.
Outcome: The proposed method improves both the faithfulness and effectiveness of CoT and evaluates it based on their information gain.
Towards Verifiable Generation: A Benchmark for Knowledge-aware Language Model Attribution (2024.findings-acl)

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Challenge: Existing evaluation metrics and benchmarks to attribute large language models to structured knowledge are lacking.
Approach: They propose a task of Knowledge-aware Language Model Attribution that improves upon three core concerns with conventional attributed LMs.
Outcome: The proposed model improves upon core concerns with conventional attributed LMs.
Prompt for Extraction? PAIE: Prompting Argument Interaction for Event Argument Extraction (2022.acl-long)

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Challenge: Using a prompt-based model, we find that event argument extraction is efficient and generalized well to few-shot settings.
Approach: They propose a model PAIE for event argument extraction using prompt tuning for extractive objectives.
Outcome: The proposed model can extract arguments with the same role instead of heuristic threshold tuning.
Complex Event Schema Induction with Knowledge-Enriched Diffusion Model (2023.findings-emnlp)

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Challenge: Existing studies on event schema induction have been hindered by errors and data quality issues.
Approach: They propose a knowledge-enriched discrete diffusion model that distills event scenario knowledge from LLMs.
Outcome: The proposed model achieves outstanding performance across evaluation metrics.
Temporal Cognitive Tree: A Hierarchical Modeling Approach for Event Temporal Relation Extraction (2024.findings-emnlp)

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Challenge: Recent studies focus on locating relative position of event pairs on timeline . hierarchical modeling approach neglects multidimensional information in temporal relation and hierarchy of reasoning.
Approach: They propose a novel hierarchical modeling approach that mimics human logical reasoning by introducing a Temporal Cognitive Tree.
Outcome: The proposed model outperforms existing methods on TB-Dense and MATRES datasets.
RAG-RewardBench: Benchmarking Reward Models in Retrieval Augmented Generation for Preference Alignment (2025.findings-acl)

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Challenge: Existing retrieval augmented language models often overlook effective alignment with human preferences.
Approach: They propose a benchmark to evaluate RMs in retrieval augmented language models . they incorporate 18 RAG subsets, six retrievers, and 24 RALMs to increase diversity .
Outcome: The proposed benchmark combines 18 RAG subsets, six retrievers, and 24 RALMs to increase diversity of data sources.
Semantic-Eval : A Semantic Comprehension Evaluation Framework for Large Language Models Generation without Training (2025.acl-long)

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Challenge: Large language models (LLMs) have emerged as key drivers of progress in the field of natural language processing.
Approach: They propose a framework that assesses LLM-generated text based on semantic understanding.
Outcome: The proposed framework surpasses traditional evaluation metrics and lags behind GPT-4.
Improving Large Language Models in Event Relation Logical Prediction (2024.acl-long)

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Challenge: Event relation extraction tasks require rigorous logical reasoning and semantic comprehension, a challenge for narrative understanding and reasoning.
Approach: They propose three approaches to endow LLMs with event relation logic to generate more coherent answers across different scenarios.
Outcome: The proposed approach improves on a set of ERE tasks and provides insights for future work.
AgentsCourt: Building Judicial Decision-Making Agents with Court Debate Simulation and Legal Knowledge Augmentation (2024.findings-emnlp)

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Challenge: Recent advances in deep learning have significantly impacted the legal domain.
Approach: They propose a multi-agent framework for judicial decision-making that simulates the court trial process . they propose 420 Chinese judgment documents to support their framework and build a large-scale legal knowledge base .
Outcome: The proposed framework outperforms existing methods in various aspects, especially in generating legal articles.
NutFrame: Frame-based Conceptual Structure Induction with LLMs (2024.lrec-main)

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Challenge: Existing studies focus on syntactic knowledge and world knowledge, but conceptual structure is not well-understood.
Approach: They propose a benchmark for coNceptual structure induction based on FrameNet . they use prompts to induce conceptual structure of Framenet with LLMs .
Outcome: The proposed model is able to induce conceptual structure of FrameNet with LLMs.
Leros: Learning Explicit Reasoning on Synthesized Data for Commonsense Question Answering (2024.lrec-main)

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

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