姓名：马少平
职称：教授
电话：**
邮箱：msp@tsinghua.edu.cn
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
研究领域智能信息处理, 信息检索
研究概况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。
小组主页：http://www.thuir.org/
学术成果[1] Jia Chen,Yiqun Liu, Cheng Luo, Jiaxin Mao, Min Zhang, and Shaoping Ma. Improving Session Search Performance with a Multi-MDP Model. The fourteenth Asia Information Retrieval Societies Conference (AIRS 2018).
[2] Xiangsheng Li,Yiqun Liu, Xin Li, Cheng Luo, Jian-Yun Nie, Min Zhang and Shaoping Ma Hierarchical Attention Network for Context-Aware Query Suggestion. The fourteenth Asia Information Retrieval Societies Conference (AIRS 2018)Best Paper Award
[3] Xiangsheng Li,Yiqun Liu, Jiaxin Mao, Zexue He, Min Zhang, Shaoping Ma. Understanding Reading Attention Distribution during Relevance Judgement. The 27th ACM International Conference on Information and Knowledge Management (CIKM 2018).
[4] Junqi Zhang,Yiqun Liu, Shaoping Ma, Qi Tian. Relevance Estimation with Multiple Information Sources on Search Engine Result Pages. The 27th ACM International Conference on Information and Knowledge Management (CIKM 2018). Best Overall Paper
[5] Yingying Wu,Yiqun Liu, Fei Chen, Min Zhang, and Shaoping Ma. Beyond Greedy Search: Pruned Exhaustive Search for Diversified Result Ranking. The 4th ACM SIGIR Informational Conference on the Theory of Information Retrieval, ICTIR 2018.
[6] Jiaxin Mao,Yiqun Liu, Noriko Kando, Min Zhang, Shaoping Ma. How does Domain Expertise Affect User’s Search Interaction and Outcome in Exploratory Search? Accepted by ACM Transactions on Information Systems (TOIS).
[7] Weizhi Ma, Min Zhang, Chenyang Wang, Cheng Luo,Yiqun Liuand Shaoping Ma. Your Tweets Reveal What You Like: Introducing Cross-media Content Information into Multi-domain Recommendation. The 27th International Joint Conference on Artificial Intelligence and the 23rd European Conference on Artificial Intelligence. (IJCAI-ECAI-18).
[8] Xiaochuan Wang, Ning Su, Zexue He,Yiqun Liuand Shaoping Ma. A Large-Scale Study of Mobile Search Examination Behavior. The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval. Short paper. (SIGIR 2018).
[9] Yukun Zheng, Zhen Fan,Yiqun Liu, Cheng Luo and Shaoping Ma. Sogou-QCL: A New Dataset with Click Relevance Label. The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval. Short paper. (SIGIR 2018).
[10] Mengyang Liu,Yiqun Liu, Jiaxin Mao, Cheng Luo and Shaoping Ma. Towards Designing Better Session Search Evaluation Metrics. The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval. Short paper. (SIGIR 2018). Best Short Paper Honorable Mention.
[11] Mengyang Liu,Yiqun Liu, Jiaxin Mao, Cheng Luo, Min Zhang and Shaoping Ma. "Satisfaction with Failure" or "Unsatisfied Success": Investigating the Relationship between Search Success and User Satisfaction. The Web Conference 2018 (WWW 2018).
[12] Yingying Wu,Yiqun Liu, Ke Zhou, Xiaochuan Wang, Min Zhang and Shaoping Ma. Treating Each Intent Equally? The Equilibrium of IA-Select. The Web Conference 2018. Poster paper. (WWW 2018).
[13] Ning Su,Yiqun Liu, Zhao Li, Yuli Liu, Min Zhang and Shaoping Ma. Detecting Crowdturfing "Add to Favorites" Activities in Online Shopping. The Web Conference 2018 (WWW 2018).
[14] Chong Chen, Min Zhang,Yiqun Liuand Shaoping Ma. Neural Attentional Rating Regression with Review-level Explanations. The Web Conference 2018 (WWW 2018).
[15] Jiaxin Mao,Yiqun Liu, Zexue He, Noriko Kando, Min Zhang and Shaoping Ma. A Two-Stage Model for User’s Examination Behavior in Mobile Search. The third ACM SIGIR Conference on Human Information Interaction and Retrieval (CHIIR 2018).
[16] Jiaxin Mao,Yiqun Liu, Noriko Kando, Cheng Luo, Min Zhang, Shaoping Ma. Investigating Result Usefulness in Mobile Search. The 40th European Conference on Information Retrieval(ECIR 2018)
[17] Xiaohui Xie,Yiqun Liu, Maarten de Rijke, Jiyin He, Min Zhang and Shaoping Ma. Why People Search for Images using Web Search Engines. The eleventh ACM International Conference on Web Search and Data Mining(WSDM 2018)
[18] Ning Su, Jiyin He,Yiqun Liu, Min Zhang and Shaoping Ma. User Intent, Behaviour, and Perceived Satisfaction in Product Search. The eleventh ACM International Conference on Web Search and Data Mining(WSDM 2018)
[19] Yiqun Liu, Chao Wang, Min Zhang and Shaoping Ma. User behavior modeling for better web search ranking.Frontiers in Computer Science2017.
[20] Ye Chen,Yiqun Liu, Min Zhang and Shaoping Ma. User Satisfaction Prediction with Mouse Movement Information in Heterogeneous Search Environment. IEEE Transactions on Knowledge and Data Engineering.(TKDE)
[21] Fan Zhang,Yiqun Liu, Xin Li, Min Zhang, Yinghui Xu and Shaoping Ma. Evaluating Web Search with a Bejeweled Player Model. The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval.(SIGIR2017) Best Student Paper Award
[22] Cheng Luo,Yiqun Liu, Tetsuya Sakai, Fan Zhang, Min Zhang and Shaoping Ma. Evaluating Mobile Search with Height-Biased Gain. The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval(SIGIR2017).
[23] Ye Chen, Ke Zhou,Yiqun Liu, Min Zhang and Shaoping Ma. Meta-evaluation of Online and Offline Web Search Evaluation Metrics. The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval(SIGIR2017).
[24] Xiaohui Xie,Yiqun Liu, Xiaochuan Wang, Meng Wang, Zhijing Wu, Yingying Wu, Min Zhang and Shaoping Ma. Investigating Examination Behavior of Image Search Users. The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval(SIGIR2017).
[25] Jiaxin Mao,Yiqun Liu, Huanbo Luan, Min Zhang and Shaoping Ma. Understanding and Predicting Usefulness Judgment in Web Search. (Short paper). The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval(SIGIR2017).
[26] Cheng Luo, Yukun Zheng,Yiqun Liu, Xiaochuan Wang, Jingfang Xu, Min Zhang and Shaoping Ma. SogouT-16: A New Web Corpus to Embrace IR Research. (Short paper). The 40th ACM SIGIR International Conference on Research and Development in Information Retrieval(SIGIR2017).
[27] Xiao Lin, Min Zhang, Yongfeng Zhang, Yiqun Liu and Shaoping Ma. Learning and Transferring Social and Item Visibilities for Personalized Recommendation. The 26th ACM International Conference on Information and Knowledge Management(CIKM 2017).
[28] Bin Liu, Min Zhang, Weizhi Ma, Xin Li, Yiqun Liu and Shaoping Ma. A Two-step Information Accumulation Strategy for Learning from Highly Imbalanced Data. The 26th ACM International Conference on Information and Knowledge Management(CIKM 2017).
[29] Yuli Liu,Yiqun Liu, Ke Zhou, Min Zhang and Shaoping Ma. Detecting Collusive Spamming Activities in Community Question Answering. The 26th International World Wide Web Conference(WWW 2017).
[30] Yingying Wu,Yiqun Liu, Ning Su, Shaoping Ma and Wenwu Ou. Predicting Search Satisfaction with Electrodermal Activity. The 26th International World Wide Web Conference(WWW 2017).
[31] Cheng Luo,Yiqun Liu, Tetsuya Sakai, Ke Zhou, Fan Zhang, Xue Li and Shaoping Ma. Does Document Relevance Affect the Searcher’s Perception of Time? The Tenth ACM International Conference on Web Search and Data Mining(WSDM 2017)
[32] Xin Li,Yiqun Liu, Rongjie Cai and Shaoping Ma. Investigation of User Search Behavior While Facing Heterogeneous Search Services. The Tenth ACM International Conference on Web Search and Data Mining(WSDM 2017)
[33] Cheng Luo, Xue Li,Yiqun Liu, Tetsuya Sakai, Fan Zhang, Min Zhang and Shaoping Ma. Investigating Users’ Time Perception during Web Search. The 2nd ACM SIGIR Conference on Human Information Interaction & Retrieval(CHIIR 2017).