PPaperPicks

Zhaochun Ren

Leiden University, The Netherlands

61 papers at tracked venues · 37 at CORE A* · active 2024–2026

DBLP profile ↗ORCID 0000-0002-9076-6565 ↗Google Scholar ↗Homepage ↗

Venues

ACL ×12SIGIR ×9ECIR ×8EMNLP ×6WWW ×6CIKM ×4ICLR ×3NeurIPS ×3WSDM ×3AAAI ×2RecSys ×2SIGKDD ×2NAACL ×1

Frequent coauthors

Pengjie Ren
×25
Zhumin Chen
×25
Maarten de Rijke
×16
Dawei Yin
×14
Suzan Verberne
×13
Xin Xin
×11
Zhengliang Shi
×10
Lingyong Yan
×10
Shuaiqiang Wang
×9
Mohammad Aliannejadi
×6
Zihan Wang
×6
Mengqi Zhang
×6

Papers

  1. Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part I
    ECIR 2026 ·
    Ricardo Campos
    ,
    Adam Jatowt
    ,
    Yanyan Lan
    ,
    Mohammad Aliannejadi
    ,
    Christine Bauer
    ,
    Sean MacAvaney
    ,
    Avishek Anand
    , Zhaochun Ren,
    Suzan Verberne
    ,
    Nan Bai
    ,
    Masoud Mansoury
  2. Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part II
    ECIR 2026 ·
    Ricardo Campos
    ,
    Adam Jatowt
    ,
    Yanyan Lan
    ,
    Mohammad Aliannejadi
    ,
    Christine Bauer
    ,
    Sean MacAvaney
    ,
    Avishek Anand
    , Zhaochun Ren,
    Suzan Verberne
    ,
    Nan Bai
    ,
    Masoud Mansoury
  3. Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part III
    ECIR 2026 ·
    Ricardo Campos
    ,
    Adam Jatowt
    ,
    Yanyan Lan
    ,
    Mohammad Aliannejadi
    ,
    Christine Bauer
    ,
    Sean MacAvaney
    ,
    Avishek Anand
    , Zhaochun Ren,
    Suzan Verberne
    ,
    Nan Bai
    ,
    Masoud Mansoury
  4. Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part IV
    ECIR 2026 ·
    Ricardo Campos
    ,
    Adam Jatowt
    ,
    Yanyan Lan
    ,
    Mohammad Aliannejadi
    ,
    Christine Bauer
    ,
    Sean MacAvaney
    ,
    Avishek Anand
    , Zhaochun Ren,
    Suzan Verberne
    ,
    Nan Bai
    ,
    Masoud Mansoury
  5. AgentSearch: Indexing, Retrieval, and Ranking of AI Agents
    SIGIR 2026 ·
    Bin Wu
    ,
    To Eun Kim
    ,
    Yue Feng
    ,
    Fernando Diaz
    , Zhaochun Ren,
    Emine Yilmaz
  6. Differentiable Semantic ID for Generative Recommendation
    SIGIR 2026 ·
    Junchen Fu
    ,
    Xuri Ge
    ,
    Alexandros Karatzoglou
    ,
    Ioannis Arapakis
    ,
    Suzan Verberne
    ,
    Joemon M. Jose
    , Zhaochun Ren
  7. Generative Retrieval with Few-Shot Indexing
    ECIR 2026 ·
    Arian Askari
    ,
    Chuan Meng
    ,
    Mohammad Aliannejadi
    , Zhaochun Ren,
    Evangelos Kanoulas
    ,
    Suzan Verberne
  8. Have We Really Understood Collaborative Information? An Empirical Investigation
    WSDM 2026 ·
    Xiaokun Zhang
    , Zhaochun Ren,
    Bowei He
    ,
    Ziqiang Cui
    ,
    Chen Ma
  9. Model Editing for New Document Integration in Generative Information Retrieval
    WWW 2026 ·
    Zhen Zhang
    ,
    Zihan Wang
    ,
    Xinyu Ma
    ,
    Shuaiqiang Wang
    ,
    Dawei Yin
    ,
    Xin Xin
    ,
    Pengjie Ren
    ,
    Maarten de Rijke
    , Zhaochun Ren
  10. R2NS: Recall and Re-ranking of Negative Samples for Sequential Recommendation
    WWW 2026 ·
    Yuanzi Li
    ,
    Xuri Ge
    ,
    Jingyu Zhao
    ,
    Yidan Wang
    ,
    Jiyuan Yang
    ,
    Zhumin Chen
    , Zhaochun Ren,
    Xin Xin
  11. Reinforced Efficient Reasoning via Semantically Diverse Exploration
    ACL 2026 ·
    Ziqi Zhao
    , Zhaochun Ren,
    Jiahong Zou
    ,
    Liu Yang
    ,
    Zhiwei Xu
    ,
    Xuri Ge
    ,
    Zhumin Chen
    ,
    Xinyu Ma
    ,
    Daiting Shi
    ,
    Shuaiqiang Wang
    ,
    Dawei Yin
    ,
    Xin Xin
  12. ReportLogic: Evaluating Logical Quality in Deep Research Reports
    ACL 2026 ·
    Jujia Zhao
    ,
    Zhaoxin Huan
    ,
    Zihan Wang
    ,
    Xiaolu Zhang
    ,
    Jun Zhou
    ,
    Suzan Verberne
    , Zhaochun Ren
  13. Social Welfare Function Leaderboard: On the Emergence of LLM Agents as the Welfare Dictator
    ACL 2026 ·
    Zhengliang Shi
    ,
    Ruotian Ma
    ,
    Jen-tse Huang
    ,
    Xinbei Ma
    ,
    Xingyu Chen
    ,
    Mengru Wang
    ,
    Qu Yang
    ,
    Yue Wang
    ,
    Fanghua Ye
    ,
    Ziyang Chen
    ,
    Shanyi Wang
    ,
    Cixing Li
    ,
    Wenxuan Wang
    ,
    Zhaopeng Tu
    ,
    Xiaolong Li
    , Zhaochun Ren,
    Liefeng Bo
  14. The Third Search Futures Workshop at ECIR'26
    ECIR 2026 ·
    Leif Azzopardi
    ,
    Charles L. A. Clarke
    ,
    Claudia Hauff
    ,
    Yubin Kim
    , Zhaochun Ren,
    Adam Roegiest
    ,
    Johanne R. Trippas
    ,
    Saber Zerhoudi
  15. Unifying Search and Recommendation in LLMs via Gradient Multi-Subspace Tuning
    SIGIR 2026 ·
    Jujia Zhao
    ,
    Zihan Wang
    ,
    Shuaiqun Pan
    ,
    Suzan Verberne
    , Zhaochun Ren
  16. A Cooperative Multi-Agent Framework for Zero-Shot Named Entity Recognition
    WWW 2025 ·
    Zihan Wang
    ,
    Ziqi Zhao
    ,
    Yougang Lyu
    ,
    Zhumin Chen
    ,
    Maarten de Rijke
    , Zhaochun Ren
  17. A Token is Worth over 1, 000 Tokens: Efficient Knowledge Distillation through Low-Rank Clone
    NeurIPS 2025 ·
    Jitai Hao
    ,
    Qiang Huang
    ,
    Hao Liu
    ,
    Xinyan Xiao
    , Zhaochun Ren,
    Jun Yu
  18. Belief-Calibrated Multi-Agent Consensus Seeking for Complex NLP Tasks
    NeurIPS 2025 ·
    Wentao Deng
    ,
    Jiahuan Pei
    ,
    Zhiwei Xu
    , Zhaochun Ren,
    Zhumin Chen
    ,
    Pengjie Ren
  19. Bridging the Capability Gap: Joint Alignment Tuning for Harmonizing LLM-based Multi-Agent Systems
    EMNLP 2025 ·
    Minghang Zhu
    ,
    Zhengliang Shi
    ,
    Zhiwei Xu
    ,
    Shiguang Wu
    ,
    Lingjie Wang
    ,
    Pengjie Ren
    , Zhaochun Ren,
    Zhumin Chen
  20. Constrained Auto-Regressive Decoding Constrains Generative Retrieval
    SIGIR 2025 ·
    Shiguang Wu
    , Zhaochun Ren,
    Xin Xin
    ,
    Jiyuan Yang
    ,
    Mengqi Zhang
    ,
    Zhumin Chen
    ,
    Maarten de Rijke
    ,
    Pengjie Ren
  21. Divide-Then-Aggregate: An Efficient Tool Learning Method via Parallel Tool Invocation
    ACL 2025 ·
    Dongsheng Zhu
    ,
    Weixian Shi
    ,
    Zhengliang Shi
    , Zhaochun Ren,
    Shuaiqiang Wang
    ,
    Lingyong Yan
    ,
    Dawei Yin
  22. Enhancing RAG Efficiency with Adaptive Context Compression
    EMNLP 2025 ·
    Shuyu Guo
    ,
    Shuo Zhang
    , Zhaochun Ren
  23. ExcluIR: Exclusionary Neural Information Retrieval
    AAAI 2025 ·
    Wenhao Zhang
    ,
    Mengqi Zhang
    ,
    Shiguang Wu
    ,
    Jiahuan Pei
    , Zhaochun Ren,
    Maarten de Rijke
    ,
    Zhumin Chen
    ,
    Pengjie Ren
  24. FULTR: A Large-Scale Fusion Learning to Rank Dataset and Its Application for Satisfaction-Oriented Ranking
    SIGKDD 2025 ·
    Yuchen Li
    ,
    Hao Zhang
    ,
    Haojie Zhang
    ,
    Hengyi Cai
    ,
    Xinyu Ma
    ,
    Shuaiqiang Wang
    ,
    Haoyi Xiong
    , Zhaochun Ren,
    Maarten de Rijke
    ,
    Dawei Yin
  25. Fine-Grained Emotion Recognition via In-Context Learning
    CIKM 2025 · Zhaochun Ren,
    Zhou Yang
    ,
    Chenglong Ye
    ,
    Haizhou Sun
    ,
    Chao Chen
    ,
    Xiaofei Zhu
    ,
    Xiangwen Liao
  26. Improving Sequential Recommenders through Counterfactual Augmentation of System Exposure
    SIGIR 2025 ·
    Ziqi Zhao
    , Zhaochun Ren,
    Jiyuan Yang
    ,
    Zuming Yan
    ,
    Zihan Wang
    ,
    Liu Yang
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Maarten de Rijke
    ,
    Xin Xin
  27. Iterative Self-Incentivization Empowers Large Language Models as Agentic Searchers
    NeurIPS 2025 ·
    Zhengliang Shi
    ,
    Lingyong Yan
    ,
    Dawei Yin
    ,
    Suzan Verberne
    ,
    Maarten de Rijke
    , Zhaochun Ren
  28. MACPO: Weak-to-Strong Alignment via Multi-Agent Contrastive Preference Optimization
    ICLR 2025 ·
    Yougang Lyu
    ,
    Lingyong Yan
    ,
    Zihan Wang
    ,
    Dawei Yin
    ,
    Pengjie Ren
    ,
    Maarten de Rijke
    , Zhaochun Ren
  29. Malevolence Attacks Against Pretrained Dialogue Models
    ECIR 2025 ·
    Pengjie Ren
    ,
    Ruiqi Li
    , Zhaochun Ren,
    Zhumin Chen
    ,
    Maarten de Rijke
    ,
    Yangjun Zhang
  30. Model Meets Knowledge: Analyzing Knowledge Types for Conversational Recommender Systems
    RecSys 2025 ·
    Jujia Zhao
    ,
    Yumeng Wang
    , Zhaochun Ren,
    Suzan Verberne
  31. Offline Trajectory Optimization for Offline Reinforcement Learning
    SIGKDD 2025 ·
    Ziqi Zhao
    , Zhaochun Ren,
    Liu Yang
    ,
    Yunsen Liang
    ,
    Fajie Yuan
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Jun Ma
    ,
    Xin Xin
  32. OmniKV: Dynamic Context Selection for Efficient Long-Context LLMs
    ICLR 2025 ·
    Jitai Hao
    ,
    Yuke Zhu
    ,
    Tian Wang
    ,
    Jun Yu
    ,
    Xin Xin
    ,
    Bo Zheng
    , Zhaochun Ren,
    Sheng Guo
  33. ProActLLM: Proactive Conversational Information Seeking with Large Language Models
    CIKM 2025 ·
    Shubham Chatterjee
    ,
    Xi Wang
    ,
    Shuo Zhang
    ,
    Sajad Ebrahimi
    , Zhaochun Ren,
    Debasis Ganguly
    ,
    Gareth J. F. Jones
    ,
    Emine Yilmaz
    ,
    Hamed Zamani
  34. Replication and Exploration of Generative Retrieval over Dynamic Corpora
    SIGIR 2025 ·
    Zhen Zhang
    ,
    Xinyu Ma
    ,
    Weiwei Sun
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Shuaiqiang Wang
    ,
    Dawei Yin
    ,
    Maarten de Rijke
    , Zhaochun Ren
  35. Retrieval Models Aren't Tool-Savvy: Benchmarking Tool Retrieval for Large Language Models
    ACL 2025 ·
    Zhengliang Shi
    ,
    Yuhan Wang
    ,
    Lingyong Yan
    ,
    Pengjie Ren
    ,
    Shuaiqiang Wang
    ,
    Dawei Yin
    , Zhaochun Ren
  36. SimPER: A Minimalist Approach to Preference Alignment without Hyperparameters
    ICLR 2025 ·
    Teng Xiao
    ,
    Yige Yuan
    ,
    Zhengyu Chen
    ,
    Mingxiao Li
    ,
    Shangsong Liang
    , Zhaochun Ren,
    Vasant G. Honavar
  37. Task Knowledge Injection via Interpolations and Reinstatement for Large Language Model Generalization
    ACL 2025 ·
    Yukun Zhao
    ,
    Lingyong Yan
    ,
    Zhenyang Li
    ,
    Shuaiqiang Wang
    ,
    Zhumin Chen
    , Zhaochun Ren,
    Dawei Yin
  38. The 1st Workshop on Human-Centered Recommender Systems
    WWW 2025 ·
    Kaike Zhang
    ,
    Yunfan Wu
    ,
    Yougang Lyu
    ,
    Du Su
    ,
    Yingqiang Ge
    ,
    Shuchang Liu
    ,
    Qi Cao
    , Zhaochun Ren,
    Fei Sun
  39. 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
  40. The Second Search Futures Workshop at ECIR'25
    ECIR 2025 ·
    Charles Clarke
    ,
    Paul B. Kantor
    ,
    Adam Roegiest
    ,
    Ian Soboroff
    ,
    Johanne R. Trippas
    , Zhaochun Ren
  41. Tool Learning in the Wild: Empowering Language Models as Automatic Tool Agents
    WWW 2025 ·
    Zhengliang Shi
    ,
    Shen Gao
    ,
    Lingyong Yan
    ,
    Yue Feng
    ,
    Xiuyi Chen
    ,
    Zhumin Chen
    ,
    Dawei Yin
    ,
    Suzan Verberne
    , Zhaochun Ren
  42. UIPE: Enhancing LLM Unlearning by Removing Knowledge Related to Forgetting Targets
    EMNLP 2025 ·
    Wenyu Wang
    ,
    Mengqi Zhang
    ,
    Xiaotian Ye
    , Zhaochun Ren,
    Pengjie Ren
    ,
    Zhumin Chen
  43. An Iterative Associative Memory Model for Empathetic Response Generation
    ACL 2024 ·
    Zhou Yang
    , Zhaochun Ren,
    Yufeng Wang
    ,
    Haizhou Sun
    ,
    Chao Chen
    ,
    Xiaofei Zhu
    ,
    Xiangwen Liao
  44. CAUSE: Counterfactual Assessment of User Satisfaction Estimation in Task-Oriented Dialogue Systems
    ACL 2024 ·
    Amin Abolghasemi
    , Zhaochun Ren,
    Arian Askari
    ,
    Mohammad Aliannejadi
    ,
    Maarten de Rijke
    ,
    Suzan Verberne
  45. Confucius: Iterative Tool Learning from Introspection Feedback by Easy-to-Difficult Curriculum
    AAAI 2024 ·
    Shen Gao
    ,
    Zhengliang Shi
    ,
    Minghang Zhu
    ,
    Bowen Fang
    ,
    Xin Xin
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Jun Ma
    , Zhaochun Ren
  46. Content-Based Collaborative Generation for Recommender Systems
    CIKM 2024 ·
    Yidan Wang
    , Zhaochun Ren,
    Weiwei Sun
    ,
    Jiyuan Yang
    ,
    Zhixiang Liang
    ,
    Xin Chen
    ,
    Ruobing Xie
    ,
    Su Yan
    ,
    Xu Zhang
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Xin Xin
  47. Debiasing Sequential Recommenders through Distributionally Robust Optimization over System Exposure
    WSDM 2024 ·
    Jiyuan Yang
    ,
    Yue Ding
    ,
    Yidan Wang
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Fei Cai
    ,
    Jun Ma
    ,
    Rui Zhang
    , Zhaochun Ren,
    Xin Xin
  48. Disentangling ID and Modality Effects for Session-based Recommendation
    SIGIR 2024 ·
    Xiaokun Zhang
    ,
    Bo Xu
    , Zhaochun Ren,
    Xiaochen Wang
    ,
    Hongfei Lin
    ,
    Fenglong Ma
  49. Generate-then-Ground in Retrieval-Augmented Generation for Multi-hop Question Answering
    ACL 2024 ·
    Zhengliang Shi
    ,
    Shuo Zhang
    ,
    Weiwei Sun
    ,
    Shen Gao
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    , Zhaochun Ren
  50. Generative News Recommendation
    WWW 2024 ·
    Shen Gao
    ,
    Jiabao Fang
    ,
    Quan Tu
    ,
    Zhitao Yao
    ,
    Zhumin Chen
    ,
    Pengjie Ren
    , Zhaochun Ren
  51. Generative Retrieval as Multi-Vector Dense Retrieval
    SIGIR 2024 ·
    Shiguang Wu
    ,
    Wenda Wei
    ,
    Mengqi Zhang
    ,
    Zhumin Chen
    ,
    Jun Ma
    , Zhaochun Ren,
    Maarten de Rijke
    ,
    Pengjie Ren
  52. KnowTuning: Knowledge-aware Fine-tuning for Large Language Models
    EMNLP 2024 ·
    Yougang Lyu
    ,
    Lingyong Yan
    ,
    Shuaiqiang Wang
    ,
    Haibo Shi
    ,
    Dawei Yin
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Maarten de Rijke
    , Zhaochun Ren
  53. Knowing What LLMs DO NOT Know: A Simple Yet Effective Self-Detection Method
    NAACL 2024 ·
    Yukun Zhao
    ,
    Lingyong Yan
    ,
    Weiwei Sun
    ,
    Guoliang Xing
    ,
    Chong Meng
    ,
    Shuaiqiang Wang
    ,
    Zhicong Cheng
    , Zhaochun Ren,
    Dawei Yin
  54. Learning to Use Tools via Cooperative and Interactive Agents
    EMNLP 2024 ·
    Zhengliang Shi
    ,
    Shen Gao
    ,
    Xiuyi Chen
    ,
    Yue Feng
    ,
    Lingyong Yan
    ,
    Haibo Shi
    ,
    Dawei Yin
    ,
    Pengjie Ren
    ,
    Suzan Verberne
    , Zhaochun Ren
  55. MAIR: A Massive Benchmark for Evaluating Instructed Retrieval
    EMNLP 2024 ·
    Weiwei Sun
    ,
    Zhengliang Shi
    ,
    Wu Long
    ,
    Lingyong Yan
    ,
    Xinyu Ma
    ,
    Yiding Liu
    ,
    Min Cao
    ,
    Dawei Yin
    , Zhaochun Ren
  56. MEFT: Memory-Efficient Fine-Tuning through Sparse Adapter
    ACL 2024 ·
    Jitai Hao
    ,
    Weiwei Sun
    ,
    Xin Xin
    ,
    Qi Meng
    ,
    Zhumin Chen
    ,
    Pengjie Ren
    , Zhaochun Ren
  57. MELoRA: Mini-Ensemble Low-Rank Adapters for Parameter-Efficient Fine-Tuning
    ACL 2024 ·
    Pengjie Ren
    ,
    Chengshun Shi
    ,
    Shiguang Wu
    ,
    Mengqi Zhang
    , Zhaochun Ren,
    Maarten de Rijke
    ,
    Zhumin Chen
    ,
    Jiahuan Pei
  58. On the Effectiveness of Unlearning in Session-Based Recommendation
    WSDM 2024 ·
    Xin Xin
    ,
    Liu Yang
    ,
    Ziqi Zhao
    ,
    Pengjie Ren
    ,
    Zhumin Chen
    ,
    Jun Ma
    , Zhaochun Ren
  59. Recent Advances in Generative Information Retrieval
    SIGIR 2024 ·
    Yubao Tang
    ,
    Ruqing Zhang
    , Zhaochun Ren,
    Jiafeng Guo
    ,
    Maarten de Rijke
  60. Self-Supervised Position Debiasing for Large Language Models
    ACL 2024 ·
    Zhongkun Liu
    ,
    Zheng Chen
    ,
    Mengqi Zhang
    , Zhaochun Ren,
    Pengjie Ren
    ,
    Zhumin Chen
  61. Towards Empathetic Conversational Recommender Systems
    RecSys 2024 ·
    Xiaoyu Zhang
    ,
    Ruobing Xie
    ,
    Yougang Lyu
    ,
    Xin Xin
    ,
    Pengjie Ren
    ,
    Mingfei Liang
    ,
    Bo Zhang
    ,
    Zhanhui Kang
    ,
    Maarten de Rijke
    , Zhaochun Ren