Xu Chen

Renmin University of China, China

52 papers at tracked venues · 43 at CORE A* · active 2024–2026

DBLP profile ↗ORCID 0000-0003-0144-1775 ↗Google Scholar ↗Homepage ↗

Venues

ACL ×8 NeurIPS ×7 SIGKDD ×7 WWW ×7 ICLR ×4 NAACL ×4 EMNLP ×3 ICML ×3 AAAI ×2 SIGIR ×2 ACM MM ×1 CIKM ×1 ICDE ×1 RecSys ×1 VLDB ×1

Frequent coauthors

Quanyu Dai

×13

Zeyu Zhang

×12

Ji-Rong Wen

×12

Zhenhua Dong

×11

Lei Wang

×10

Haoxuan Li

×9

Yankai Lin

×9

Rui Li

×8

Xueyang Feng

×8

Jiakai Tang

×7

Zexu Sun

×6

Haoran Tan

×6

Papers

Beyond Step Pruning: Information Theory Based Step-level Optimization for Self-Refining Large Language Models
AAAI 2026 ·
Jinman Zhao
,
Erxue Min
,
Hui Wu
,
Ziheng Li
,
Zexu Sun
,
Hengyi Cai
,
Shuaiqiang Wang
, Xu Chen,
Gerald Penn
Divergence Meets Consensus: A Multi-Source Negative Sampling Framework for Sequential Recommendation
SIGIR 2026 ·
Yuanzi Li
,
Lingjie Wang
,
Jingyu Zhao
,
Zihang Tian
,
Yuhan Wang
,
Lei Wang
, Xu Chen
Explicit v.s. Implicit Memory: Exploring Multi-hop Complex Reasoning Over Personalized Information
SIGKDD 2026 ·
Zeyu Zhang
,
Yang Zhang
,
Haoran Tan
,
Rui Li
, Xu Chen
From Coarse to Fine: Self-Adaptive Hierarchical Planning for LLM Agents
ACL 2026 ·
Haoran Tan
,
Zeyu Zhang
,
Chen Ma
,
Tianze Liu
,
Quanyu Dai
, Xu Chen
Learning from Cognition: Enhancing RL Efficiency for LLM Reasoning via Hierarchical Metacognitive Decomposition and Refinement
ACL 2026 ·
Zexu Sun
,
Yongcheng Zeng
,
Erxue Min
,
Heyang Gao
,
Bokai Ji
,
Dugang Liu
,
Xing Tang
,
Xiuqiang He
, Xu Chen
Optimizing Multi-Turn Interactive Recommendation Agents via Generative Intrinsic Motivation
WWW 2026 ·
Xueyang Feng
,
Jiakai Tang
, Xu Chen,
Quanyu Dai
,
Zhenhua Dong
CAM: A Constructivist View of Agentic Memory for LLM-Based Reading Comprehension
NeurIPS 2025 ·
Rui Li
,
Zeyu Zhang
,
Xiaohe Bo
,
Zihang Tian
, Xu Chen,
Quanyu Dai
,
Zhenhua Dong
,
Ruiming Tang
CharacterBox: Evaluating the Role-Playing Capabilities of LLMs in Text-Based Virtual Worlds
NAACL 2025 ·
Lei Wang
,
Jianxun Lian
,
Yi Huang
,
Yanqi Dai
,
Haoxuan Li
, Xu Chen,
Xing Xie
,
Ji-Rong Wen
Distributional LLM-as-a-Judge
NeurIPS 2025 ·
Luyu Chen
,
Zeyu Zhang
,
Haoran Tan
,
Quanyu Dai
,
Hao Yang
,
Zhenhua Dong
, Xu Chen
Enhancing Recommendation Explanations through User-Centric Refinement
EMNLP 2025 ·
Jingsen Zhang
,
Zihang Tian
,
Xueyang Feng
, Xu Chen,
Chong Chen
Expectation Confirmation Preference Optimization for Multi-Turn Conversational Recommendation Agent
ACL 2025 ·
Xueyang Feng
,
Jingsen Zhang
,
Jiakai Tang
,
Wei Li
,
Guohao Cai
, Xu Chen,
Quanyu Dai
,
Yue Zhu
,
Zhenhua Dong
GenSim: A General Social Simulation Platform with Large Language Model based Agents
NAACL 2025 ·
Jiakai Tang
,
Heyang Gao
,
Xuchen Pan
,
Lei Wang
,
Haoran Tan
,
Dawei Gao
,
Yushuo Chen
, Xu Chen,
Yankai Lin
,
Yaliang Li
,
Bolin Ding
,
Jingren Zhou
,
Jun Wang
,
Ji-Rong Wen
Improving Retrospective Language Agents via Joint Policy Gradient Optimization
NAACL 2025 ·
Xueyang Feng
,
Bo Lan
,
Quanyu Dai
,
Lei Wang
,
Jiakai Tang
, Xu Chen,
Zhenhua Dong
,
Ji-Rong Wen
Iterative Missing Data Imputation with Model Form Adaptation and Non-Missing Feature Supervision
NeurIPS 2025 ·
Hao Wang
,
Zhengnan Li
,
Zhichao Chen
, Xu Chen,
Shuting He
,
Guangyi Liu
,
Haoxuan Li
,
Zhouchen Lin
KAPA: A Deliberative Agent Framework with Tree-Structured Knowledge Base for Multi-Domain User Intent Understanding
ACL 2025 ·
Jiakai Tang
,
Shiqi Shen
,
Zhipeng Wang
,
Gong Zhi
,
Xueyang Feng
,
Zexu Sun
,
Haoran Tan
, Xu Chen
KnowTrace: Bootstrapping Iterative Retrieval-Augmented Generation with Structured Knowledge Tracing
SIGKDD 2025 ·
Rui Li
,
Quanyu Dai
,
Zeyu Zhang
, Xu Chen,
Zhenhua Dong
,
Ji-Rong Wen
LLM-Based Multi-Agent Systems are Scalable Graph Generative Models
ACL 2025 ·
Jiarui Ji
,
Runlin Lei
,
Jialing Bi
,
Zhewei Wei
, Xu Chen,
Yankai Lin
,
Xuchen Pan
,
Yaliang Li
,
Bolin Ding
Lighter-X: An Efficient and Plug-and-play Strategy for Graph-based Recommendation through Decoupled Propagation
VLDB 2025 ·
Yanping Zheng
,
Zhewei Wei
,
Frank De Hoo
, Xu Chen,
Hongteng Xu
,
Yuhang Ye
,
Jiadeng Huang
MF-LLM: Simulating Population Decision Dynamics via a Mean-Field Large Language Model Framework
NeurIPS 2025 ·
Qirui Mi
,
Mengyue Yang
,
Xiangning Yu
,
Zhiyu Zhao
,
Cheng Deng
,
Bo An
,
Haifeng Zhang
, Xu Chen,
Jun Wang
MMRole: A Comprehensive Framework for Developing and Evaluating Multimodal Role-Playing Agents
ICLR 2025 ·
Yanqi Dai
,
Huanran Hu
,
Lei Wang
,
Shengjie Jin
, Xu Chen,
Zhiwu Lu
MemBench: Towards More Comprehensive Evaluation on the Memory of LLM-based Agents
ACL 2025 ·
Haoran Tan
,
Zeyu Zhang
,
Chen Ma
, Xu Chen,
Quanyu Dai
,
Zhenhua Dong
MemEngine: A Unified and Modular Library for Developing Advanced Memory of LLM-based Agents
WWW 2025 ·
Zeyu Zhang
,
Quanyu Dai
, Xu Chen,
Rui Li
,
Zhongyang Li
,
Zhenhua Dong
MemSim: A Bayesian Simulator for Evaluating Memory of LLM-based Personal Assistants
NeurIPS 2025 ·
Zeyu Zhang
,
Quanyu Dai
,
Luyu Chen
,
Zeren Jiang
,
Rui Li
,
Jieming Zhu
, Xu Chen,
Yi Xie
,
Zhenhua Dong
,
Ji-Rong Wen
Optimal Transport for Time Series Imputation
ICLR 2025 ·
Hao Wang
,
Zhengnan Li
,
Haoxuan Li
, Xu Chen,
Mingming Gong
,
BinChen
,
Zhichao Chen
Proximity Matters: Local Proximity Enhanced Balancing for Treatment Effect Estimation
SIGKDD 2025 ·
Hao Wang
,
Zhichao Chen
,
Zhaoran Liu
, Xu Chen,
Haoxuan Li
,
Zhouchen Lin
RecUserSim: A Realistic and Diverse User Simulator for Evaluating Conversational Recommender Systems
WWW 2025 ·
Luyu Chen
,
Quanyu Dai
,
Zeyu Zhang
,
Xueyang Feng
,
Mingyu Zhang
,
Pengcheng Tang
, Xu Chen,
Yue Zhu
,
Zhenhua Dong
Select, Read, and Write: A Multi-Agent Framework of Full-Text-based Related Work Generation
ACL 2025 ·
Xiaochuan Liu
,
Ruihua Song
,
Xiting Wang
, Xu Chen
Tackling the Length Barrier: Dynamic Context Browsing for Knowledge-Intensive Task
SIGKDD 2025 ·
Hongjin Qian
,
Zheng Liu
,
Peitian Zhang
,
Kelong Mao
,
Yujia Zhou
, Xu Chen,
Zhicheng Dou
The 1st Workshop on LLM Agents for Social Simulation
CIKM 2025 ·
Yige Yuan
,
Junkai Zhou
,
Bingbing Xu
,
Liang Pang
,
Du Su
,
An Zhang
,
Teng Xiao
,
Fengli Xu
,
Zhaochun Ren
, Xu Chen
Time-o1: Time-Series Forecasting Needs Transformed Label Alignment
NeurIPS 2025 ·
Hao Wang
,
Pan Li
,
Zhichao Chen
, Xu Chen,
Qingyang Dai
,
Lei Wang
,
Haoxuan Li
,
Zhouchen Lin
Towards Effective and Efficient Continual Pre-training of Large Language Models
ACL 2025 ·
Jie Chen
,
Zhipeng Chen
,
Jiapeng Wang
,
Kun Zhou
,
Yutao Zhu
,
Jinhao Jiang
,
Yingqian Min
,
Xin Zhao
,
Zhicheng Dou
,
Jiaxin Mao
,
Yankai Lin
,
Ruihua Song
,
Jun Xu
, Xu Chen,
Rui Yan
,
Zhewei Wei
,
Di Hu
,
Wenbing Huang
,
Ji-Rong Wen
TrendSim: Simulating Trending Topics in Social Media Under Poisoning Attacks with LLM-based Multi-agent System
NAACL 2025 ·
Zeyu Zhang
,
Jianxun Lian
,
Chen Ma
,
Yaning Qu
,
Ye Luo
,
Lei Wang
,
Rui Li
, Xu Chen,
Yankai Lin
,
Le Wu
,
Xing Xie
,
Ji-Rong Wen
Unbiased Recommender Learning from Implicit Feedback via Weakly Supervised Learning
ICML 2025 ·
Hao Wang
,
Zhichao Chen
,
Haotian Wang
,
Yanchao Tan
,
Pan Li
,
Tianqiao Liu
, Xu Chen,
Haoxuan Li
,
Zhouchen Lin
Uncertainty and Influence aware Reward Model Refinement for Reinforcement Learning from Human Feedback
ICLR 2025 ·
Zexu Sun
,
Yiju Guo
,
Yankai Lin
, Xu Chen,
Qi Qi
,
Xing Tang
,
Xiuqiang He
,
Ji-Rong Wen
A Tutorial on Feature Interpretation in Recommender Systems
RecSys 2024 ·
Zhaocheng Du
,
Chuhan Wu
,
Qinglin Jia
,
Jieming Zhu
, Xu Chen
Causally Debiased Time-aware Recommendation
WWW 2024 ·
Lei Wang
,
Chen Ma
,
Xian Wu
,
Zhaopeng Qiu
,
Yefeng Zheng
, Xu Chen
Debiased Collaborative Filtering with Kernel-Based Causal Balancing
ICLR 2024 ·
Haoxuan Li
,
Chunyuan Zheng
,
Yanghao Xiao
,
Peng Wu
,
Zhi Geng
, Xu Chen,
Peng Cui
Generalizing Knowledge Graph Embedding with Universal Orthogonal Parameterization
ICML 2024 ·
Rui Li
,
Chaozhuo Li
,
Yanming Shen
,
Zeyu Zhang
, Xu Chen
Large Language Model Powered Agents for Information Retrieval
SIGIR 2024 ·
An Zhang
,
Yang Deng
,
Yankai Lin
, Xu Chen,
Ji-Rong Wen
,
Tat-Seng Chua
Large Language Model Powered Agents in the Web
WWW 2024 ·
Yang Deng
,
An Zhang
,
Yankai Lin
, Xu Chen,
Ji-Rong Wen
,
Tat-Seng Chua
Large Language Model-based Human-Agent Collaboration for Complex Task Solving
EMNLP 2024 ·
Xueyang Feng
,
Zhiyuan Chen
,
Yujia Qin
,
Yankai Lin
, Xu Chen,
Zhiyuan Liu
,
Ji-Rong Wen
Natural Language Explainable Recommendation with Robustness Enhancement
SIGKDD 2024 ·
Jingsen Zhang
,
Jiakai Tang
, Xu Chen,
Wenhui Yu
,
Lantao Hu
,
Peng Jiang
,
Han Li
Policy-Based Bayesian Active Causal Discovery with Deep Reinforcement Learning
SIGKDD 2024 ·
Heyang Gao
,
Zexu Sun
,
Hao Yang
, Xu Chen
Reflective Multi-Agent Collaboration based on Large Language Models
NeurIPS 2024 ·
Xiaohe Bo
,
Zeyu Zhang
,
Quanyu Dai
,
Xueyang Feng
,
Lei Wang
,
Rui Li
, Xu Chen,
Ji-Rong Wen
Relaxing the Accurate Imputation Assumption in Doubly Robust Learning for Debiased Collaborative Filtering
ICML 2024 ·
Haoxuan Li
,
Chunyuan Zheng
,
Shuyi Wang
,
Kunhan Wu
,
Eric Hao Wang
,
Peng Wu
,
Zhi Geng
, Xu Chen,
Xiao-Hua Zhou
See or Guess: Counterfactually Regularized Image Captioning
ACM MM 2024 ·
Qian Cao
, Xu Chen,
Ruihua Song
,
Xiting Wang
,
Xinting Huang
,
Yuchen Ren
Simulating Human Society with Large Language Model Agents: City, Social Media, and Economic System
WWW 2024 ·
Chen Gao
,
Fengli Xu
, Xu Chen,
Xiang Wang
,
Xiangnan He
,
Yong Li
Towards Robust Recommendation via Decision Boundary-aware Graph Contrastive Learning
SIGKDD 2024 ·
Jiakai Tang
,
Sunhao Dai
,
Zexu Sun
, Xu Chen,
Jun Xu
,
Wenhui Yu
,
Lantao Hu
,
Peng Jiang
,
Han Li
Towards Tool Use Alignment of Large Language Models
EMNLP 2024 ·
Zhiyuan Chen
,
Shiqi Shen
,
Guangyao Shen
,
Gong Zhi
, Xu Chen,
Yankai Lin
Uncovering the Propensity Identification Problem in Debiased Recommendations
ICDE 2024 ·
Honglei Zhang
,
Shuyi Wang
,
Haoxuan Li
,
Chunyuan Zheng
, Xu Chen,
Li Liu
,
Shanshan Luo
,
Peng Wu
Understanding Human Preferences: Towards More Personalized Video to Text Generation
WWW 2024 ·
Yihan Wu
,
Ruihua Song
, Xu Chen,
Hao Jiang
,
Zhao Cao
,
Jin Yu
Would You Like Your Data to Be Trained? A User Controllable Recommendation Framework
AAAI 2024 ·
Lei Wang
, Xu Chen,
Zhenhua Dong
,
Quanyu Dai