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个人简介

1982年7月毕业于清华大学计算机系,1984年10月获得清华大学计算机系硕士学位后留校任教, 1991年7月至1992年7月在日本学习,1997年6月在职获得清华大学计算机系博士学位。主要研究方向为智能信息处理和信息检索。 现任中国人工智能学会会士、副理事长,中国中文信息学会副理事长。 教育背景 工学学士 (计算机科学与技术), 清华大学, 中国, 1982 工学硕士 (计算机应用技术), 清华大学, 中国, 1984 工学博士 (计算机应用技术), 清华大学, 中国, 1997 社会兼职 清华大学智能技术与系统国家重点实验室: 主任(2004-2011) 中国人工智能学会副理事长、会士 中国中文信息学会副理事长

研究领域

我的主要研究兴趣是智能信息处理,主要集中在信息检索与Web信息挖掘等方面,尤其研究基于网络用户行为分析的语义挖掘,以改进搜索引擎的性能。 受到当前技术发展的局限,网上信息的语义分析技术还非常不成熟,距离实际应用相差甚远。而随着网络技术的发展,每天有大量的用户通过域名、网页连接、搜索引擎等方式访问网页。无论采用何种方式,每个用户的访问过程都具有一定目的性,他们的每一次点击行为,从统计意义的角度来说,都隐含了一定的语义信息。我们试图从用户行为的角度——用户浏览网页时的点击信息,挖掘出隐含在用户行为背后的有意义的语义信息,以期提高搜索引擎的性能。

近期论文

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A Survey on the Fairness of Recommender Systems Yifan Wang, Weizhi Ma, Min Zhang, Yiqun Liu, Shaoping Ma ACM Transactions on Information Systems · 07 Feb 2023 I3 Retriever: Incorporating Implicit Interaction in Pre-trained Language Models for Passage Retrieval Qian Dong, Yiding Liu, Qingyao Ai, Haitao Li, Shuaiqiang Wang, Yiqun Liu, Dawei Yin, Shaoping Ma arXiv · 01 Jan 2023 Investigating Conversational Agent Action in Legal Case Retrieval Bulou Liu, Yiran Hu, Yueyue Wu, Yiqun Liu, Fan Zhang, Chenliang Li, Min Zhang, Shaoping Ma, Weixing Shen Lecture Notes in Computer Science · 01 Jan 2023 User Perception of Recommendation Explanation: Are Your Explanations What Users Need? Hongyu Lu, Weizhi Ma, Yifan Wang, Min Zhang, Xiang Wang, Yiqun Liu, Tat-Seng Chua, Shaoping Ma ACM Transactions on Information Systems · 17 Nov 2022 Understanding Relevance Judgments in Legal Case Retrieval Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao, Shaoping Ma ACM Transactions on Information Systems · 28 Oct 2022 Evaluating Interpolation and Extrapolation Performance of Neural Retrieval Models Jingtao Zhan, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, Shaoping Ma Proceedings of the 31st ACM International Conference on Information & Knowledge Management · 17 Oct 2022 Brain Topography Adaptive Network for Satisfaction Modeling in Interactive Information Access System Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuesong Chen, Min Zhang, Shaoping Ma Proceedings of the 30th ACM International Conference on Multimedia · 10 Oct 2022 Query Generation and Buffer Mechanism: Towards a better conversational agent for legal case retrieval Bulou Liu, Yueyue Wu, Fan Zhang, Yiqun Liu, Zhihong Wang, Chenliang Li, Min Zhang, Shaoping Ma Information Processing & Management · 01 Sep 2022 Towards Representation Alignment and Uniformity in Collaborative Filtering Chenyang Wang, Yuanqing Yu, Weizhi Ma, Min Zhang, Chong Chen, Yiqun Liu, Shaoping Ma Proceedings of the 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining · 14 Aug 2022 Make Fairness More Fair Jiayin Wang, Weizhi Ma, Jiayu Li, Hongyu Lu, Min Zhang, Biao Li, Yiqun Liu, Peng Jiang, Shaoping Ma Proceedings of the 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining · 14 Aug 2022 A Survey on the Fairness of Recommender Systems Yifan Wang, Weizhi Ma, Min Zhang, Yiqun Liu, Shaoping Ma ACM Transactions on Information Systems · 09 Jul 2022 Axiomatically Regularized Pre-training for Ad hoc Search Jia Chen, Yiqun Liu, Yan Fang, Jiaxin Mao, Hui Fang, Shenghao Yang, Xiaohui Xie, Min Zhang, Shaoping Ma Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval · 06 Jul 2022 Incorporating Retrieval Information into the Truncation of Ranking Lists for Better Legal Search Yixiao Ma, Qingyao Ai, Yueyue Wu, Yunqiu Shao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval · 06 Jul 2022 Why Don't You Click: Understanding Non-Click Results in Web Search with Brain Signals Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuancheng Li, Jiaji Li, Xuesong Chen, Min Zhang, Shaoping Ma Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval · 06 Jul 2022 Leveraging Document-Level and Query-Level Passage Cumulative Gain for Document Ranking Zhi-Jing Wu, Yi-Qun Liu, Jia-Xin Mao, Min Zhang, Shao-Ping Ma Journal of Computer Science and Technology · 01 Jul 2022 LegalGNN: Legal Information Enhanced Graph Neural Network for Recommendation Jun Yang, Weizhi Ma, Min Zhang, Xin Zhou, Yiqun Liu, Shaoping Ma ACM Transactions on Information Systems · 30 Apr 2022 Towards a Better Understanding of Human Reading Comprehension with Brain Signals Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuesong Chen, Min Zhang, Shaoping Ma Proceedings of the ACM Web Conference 2022 · 25 Apr 2022 Global or Local: Constructing Personalized Click Models for Web Search Junqi Zhang, Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma, Qi Tian Proceedings of the ACM Web Conference 2022 · 25 Apr 2022 Investigating human reading behavior during sentiment judgment Xuesong Chen, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma International Journal of Machine Learning and Cybernetics · 06 Mar 2022 User Behavior Simulation for Search Result Re-ranking Junqi Zhang, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Jiazheng Xu, Shaoping Ma, Qi Tian ACM Transactions on Information Systems · 14 Feb 2022 Learning Discrete Representations via Constrained Clustering for Effective and Efficient Dense Retrieval Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, Shaoping Ma Proceedings of the Fifteenth ACM International Conference on Web Search and Data Mining · 11 Feb 2022 A Cooperative Neural Information Retrieval Pipeline with Knowledge Enhanced Automatic Query Reformulation Xiangsheng Li, Jiaxin Mao, Weizhi Ma, Zhijing Wu, Yiqun Liu, Min Zhang, Shaoping Ma, Zhaowei Wang, Xiuqiang He Proceedings of the Fifteenth ACM International Conference on Web Search and Data Mining · 11 Feb 2022 Web Search via an Efficient and Effective Brain-Machine Interface Xuesong Chen, Ziyi Ye, Xiaohui Xie, Yiqun Liu, Xiaorong Gao, Weihang Su, Shuqi Zhu, Yike Sun, Min Zhang, Shaoping Ma Proceedings of the Fifteenth ACM International Conference on Web Search and Data Mining · 11 Feb 2022 From linear to non-linear: investigating the effects of right-rail results on complex SERPs Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Advances in Computational Intelligence · 10 Jan 2022 A Survey on Dropout Methods and Experimental Verification in Recommendation Yangkun Li, Weizhi Ma, Chong Chen, Min Zhang, Yiqun Liu, Shaoping Ma, Yuekui Yang arXiv · 01 Jan 2022 WG4Rec Shaoyun Shi, Weizhi Ma, Zhen Wang, Min Zhang, Kun Fang, Jingfang Xu, Yiqun Liu, Shaoping Ma Proceedings of the 30th ACM International Conference on Information & Knowledge Management · 26 Oct 2021 Incorporating Query Reformulating Behavior into Web Search Evaluation Jia Chen, Yiqun Liu, Jiaxin Mao, Fan Zhang, Tetsuya Sakai, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 30th ACM International Conference on Information & Knowledge Management · 26 Oct 2021 Jointly Optimizing Query Encoder and Product Quantization to Improve Retrieval Performance Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, Shaoping Ma Proceedings of the 30th ACM International Conference on Information & Knowledge Management · 26 Oct 2021 Evaluating Relevance Judgments with Pairwise Discriminative Power Zhumin Chu, Jiaxin Mao, Fan Zhang, Yiqun Liu, Tetsuya Sakai, Min Zhang, Shaoping Ma Proceedings of the 30th ACM International Conference on Information & Knowledge Management · 26 Oct 2021 A Difficulty-Aware Framework for Churn Prediction and Intervention in Games Jiayu Li, Hongyu Lu, Chenyang Wang, Weizhi Ma, Min Zhang, Xiangyu Zhao, Wei Qi, Yiqun Liu, Shaoping Ma Proceedings of the 27th ACM SIGKDD Conference on Knowledge Discovery & Data Mining · 14 Aug 2021 Know Yourself: Physical and Psychological Self-Awareness With Lifelog Jiayu Li, Weizhi Ma, Min Zhang, Pengyu Wang, Yiqun Liu, Shaoping Ma Frontiers in Digital Health · 11 Aug 2021 A Hybrid Framework for Session Context Modeling Jia Chen, Jiaxin Mao, Yiqun Liu, Ziyi Ye, Weizhi Ma, Chao Wang, Min Zhang, Shaoping Ma ACM Transactions on Information Systems · 26 Jul 2021 Privacy-Aware Remote Information Retrieval User Experiments Logging Tool Hanyu Li, Hongyu Lu, Songhao Huang, Weizhi Ma, Min Zhang, Yiqun Liu, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Standing in Your Shoes: External Assessments for Personalized Recommender Systems Hongyu Lu, Weizhi Ma, Min Zhang, Maarten de Rijke, Yiqun Liu, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Investigating User Behavior in Legal Case Retrieval Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao, Min Zhang, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Optimizing Dense Retrieval Model Training with Hard Negatives Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 LeCaRD: A Legal Case Retrieval Dataset for Chinese Law System Yixiao Ma, Yunqiu Shao, Yueyue Wu, Yiqun Liu, Ruizhe Zhang, Min Zhang, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Investigating Session Search Behavior with Knowledge Graphs Xiangsheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Conversational vs Traditional: Comparing Search Behavior and Outcome in Legal Case Retrieval Bulou Liu, Yueyue Wu, Yiqun Liu, Fan Zhang, Yunqiu Shao, Chenliang Li, Min Zhang, Shaoping Ma Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval · 11 Jul 2021 Graph Heterogeneous Multi-Relational Recommendation Chong Chen, Weizhi Ma, Min Zhang, Zhaowei Wang, Xiuqiang He, Chenyang Wang, Yiqun Liu, Shaoping Ma Proceedings of the AAAI Conference on Artificial Intelligence · 18 May 2021 Toward Dynamic User Intention Chenyang Wang, Weizhi Ma, Min Zhang, Chong Chen, Yiqun Liu, Shaoping Ma ACM Transactions on Information Systems · 30 Apr 2021 Towards a Better Understanding of Query Reformulation Behavior in Web Search Jia Chen, Jiaxin Mao, Yiqun Liu, Fan Zhang, Min Zhang, Shaoping Ma Proceedings of the Web Conference 2021 · 19 Apr 2021 Topic-enhanced knowledge-aware retrieval model for diverse relevance estimation Xiangsheng Li, Jiaxin Mao, Weizhi Ma, Yiqun Liu, Min Zhang, Shaoping Ma, Zhaowei Wang, Xiuqiang He Proceedings of the Web Conference 2021 · 19 Apr 2021 Constructing a Comparison-based Click Model for Web Search Ruizhe Zhang, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the Web Conference 2021 · 19 Apr 2021 Temporal Cross-Effects in Knowledge Tracing Chenyang Wang, Weizhi Ma, Min Zhang, Chuancheng Lv, Fengyuan Wan, Huijie Lin, Taoran Tang, Yiqun Liu, Shaoping Ma Proceedings of the 14th ACM International Conference on Web Search and Data Mining · 08 Mar 2021 Temporal Cross-Effects in Knowledge Tracing Chenyang Wang, Weizhi Ma, Min Zhang, Chuancheng Lv, Fengyuan Wan, Huijie Lin, Taoran Tang, Yiqun Liu, Shaoping Ma Proceedings of the 14th ACM International Conference on Web Search and Data Mining · 08 Mar 2021 Challenges in designing a brain-machine search interface Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma ACM SIGIR Forum · 01 Dec 2020 Challenges in designing a brain-machine search interface Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma ACM SIGIR Forum · 01 Dec 2020 Learning Better Representations for Neural Information Retrieval with Graph Information Xiangsheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 29th ACM International Conference on Information & Knowledge Management · 19 Oct 2020 Learning Better Representations for Neural Information Retrieval with Graph Information Xiangsheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 29th ACM International Conference on Information & Knowledge Management · 19 Oct 2020 Investigating COVID‐19‐Related query logs of Chinese search engine users Ziyi Ye, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the Association for Information Science and Technology · 01 Oct 2020 An Analysis of BERT in Document Ranking Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Investigating Reading Behavior in Fine-grained Relevance Judgment Zhijing Wu, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Beyond User Embedding Matrix Shaoyun Shi, Weizhi Ma, Min Zhang, Yongfeng Zhang, Xinxing Yu, Houzhi Shan, Yiqun Liu, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Make It a Chorus Chenyang Wang, Min Zhang, Weizhi Ma, Yiqun Liu, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Jointly Non-Sampling Learning for Knowledge Graph Enhanced Recommendation Chong Chen, Min Zhang, Weizhi Ma, Yiqun Liu, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Preference-based Evaluation Metrics for Web Image Search Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Haitian Chen, Min Zhang, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Models Versus Satisfaction Fan Zhang, Jiaxin Mao, Yiqun Liu, Xiaohui Xie, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 Cascade or Recency Fan Zhang, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Min Zhang, Shaoping Ma Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval · 25 Jul 2020 BERT-PLI: Modeling Paragraph-Level Interactions for Legal Case Retrieval Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Ken Satoh, Min Zhang, Shaoping Ma Proceedings of the Twenty-Ninth International Joint Conference on Artificial Intelligence · 01 Jul 2020 Efficient Non-Sampling Factorization Machines for Optimal Context-Aware Recommendation Chong Chen, Min Zhang, Weizhi Ma, Yiqun Liu, Shaoping Ma Proceedings of The Web Conference 2020 · 19 Apr 2020 Leveraging Passage-level Cumulative Gain for Document Ranking Zhijing Wu, Jiaxin Mao, Yiqun Liu, Jingtao Zhan, Yukun Zheng, Min Zhang, Shaoping Ma Proceedings of The Web Conference 2020 · 19 Apr 2020 Efficient Heterogeneous Collaborative Filtering without Negative Sampling for Recommendation Chong Chen, Min Zhang, Yongfeng Zhang, Weizhi Ma, Yiqun Liu, Shaoping Ma Proceedings of the AAAI Conference on Artificial Intelligence · 03 Apr 2020 Efficient Neural Matrix Factorization without Sampling for Recommendation Chong Chen, Min Zhang, Yongfeng Zhang, Yiqun Liu, Shaoping Ma ACM Transactions on Information Systems · 18 Mar 2020 Revisiting information retrieval tasks with user behavior models by Yiqun Liu and Jiaxin Mao with Martin Vesely as coordinator Yiqun Liu, Jiaxin Mao ACM SIGWEB Newsletter · 13 Feb 2020 Investigating Examination Behavior in Mobile Search Yukun Zheng, Jiaxin Mao, Yiqun Liu, Mark Sanderson, Min Zhang, Shaoping Ma Proceedings of the 13th International Conference on Web Search and Data Mining · 20 Jan 2020 Investigating Examination Behavior in Mobile Search Yukun Zheng, Jiaxin Mao, Yiqun Liu, Mark Sanderson, Min Zhang, Shaoping Ma Proceedings of the 13th International Conference on Web Search and Data Mining · 20 Jan 2020 A Context-Aware Click Model for Web Search Jia Chen, Jiaxin Mao, Yiqun Liu, Min Zhang, Shaoping Ma Proceedings of the 13th International Conference on Web Search and Data Mining · 20 Jan 2020 User behavior modeling for Web search evaluation Fan Zhang, Yiqun Liu, Jiaxin Mao, Min Zhang, Shaoping Ma AI Open · 01 Jan 2020 An Efficient Adaptive Transfer Neural Network for Social-aware Recommendation Chong Chen, Min Zhang, Chenyang Wang, Weizhi Ma, Minming Li, Yiqun Liu, Shaoping Ma Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval · 18 Jul 2019

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