activity
20212026
most citedTHUIR@COLIEE 2023: Incorporating Structural Knowledge into Pre-trained Language Models for Legal Case Retrieval

6 citations · 33 across the 50 of their papers we have counts for

collaborators

52 papers

cs.CL2026

Composable Parametric Demographic Injection for Values Survey Simulation

Xinyuan Cao, Qingyi Pan, Bangde Du +7

Large language models (LLMs) are increasingly used as simulated respondents in computational social science, yet accurately reproducing population-specific heterogeneous response d…

cs.CL2026

Mitigating Identity Essentialism in LLM Agents with Longitudinal Life Trajectories

Hexi Wang, Yujia Zhou, Bangde Du +7

Large language models (LLMs) offer a scalable approach to social simulation, but their credibility depends on how agents are constructed. Existing methods can partially reproduce p…

cs.DL2026

RWGBench: Evaluating Scholarly Positioning in Related Work Generation

Anzhe Xie, Weihang Su, Jiaxin Mao +4

Large language models have shown strong fluency in scientific writing, yet the evaluation of related work generation (RWG) remains limited. Existing RWG evaluations largely inherit…

cs.IR2026

Structure-aware Relative Policy Optimization for Ranking

Yiteng Tu, Weihang Su, Zitao Su +3

Ranking is a fundamental component of modern information access systems. Reinforcement learning (RL) provides a flexible framework for directly optimizing coarse-grained feedback a…

cs.CL2026★ 1 cited

MetaSyn: A Benchmark for LLM Agents on Meta-Analysis Articles from Nature Portfolio

Anzhe Xie, Weihang Su, Yujia Zhou +3

Systematic review and meta-analysis is an important method for scientific research. It comprehensively studies target research questions by combining evidence from multiple indepen…

cs.LG2026

Co-Evolving LLM Evaluators and Policies via DynamicRubric

Beining Wang, Weihang Su, Hongtao Tian +8

Post-training with evaluator feedback on policy-induced samples serves as a major mechanism for improving large language models. As policies improve, these sampled responses become…

cs.IR2026

Generative Chinese Statute Retrieval

Yiteng Tu, Zitao Su, Weihang Su +5

Statute retrieval is a fundamental task in legal information retrieval, yet existing approaches struggle to bridge the gap between colloquial legal queries and formal statutory lan…

cs.CL2026

Retrievable Gradients: Continual Post-Training Without Cumulative Weight Drift

Weihang Su, Jiacheng Kang, Jingyan Xu +7

Continual post-training enables models to absorb emerging knowledge after deployment, but repeatedly updating shared parameters can accumulate weight drift, potentially causing cat…

cs.CL2026

Decoupled Mixture-of-Experts for Parametric Knowledge Injection

Baoqing Yue, Weihang Su, Qingyao Ai +5

Knowledge injection aims to equip large language models (LLMs) with external, domain-specific, or time-sensitive knowledge. Existing approaches typically face a trade-off between f…

cs.CL2026

Adaptive Multi-Resolution Procedural Knowledge Compression for Large Language Models

Changyue Wang, Weihang Su, Qingyao Ai +5

Large language models (LLMs) are widely used to tackle complex tasks with autonomous workflows. Recently, reusable natural language skills have emerged as a popular paradigm to inj…

cs.CL2026

Benchmarking LLM-as-a-Judge for Long-Form Output Evaluation

Junjie Chen, Yuxi Dong, Haitao Li +5

As large language models (LLMs) are increasingly used for long-form generation, reliably evaluating long-form outputs has become a critical challenge. LLM-as-a-judge offers a scala…

cs.CL2026

Enhancing Judgment Document Generation via Agentic Legal Information Collection and Rubric-Guided Optimization

Weihang Su, Xuanyi Chen, Yueyue Wu +2

Automating the drafting of judgment documents is pivotal to judicial efficiency, yet it remains challenging due to the dual requirements of comprehensive retrieval of legal informa…

cs.CL2026

Decoupling Knowledge and Task Subspaces for Composable Parametric Retrieval Augmented Generation

Weihang Su, Hanwen Zhang, Qingyao Ai +1

Parametric Retrieval-Augmented Generation (PRAG) encodes external documents into lightweight parameter modules that can be retrieved and merged at inference time, offering a promis…

cs.CL2026

Skill Retrieval Augmentation for Agentic AI

Weihang Su, Jianming Long, Qingyao Ai +6

As large language models (LLMs) evolve into agentic problem solvers, they increasingly rely on external, reusable skills to handle tasks beyond their native parametric capabilities…

cs.IR2026

Analytical Search

Yiteng Tu, Shuo Miao, Weihang Su +2

Analytical information needs, such as trend analysis and causal impact assessment, are prevalent across various domains including law, finance, science, and much more. However, exi…

cs.IR2026

Multi-Field Tool Retrieval

Yichen Tang, Weihang Su, Yiqun Liu +1

Integrating external tools enables Large Language Models (LLMs) to interact with real-world environments and solve complex tasks. Given the growing scale of available tools, effect…

cs.CL2026

Improve Large Language Model Systems with User Logs

Changyue Wang, Weihang Su, Qingyao Ai +4

Scaling training data and model parameters has long driven progress in large language models (LLMs), but this paradigm is increasingly constrained by the scarcity of high-quality d…

cs.IR2026

Equity vs. Equality: Optimizing Ranking Fairness for Tailored Provider Needs

Yiteng Tu, Weihang Su, Shuguang Han +2

Ranking plays a central role in connecting users and providers in Information Retrieval (IR) systems, making provider-side fairness an important challenge. While recent research ha…

cs.CY2026

Evaluation of Large Language Models in Legal Applications: Challenges, Methods, and Future Directions

Yiran Hu, Huanghai Liu, Chong Wang +15

Large language models (LLMs) are being increasingly integrated into legal applications, including judicial decision support, legal practice assistance, and public-facing legal serv…

cs.CL2025

Towards Unification of Hallucination Detection and Fact Verification for Large Language Models

Weihang Su, Jianming Long, Changyue Wang +5

Large Language Models (LLMs) frequently exhibit hallucinations, generating content that appears fluent and coherent but is factually incorrect. Such errors undermine trust and hind…

cs.CL2025

TwinVoice: A Multi-dimensional Benchmark Towards Digital Twins via LLM Persona Simulation

Bangde Du, Minghao Guo, Songming He +8

Large Language Models (LLMs) are exhibiting emergent human-like abilities and are increasingly envisioned as the foundation for simulating an individual's communication style, beha…

cs.IR2025

Generalized Pseudo-Relevance Feedback

Yiteng Tu, Weihang Su, Yujia Zhou +4

Query rewriting is a fundamental technique in information retrieval (IR). It typically employs the retrieval result as relevance feedback to refine the query and thereby addresses…

cs.AI2025

From <Answer> to <Think>: Multidimensional Supervision of Reasoning Process for LLM Optimization

Beining Wang, Weihang Su, Hongtao Tian +5

Improving the multi-step reasoning ability of Large Language Models (LLMs) is a critical yet challenging task. The dominant paradigm, outcome-supervised reinforcement learning (RLV…

cs.LG2025

MemoryBench: A Benchmark for Memory and Continual Learning in LLM Systems

Qingyao Ai, Yichen Tang, Changyue Wang +3

Scaling up data, parameters, and test-time computation has been the mainstream methods to improve LLM systems (LLMsys), but their upper bounds are almost reached due to the gradual…