Yiqun Liu

I am now working as professor of the Department of Computer Science and Technology, director of the Office for Research, as well as director of the Institute for Internet Judiciary in Tsinghua University, Beijing, China. I am also a visiting research professor of National University of Singapore and a visiting professor of National Institute of Informatics (NII) of Japan. My major research interests are in Web Search, User Behavior Analysis, and Natural Language Processing.

Recent Professional Activities

• I serve as Steering Committee co-Chair for SIGIR-AP and General Chair of SIGIR-AP 2023
• I served as PC/SPC for SIGIR2023 Full/Short/Perspectives/Resource/Reproducibility/Tutorial papers
• I was recognized as ACM Distinguished Member for "outstanding scientific contributions to computing"
• I serve as General Co-chair of NTCIR-16
• I am on the editorial board of JASIST and Information Retrieval Journal
• I serve as co-Editor-in-Chief of Foundations and Trends@ in Information Retrieval

Selected Publications

IN THE YEAR OF 2023

• Haitao Li, Qingyao Ai, Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Zheng Liu and Zhao Cao. Constructing Tree-based Index for Efficient and Effective Dense Retrieval. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)
• Jiangui Chen, Ruqing Zhang, Jiafeng Guo, Maarten de Rijke, Yiqun Liu, Yixing Fan and Xueqi Cheng. A Unified Generative Retriever for Knowledge-Intensive Language Tasks via Prompt Learning. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)
• Haitao Li, Qingyao Ai, Jia Chen, Qian Dong, Yueyue Wu, Yiqun Liu, Chong Chen and Qi Tian. SAILER: Structure-aware Pre-trained Language Model for Legal Case Retrieval. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)
• Haitian Chen, Qingyao Ai, Zhijing Wu, Zhihong Wang, Yiqun Liu, Min Zhang, Shaoping Ma, Juan Hu, Naiqiang Tan and Hua Chai. Behavior Modeling for Point of Interest Search. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)
• Xiaohui Xie, Qian Dong, Bingning Wang, Feiyang Lv, Ting Yao, Weinan Gan, Zhijing Wu, Xiangsheng Li, Haitao Li, Yiqun Liu and Jin Ma. T2 Ranking: A large-scale Chinese Benchmark for Passage Ranking. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)
• Bulou Liu, Yiran Hu, Yueyue Wu, Yiqun Liu, Fan Zhang, Chenliang Li, Min Zhang, Shaoping Ma, and Weixing Shen. Investigating Conversational Agent Action in Legal Case Retrieval. The 45th European Conference on Information Retrieval (ECIR 2023) Preprint Version
• Yifan Wang, Weizhi Ma, Min Zhang, Yiqun Liu and Shaoping Ma. A Survey on the Fairness of Recommender Systems. ACM Transactions on Information Systems (TOIS).
• Hongyu Lu, Weizhi Ma, Yifan Wang, Min Zhang, Xiang Wang, Yiqun Liu, Tat-Seng Chua, Shaoping Ma. User Perception of Recommendation Explanation: Are Your Explanations What Users Need? ACM Transactions on Information Systems (TOIS).
• Junqi Zhang, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Jiazheng Xu, Shaoping Ma and Qi Tian. User Behavior Simulation for Search Result Re-ranking. ACM Transactions on Information Systems (TOIS). Preprint Version.
• Jie Zou, Mohammad Aliannejadi, Evangelos Kanoulas, Maria Soledad Pera and Yiqun Liu. Users Meet Clarifying Questions: Toward a Better Understanding of User Interactions for Search Clarification. ACM Transactions on Information Systems (TOIS).
• Chenyang Wang, Weizhi Ma, Chong Chen, Min Zhang, Yiqun Liu and Shaoping Ma. Sequential Recommendation with Multiple Contrast Signals. ACM Transactions on Information Systems (TOIS).