About me

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

Selected Publications

  • IN THE YEAR OF 2024

    • Jingtao Zhan, Qingyao Ai, Yiqun Liu, Jia Chen and Shaoping Ma. Capability-aware Prompt Reformulation Learning for Text-to-Image Generation. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Yan Fang, Jingtao Zhan, Qingyao Ai, Jiaxin Mao, Weihang Su, Jia Chen and Yiqun Liu. Scaling Laws For Dense Retrieval. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Shenghao Yang, Weizhi Ma, Peijie Sun, Qingyao Ai, Yiqun Liu, Mingchen Cai and Min Zhang. Sequential Recommendation with Latent Relations based on Large Language Model. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Qian Dong, Yiding Liu, Qingyao Ai, Zhijing Wu, Haitao Li, Yiqun Liu, Shuaiqiang Wang, Dawei Yin and Shaoping Ma. Unsupervised Large Language Model Alignment for Information Retrieval via Contrastive Feedback. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Haitao Li, Yunqiu Shao, Yueyue Wu, Qingyao Ai, Yixiao Ma and Yiqun Liu. LeCaRDv2: A Large-Scale Chinese Legal Case Retrieval Dataset. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Shaorun Zhang, Zhiyu He, Ziyi Ye, Peijie Sun, Qingyao Ai, Min Zhang and Yiqun Liu. EEG-SVRec: An EEG Dataset with User Multidimensional Affective Engagement Labels in Short Video Recommendation. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024)
    • Shenghao Yang, Weizhi Ma, Peijie Sun, Min Zhang, Qingyao Ai, Yiqun Liu and Mingchen Cai. Common Sense Enhanced Knowledge-based Recommendation with Large Language Model. The 29th International Conference on Database Systems for Advanced Applications (DASFAA 2024)
    • Yan Fang, Qingyao Ai, Jingtao Zhan, Yiqun Liu, Xiaolong Wu and Zhao Cao. Combining Multiple Supervision for Robust Zero-shot Dense Retrieval. The 38th Annual AAAI Conference on Artificial Intelligence (AAAI 2024) Preprint Version.
    • Weihang Su, Qingyao Ai, Xiangsheng Li, Jia Chen, Yiqun Liu, Xiaolong Wu and Shengluan Hou. Wikiformer: Pre-training with Structured Information of Wikipedia for Ad-hoc Retrieval. The 38th Annual AAAI Conference on Artificial Intelligence (AAAI 2024)
    • Ziyi Ye, Xiaohui Xie, Qingyao Ai, Yiqun Liu, Zhihong Wang, Weihang Su and Min Zhang. Relevance Feedback with Brain Signals. ACM Transactions on Information Systems (TOIS 2024) Preprint Version.
  • IN THE YEAR OF 2023

    • Zhumin Chu, Tetsuya Sakai, Qingyao Ai and Yiqun Liu. Chuweb21D: A Deduped English Document Collection for Web Search Tasks. Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP 2023) Preprint Version.
    • Beining Wang, Ruizhe Zhang, Yueyue Wu, Qingyao Ai, Min Zhang and Yiqun Liu. Investigating the Influence of Legal Case Retrieval Systems on Users' Decision Process. Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP 2023) Preprint Version.
    • Ruizhe Zhang, Qingyao Ai, Yueyue Wu, Yixiao Ma and Yiqun Liu. Result Diversification for Legal case Retrieval. Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP 2023) Preprint Version.
    • Yixiao Ma, Yueyue Wu, Weihang Su, Qingyao Ai, Yiqun Liu. CaseEncoder: A Knowledge-enhanced Pre-trained Model for Legal Case Encoding. The 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023) Preprint Version.
    • Yunqiu Shao, Haitao Li, Yueyue Wu, Yiqun Liu, Qinyao Ai, Jiaxin Mao, Yixiao Ma, Shaoping Ma. An Intent Taxonomy of Legal Case Retrieval. ACM Transactions on Information Systems (TOIS) Preprint Version.
    • Shenghao Yang, Chenyang Wang, Yankai Liu, Kangping Xu, Weizhi Ma, Yiqun Liu, Min Zhang, Haitao Zeng, Junlan Feng and Chao Deng. Collaborative Word-based Pre-trained Item Representation for Transferable Recommendation. The 23rd IEEE International Conference on Data Mining (ICDM 2023) Preprint Version.
    • Qingyao Ai, Ting Bai, Zhao Cao, Yi Chang, Jiawei Chen, Zhumin Chen, Zhiyong Cheng, Shoubin Dong, Zhicheng Dou, Fuli Feng, Shen Gao, Jiafeng Guo, Xiangnan He, Yanyan Lan, Chenliang Li, Yiqun Liu, Ziyu Lyu, Weizhi Ma, Jun Ma, Zhaochun Ren, Pengjie Ren, Zhiqiang Wang, Mingwen Wang, Ji-Rong Wen, Le Wu, Xin Xin, Jun Xu, Dawei Yin, Peng Zhang, Fan Zhang, Weinan Zhang, Min Zhang, Xiaofei Zhu. Information Retrieval meets Large Language Models: A strategic report from Chinese IR community. (AI Open 2023) Preprint Version.
    • Qian Dong, Yiding Liu, Qingyao Ai, Haitao Li, Shuaiqiang Wang, Yiqun Liu, Dawei Yin, Shaoping Ma. I^3 Retriever: Incorporating Implicit Interaction in Pre-trained Language Models for Passage Retrieval. The 32nd ACM International Conference on Information and Knowledge Management (CIKM 2023) Preprint Version.
    • Bulou Liu, Yiran Hu, Qingyao Ai, Yiqun Liu, Yueyue Wu, Chenliang Li and Weixing Shen. Leveraging Event Schema to Ask Clarifying Questions for Conversational Legal Case Retrieval. The 32nd ACM International Conference on Information and Knowledge Management (CIKM 2023) Preprint Version.
    • Zhiyu He, Shaorun Zhang, Peijie Sun, Jiayu Li, Xiaohui Xie, Min Zhang and Yiqun Liu. Understanding User Immersion in Online Short Video Interaction. The 32nd ACM International Conference on Information and Knowledge Management (CIKM 2023) Preprint Version.
    • Chenyang Wang, Yankai Liu, Yuanqing Yu, Weizhi Ma, Min Zhang, Yiqun Liu, Haitao Zeng, Junlan Feng and Chao Deng. Two-sided Calibration for Quality-aware Responsible Recommendation. The 17th ACM Conference on Recommender Systems (RecSys 2023) Preprint Version.
    • Yixiao Ma, Yueyue Wu, Qingyao Ai, Yiqun Liu, Yunqiu Shao, Min Zhang and Shaoping Ma. Incorporating Structural Information into Legal Case Retrieval. ACM Transactions on Information Systems (TOIS) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
    • 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) Preprint Version.
  • IN THE YEAR OF 2022

    • Shenghao Yang, Yiqun Liu, Xiaohui Xie, Min Zhang and Shaoping Ma. Enhance Performance of Ad-hoc Search via Prompt Learning. The 28th China Conference on Information Retrieval (CCIR 2022) Preprint Version.
    • Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao and Shaoping Ma. Understanding Relevance Judgments in Legal Case Retrieval. ACM Transactions on Information Systems (TOIS) Preprint Version.
    • Bulou Liu, Yueyue Wu, Fan Zhang, Yiqun Liu, Zhihong Wang, Chenliang Li, Min Zhang, Shaoping Ma. Query Generation and Buffer Mechanism: Towards a better conversational agent for legal case retrieval. Information Processing and Management (IPM). Preprint Version.
    • Zhijing Wu, Yiqun Liu, Jiaxin Mao, Min Zhang, Shaoping Ma. Leveraging Document-Level and Query-Level Passage Cumulative Gain for Document Ranking. Journal of Computer Science and Technology (JCST).Preprint Version.
    • Jingtao Zhan, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang and Shaoping Ma. Evaluating Interpolation and Extrapolation Performance of Neural Retrieval Models. The 31st ACM International Conference on Information and Knowledge Management (CIKM 2022)
    • Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuesong Chen, Min Zhang and Shaoping Ma. Brain Topography Adaptive Satisfaction Modeling for Interactive Information Access. The 30th ACM International Conference on Multimedia (MM 2022).
    • Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuancheng Li, Jiaji Li, Xuesong Chen, Min Zhang and Shaoping Ma. Why Don’t You Click: Understanding Non-Click Results in Web Search with Brain Signals. The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022). Preprint Version.
    • Yixiao Ma, Qingyao Ai, Yueyue Wu, Yunqiu Shao, Yiqun Liu, Min Zhang and Shaoping Ma. Incorporating Retrieval Information into the Truncation of Ranking Lists for Better Legal Search. The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022).
    • Jia Chen, Yiqun Liu, Yan Fang, Jiaxin Mao, Hui Fang, Shenghao Yang, Xiaohui Xie, Min Zhang and Shaoping Ma. Axiomatically Regularized Pre-training for Ad hoc Search. The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022). Preprint Version.
    • Xuesong Chen, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. Investigating human reading behavior during sentiment judgment. International Journal of Machine Learning and Cybernetics. Preprint Version.
    • Makoto P. Kato, Yiqun Liu, Noriko Kando and Charles L.A. Clarke. Report on the 15th Round of NII Testbeds and Community for Information Access Research (NTCIR-15). ACM SIGIR Forum. Vol. 55 No. 2 December 2021. Preprint Version.
    • Junqi Zhang, Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma, and Qi Tian. Global or Local: Constructing Personalized Click Models for Web Search. The Web Conference 2022. (theWebConf 2022).
    • Ziyi Ye, Xiaohui Xie, Yiqun Liu, Zhihong Wang, Xuesong Chen, Min Zhang, and Shaoping Ma. Towards a Better Understanding of Human Reading Comprehension with Brain Signals. The Web Conference 2022. (theWebConf 2022).
    • 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.
    • Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. From linear to non-linear: investigating the effects of right-rail results on complex SERPs. Advances in Computational Intelligence. Preprint Version.
    • Xuesong Chen, Ziyi Ye, Xiaohui Xie, Yiqun Liu, Xiaorong Gao, Weihang Su, Shuqi Zhu, Yike Sun, Min Zhang, and Shaoping Ma. Web Search via an Efficient and Effective Brain-Machine Interface. The 15th ACM International Conference on Web Search and Data Mining. (WSDM 2022). Preprint Version.
    • Xiangsheng Li, Jiaxin Mao, Weizhi Ma, Zhijing Wu, Yiqun Liu, Min Zhang, Shaoping Ma, Zhaowei Wang and Xiuqiang He. A Cooperative Neural Information Retrieval Pipeline with Knowledge Enhanced Automatic Query Reformulation. The 15th ACM International Conference on Web Search and Data Mining. (WSDM 2022). Preprint Version.
    • Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang and Shaoping Ma. Learning Discrete Representations via Constrained Clustering for Effective and Efficient Dense Retrieval. The 15th ACM International Conference on Web Search and Data Mining. (WSDM 2022). Preprint Version. Best Paper Award
    • Xiangsheng Li, Yiqun Liu, Jiaxin Mao. Understanding the Role of Human-Inspired Heuristics for Retrieval Models. Frontiers of Computer Science. Preprint Version.
  • IN THE YEAR OF 2021

    • Zhumin Chu, Jiaxin Mao, Fan Zhang, Yiqun Liu, Tetsuya Sakai, Min Zhang and Shaoping Ma. Evaluating Relevance Judgments with Pairwise Discriminative Power. The 30th ACM International Conference on Information and Knowledge Management. (CIKM 2021). Preprint Version.
    • Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang and Shaoping Ma. Jointly Optimizing Query Encoder and Product Quantization to Improve Retrieval Performance. The 30th ACM International Conference on Information and Knowledge Management. (CIKM 2021). Preprint Version.
    • Jia Chen, Yiqun Liu, Jiaxin Mao, Fan Zhang, Tetsuya Sakai, Weizhi Ma, Min Zhang and Shaoping Ma. Incorporating Query Reformulating Behavior into Web Search Evaluation. The 30th ACM International Conference on Information and Knowledge Management. (CIKM 2021). Preprint Version.
    • Bulou Liu, Yueyue Wu, Yiqun Liu, Fan Zhang, Yunqiu Shao, Chenliang Li, Min Zhang and Shaoping Ma. Conversational vs Traditional: Comparing Search Behavior and Outcome in Legal Case Retrieval. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021). Preprint Version.
    • Xiangsheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang and Shaoping Ma. Investigating Session Search Behavior with Knowledge Graphs. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. Short Paper. (SIGIR 2021). Preprint Version.
    • Yixiao Ma, Yunqiu Shao, Yueyue Wu, Yiqun Liu, Ruizhe Zhang, Min Zhang, Shaoping Ma. LeCaRD: A Legal Case Retrieval Dataset for Chinese Law System. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021). Preprint Version.
    • Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang and Shaoping Ma. Optimizing Dense Retrieval Model Training with Hard Negatives. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021). Preprint Version.
    • Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao, Min Zhang and Shaoping Ma. Investigating User Behavior in Legal Case Retrieval. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021). Preprint Version.
    • Honyu Lu, Weizhi Ma, Min Zhang, Maarten de Rijke, Yiqun Liu and Shaoping Ma. Standing in Your Shoes: External Assessments for Personalized Recommender Systems. The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021). Preprint Version.
    • Zhumin Chen, Xueqi Cheng, Shoubin Dong, Zhicheng Dou, Jiafeng Guo, Xuanjing Huang, Yanyan Lan, Chenliang Li, Ru Li, Tie-Yan Liu, Yiqun Liu, Jun Ma, Bing Qin, Mingwen Wang, Ji-Rong Wen, Jun Xu, Min Zhang, Peng Zhang, Qi Zhang. Information retrieval: a view from the Chinese IR community. Frontiers Comput. Sci. 15(1): 151601 (2021)
    • Fan Zhang, Yiqun Liu, Jiaxin Mao, Min Zhang and Shaoping Ma. User behavior modeling for Web search evaluation. AI Open. Preprint Version.
    • Jia Chen, Jiaxin Mao, Yiqun Liu, Ziyi Ye, Weizhi Ma, Chao Wang, Min Zhang and Shaoping Ma. A Hybrid Framework for Session Context Modeling. ACM Transactions on Information Systems (TOIS). Preprint Version.
    • Ruizhe Zhang, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. Constructing a Comparison-based Click Model for Web Search. The Web Conference 2021. (theWebConf 2021). Preprint Version.
    • Xiangsheng Li, Jiaxin Mao, Weizhi Ma, Yiqun Liu, Min Zhang, Shaoping Ma, Zhaowei Wang and Xiuqiang He. Topic-enhanced knowledge-aware retrieval model for diverse relevance estimation. The Web Conference 2021. (theWebConf 2021). Preprint Version.
    • Jia Chen, Jiaxin Mao, Yiqun Liu, Fan Zhang, Min Zhang and Shaoping Ma. Towards a Better Understanding of Query Reformulation Behavior in Web Search. The Web Conference 2021. (theWebConf 2021). Preprint Version. Video
    • Chenyang Wang, Weizhi Ma, Min Zhang, Chuancheng Lv, Fengyuan Wan, Huijie Lin, Taoran Tang, Yiqun Liu and Shaoping Ma. Temporal Cross-Effects in Knowledge Tracing. The 14th ACM International Conference on Web Search and Data Mining. (WSDM 2021). Preprint Version.
  • IN THE YEAR OF 2020

    • Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma. Challenges in Designing a Brain-Machine Search Interface. ACM SIGIR Forum. Vol. 54 No. 2 December 2020. Preprint Version.
    • Chenyang Wang, Weizhi Ma, Min Zhang, Chong Chen, Yiqun Liu and Shaoping Ma. Towards Dynamic User Intention: Temporal Evolutionary Effects of Item Relations in Sequential Recommendation. ACM Transactions on Information Systems (TOIS).
    • Chong Chen, Min Zhang, Weizhi Ma, Yongfeng Zhang, Yiqun Liu and Shaoping Ma. Efficient Heterogeneous Collaborative Filtering without Negative Sampling for Recommendation. Proceedings of the AAAI Conference on Artificial Intelligence (AAAI 2020). Preprint Version.
    • Chong Chen, Min Zhang, Yongfeng Zhang, Yiqun Liu and Shaoping Ma. Efficient Neural Matrix Factorization without Sampling for Recommendation. ACM Transactions on Information Systems (TOIS). Volume 38 Issue 2. Preprint Version.
    • Ziyi Ye, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma. Investigating COVID-19-Related Query Logs of Chinese Search Engine Users. Poster. (ASIS&T 2020). Dataset.
    • XiangSheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang, Shaoping Ma. Learning Better Representations for Neural Information Retrieval with Graph Information. to appear in the 29th ACM International Conference on Information and Knowledge Management. (CIKM 2020). Preprint Version.
    • Jie Zou, Evangelos Kanoulas, Yiqun Liu. An Empirical Study on Clarifying Question-Based Systems. to appear in the 29th ACM International Conference on Information and Knowledge Management. (CIKM 2020). Preprint Version.
    • Fan Zhang, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Min Zhang, and Shaoping Ma. Cascade or Recency: Constructing Better Evaluation Metrics for Session Search. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020). Preprint Version.
    • Fan Zhang, Jiaxin Mao, Yiqun Liu, Xiaohui Xie, Weizhi Ma, Min Zhang, and Shaoping Ma. Models Versus Satisfaction: Towards a Better Understanding of Evaluation Metrics. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020). Preprint Version. Best Paper Honorable Mention
    • Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Haitian Chen, Min Zhang, and Shaoping Ma. Preference-based Evaluation Metrics for Web Image Search. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020). Preprint Version.
    • Chong Chen, Min Zhang, Weizhi Ma, Yiqun Liu, and Shaoping Ma. Jointly Non-Sampling Learning for Knowledge Graph Enhanced Recommendation. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020).
    • Chenyang Wang, Weizhi Ma, Min Zhang, Yiqun Liu, and Shaoping Ma. Make It a Chorus: Knowledge- and Time-aware Item Modeling for Sequential Recommendation. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020).
    • Shaoyun Shi, Weizhi Ma, Min Zhang, Yongfeng Zhang, Xinxing Yu, Houzhi Shan, Yiqun Liu, and Shaoping Ma. Beyond User Embedding Matrix: Learning to Hash for Modeling Large-Scale Users in Recommendation. The the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020).
    • Zhijing Wu, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma. Investigating Reading Behavior in Fine-grained Relevance Judgment. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. Short Paper. (SIGIR 2020). Preprint Version.
    • Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma. An Analysis of BERT in Document Ranking. The 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. Short Paper. (SIGIR 2020). Preprint Version.
    • Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Ken Satoh, Min Zhang, and Shaoping Ma. BERT-PLI: Modeling Paragraph-Level Interactions for Legal Case Retrieval. The 29th International Joint Conference on Artificial Intelligence and the 17th Pacific Rim International Conference on Artificial Intelligence. (IJCAI-PRICAI 2020).
    • Yiqun Liu, Jiaxin Mao."Revisiting information retrieval tasks with user behavior models" by Yiqun Liu and Jiaxin Mao with Martin Vesely as coordinator. ACM SIGWEB Newsletter. Preprint Version.
    • Zhijing Wu, Jiaxin Mao, Yiqun Liu, Jingtao Zhan, Yukun Zheng, Min Zhang, and Shaoping Ma. Leveraging Passage-level Cumulative Gain for Document Ranking. the Web Conference 2020. (WWW 2020). Preprint Version. Dataset. Code.
    • Chong Chen, Min Zhang, Weizhi Ma, Yiqun Liu, and Shaoping Ma. Efficient Non-Sampling Factorization Machines for Optimal Context-Aware Recommendation. the Web Conference 2020. (WWW 2020).
    • Jia Chen, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma. A Context-Aware Click Model for Web Search. The 13th International Conference on Web Search and Data Mining. (WSDM 2020). Preprint Version.
    • Yukun Zheng, Jiaxin Mao, Yiqun Liu, Mark Sanderson, Min Zhang, and Shaoping Ma. Investigating Examination Behavior in Mobile Search. The 13th International Conference on Web Search and Data Mining. (WSDM 2020). Preprint Version.

    IN THE YEAR OF 2019

    • Makoto P. Kato, Yiqun Liu, Noriko Kando, and Charles L. A. Clarke. NII Testbeds and Community for Information Access Research. 14th International Conference, NTCIR 2019 Revised Selected Papers (NTCIR 2019). Link.
    • Zhumin Chen, Xueqi Cheng, Shoubin Dong, Zhicheng Dou, Jiafeng Guo, Xuanjing Huang, Yanyan Lan, Chenliang Li, Ru Li, Tie-Yan Liu, Yiqun Liu, Jun Ma, Bing Qin, Mingwen Wang, Jirong Wen, Jun Xu, Min Zhang, Peng Zhang, Qi Zhang. Information Retrieval: A View from the Chinese IR Community. Front. Comput. Sci. Link.
    • Jiaxin Mao, Zhumin Chu, Yiqun Liu, Min Zhang, and Shaoping Ma. Investigating the Reliability of Click Models. The 5th ACM SIGIR International Conference on the Theory of Information Retrieval (ICTIR 2019) (Best Short Paper Honorable Mention). Preprint Version.
    • Yukun Zheng, Jiaxin Mao, Yiqun Liu, Cheng Luo, Min Zhang, and Shaoping Ma. 2019. Constructing Click Model for Mobile Search with Viewport Time. ACM Transactions on Information Systems (TOIS). Volume 37 Issue 4.Preprint Version.
    • Junqi Zhang, Jiaxin Mao, Yiqun Liu, Ruizhe Zhang, Min Zhang, Shaoping Ma, Jun Xu and Qi Tian. Context-Aware Ranking by Constructing a Virtual Environment for Reinforcement Learning. The 28th ACM International Conference on Information and Knowledge Management. (CIKM 2019). Preprint Version. Dataset.
    • Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Qingyao Ai, Yufei Huang, Min Zhang and Shaoping Ma. Improving Web Image Search with Contextual Information. The 28th ACM International Conference on Information and Knowledge Management. (CIKM 2019). Preprint Version.
    • Jia Chen, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. TianGong-ST: A New Dataset with Large-scale Refined Real-world Web Search Sessions. The 28th ACM International Conference on Information and Knowledge Management. Short paper. (CIKM 2019). Preprint Version. Dataset.
    • Mengyang Liu, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. Investigating Cognitive Effects in Session-level Search User Satisfaction. The 25th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. (KDD 2019). Preprint Version.
    • Yiqun Liu, Junqi Zhang, Jiaxin Mao, Min Zhang, Shaoping Ma, Qi Tian, Yanxiong Lu, Leyu Lin. Search Result Reranking with Visual and Structure Information Sources. ACM Transactions on Information Systems (TOIS). Volume 37 Issue 3.Preprint Version.
    • Xiangsheng Li, Jiaxin Mao, Chao Wang, Yiqun Liu, Min Zhang and Shaoping Ma. Teach Machine How to Read: Reading Behavior Inspired Relevance Estimation. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Long paper. (SIGIR 2019). Preprint Version.
    • Yukun Zheng, Jiaxin Mao, Yiqun Liu, Zixin Ye, Min Zhang and Shaoping Ma. Human Behavior Inspired Machine Reading Comprehension. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Long paper. (SIGIR 2019). Preprint Version. Dataset.
    • Zhijing Wu, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. Investigating Passage-level Relevance and Its Role in Document-level Relevance Judgment. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Long paper. (SIGIR 2019). Preprint Version. Corrections. Dataset.
    • Chong Chen, Min Zhang, Chenyang Wang, Weizhi Ma, Minming Li, Yiqun Liu and Shaoping Ma. An Efficient Adaptive Transfer Neural Network for Social-aware Recommendation. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Long paper. (SIGIR 2019). Preprint Version.
    • Hongyu Lu, Min Zhang, Wezhi Ma, Ce Wang, Feng Xia, Yiqun Liu, Leyu Lin and Shaoping Ma. Effects of User Negative Experience in Mobile News Streaming. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Long paper. (SIGIR 2019). Preprint Version.
    • Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Min Zhang and Shaoping Ma. Towards Context-Aware Evaluation for Image Search. The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval. Short paper. (SIGIR 2019). Preprint Version.
    • Zhijing Wu, Ke Zhou, Yiqun Liu, Min Zhang, Shaoping Ma. Does Diversity Affect User Satisfaction in Image Search. ACM Transactions on Information Systems (TOIS). Preprint Version.
    • Fuli Feng, Xiangnan He, Xiang Wang, Cheng Luo, Yiqun Liu, Tat-Seng Chua. Temporal Relational Ranking for Stock Prediction. ACM Transactions on Information Systems (TOIS) 37, no. 2 (2019): 27. Preprint Version.
    • Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Yunqiu Shao, Zixin Ye. Grid-based Evaluation Metrics for Web Image Search. The Web Conference 2019 (WWW 2019). Preprint Version.
    • Shao, Yunqiu, Yiqun Liu, Fan Zhang, Min Zhang, and Shaoping Ma. On Annotation Methodologies for Image Search Evaluation. ACM Transactions on Information Systems (TOIS) 37, no. 3 (2019): 29. Preprint Version.
    • Weizhi Ma, Min Zhang, Yue Cao, Woojeong Jin, Chenyang Wang, Yiqun Liu, Shaoping Ma and Xiang Ren. Jointly Learning Explainable Rules for Recommendation with Knowledge Graph Web Mining. The Web Conference 2019 (WWW 2019). Preprint Version.
    • Hongyu Lu, Min Zhang, Weizhi Ma, Yunqiu Shao, Yiqun Liu and Shaoping Ma. Quality Effects on User Preferences and Behaviors in Mobile News Streaming User Modeling. The Web Conference 2019 (WWW 2019).Preprint Version.
    • Chenyang Wang, Min Zhang, Weizhi Ma, Yiqun Liu and Shaoping Ma. Modeling Item-Specific Characteristics of Repeat Consumption for Recommender Systems. The Web Conference 2019 (WWW 2019). Preprint Version.
    • Chong Chen, Min Zhang, Yiqun Liu and Shaoping Ma. Social Attentional Memory Network: Modeling Aspect- and Friend-level Differences in Recommendation. The 12th ACM International Conference on Web Search and Data Mining (WSDM 2019).
    • Zhijing Wu, Yiqun Liu, Qianfan Zhang, Kailu Wu, Min Zhang and Shaoping Ma. The influence of image search intents on user behavior and satisfaction. The 12th ACM International Conference on Web Search and Data Mining (WSDM 2019). Preprint Version. Datasets.
    • Yingying Wu, Yiqun Liu, Yen-Hsi Richard Tsai, Shing-Tung Yau. Investigating the Role of Eye Movements and Physiological Signals in Search Satisfaction Prediction Using Geometric Analysis. Journal of the Association for Information Science and Technology (JASIST) 2019. Preprint Version.

    IN THE YEAR OF 2018

    • 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). Preprint Version.
    • 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). Preprint Version. Best Paper Award
    • 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). Preprint Version. Datasets
    • 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). Preprint Version. Datasets. Best Overall Paper
    • 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. (Best Paper Nomination) Preprint Version.
    • Yiqun Liu, Makoto P. Kato, Charles L.A. Clarke, Noriko Kando, Tetsuya Sakai. Report on NTCIR-13: The Thirteenth Round of NII Testbeds and Community for Information Access Research. ACM SIGIR Forum. Vol. 52 No. 1 June 2018. Preprint Version.
    • 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). Preprint Version.
    • Weizhi Ma, Min Zhang, Chenyang Wang, Cheng Luo, Yiqun Liu and 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). Preprint Version.
    • Xiaochuan Wang, Ning Su, Zexue He, Yiqun Liu and 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). Preprint Version.
    • 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). Preprint Version. Datasets.
    • 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). Preprint Version. Dataset. Best Short Paper Honorable Mention.
    • 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). Preprint Version. Datasets.
    • 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). Preprint Version.
    • 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). Preprint Version.
    • Fuli Feng, Xiangnan He, Yiqun Liu, Liqiang Nie and Tat-Seng Chua. Learning on Partial-Order Hypergraphs. The Web Conference 2018 (WWW 2018). Preprint Version.
    • Chong Chen, Min Zhang, Yiqun Liu and Shaoping Ma. Neural Attentional Rating Regression with Review-level Explanations. The Web Conference 2018 (WWW 2018). Preprint Version.
    • 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). Preprint Version.
    • 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) Preprint Version
    • 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) Preprint Version
    • 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) Preprint Version
  • IN THE YEAR OF 2017

    • Xiangsheng Li, Cheng Luo, Yiqun Liu and Shaoping Ma. Chinese Translation of SIGIR Forum 2017 special issue (with the permission of orginal editors/authors).
    • Yiqun Liu, Chao Wang, Min Zhang and Shaoping Ma. User behavior modeling for better web search ranking. Frontiers in Computer Science 2017. Preprint Version.
    • Yiqun Liu, Yi Chang and Jian-Yun Nie. Constructing click models for search users. Information Retrieval Journal, 20(1), 1-3. Online Version.
    • 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) Preprint Version
    • 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. Preprint Version Best Student Paper Award
    • 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). Preprint Version
    • 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). Preprint Version Data Description Dataset
    • 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). Preprint Version. Dataset
    • 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). Preprint Version
    • 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). Preprint Version
    • Zeyang Liu, Jiaxin Mao, Chao Wang, Qingyao Ai, Yiqun Liu, Jian-Yun Nie. Enhancing click models with mouse movement information. Information Retrieval Journal, 20(1), 53-80. Preprint Version.
    • 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).
    • 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).
    • 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). Preprint PDF Dataset
    • 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). Preprint PDF
    • 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) Preprint PDF
    • 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) Preprint PDF Dataset
    • 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). Preprint PDF
  • See my previous publications (before 2017).

Recent Slides

Past Professional Activities:

My Students

Current Students

  • Donghai Li, sixth year PhD student. He focuses on legal search technologies.
  • Zhumin Chu, fifth year PhD student. He focuses on click model evaluation and annotation evaluation.
  • Ruizhe Zhang, fifth year PhD student. He focuses on web search technologies.
  • Jingtao Zhan, fourth year PhD student. He focuses on explanability and efficiency about search technologies.
  • Ziyi Ye, fourth year PhD student. He focuses on domain search and user behavior analysis.
  • Bulou Liu, fourth year PhD student. He focuses on conversational search and legal case retrieval.
  • Haitian Chen, third year PhD student. He focuses on point of interest search.
  • Shaorun Zhang, third year master student. He focuses on brain-machine interface for search.
  • Shenghao Yang, third year master student. He focuses on web search technologies.
  • Shuqi Zhu, second year PhD student. He focuses on brain-machine interface for search.
  • Weihang Su, second year PhD student. He focuses on web search technologies.
  • Qian Dong, second year PhD student. He focuses on web search technologies.
  • Haitao Li, second year master student. He focuses on web search technologies.
  • Beining Wang, first year PhD student. He focuses on web search technologies.
  • Bangde Du, first year PhD student. He focuses on brain-machine interface for search.

Graduated Students

  • Jia Chen, graduated PhD. She is now an algorithm engineer at Xiaohongshu.inc.
  • Yunqiu Shao, graduated PhD. She is now working in J.P. Morgan as a quantitative researcher.
  • Yixiao Ma, graduated master. He is now an engineer at Huawei Inc.
  • Xuesong Chen, graduated master. He is now an engineer at Wuji Inc.
  • Junqi Zhang, graduated PhD. He is now working in AtomEcho Inc.
  • Xiangsheng Li, graduated PhD. He is now an algorithm researcher at Tencent Inc.
  • Zhijing Wu, graduated PhD. She is now an assistant professor at School of Computer Science and Technology in Beijing Institute of Technology, Beijing, China.
  • Xiaohui Xie, graduated PhD. He is now a postdoc researcher at Tsinghua University, Beijing, China.
  • Fan Zhang, graduated PhD. He is now an associate professor at School of Information Management in Wuhan University, Wuhan, China.
  • Xinyi Cai, graduated master, working in Longfor Group.
  • Weixuan Wu, graduated master. He is now an algorithm engineer at iHuman Inc.
  • Mengyang Liu, graduated master. He is now a board chairman assistant at Hengrui International Education.
  • Yukun Zheng, graduated master. He is now an algorithm engineer at Alibaba Inc.
  • Yuli Liu, graduated master, working in Qinghai University as a lecturer. His research interests are mainly about Web data quality, user behavior analysis.
  • Zeyang Liu, graduated master. He is currently a PhD student at University of Nottingham.
  • Ye Chen, graduated master. He is now working at J.P. Morgan as a quantitative trading researcher.
  • Ning Su, graduated master. He is now a software engineer at Sogou Inc.

Datasets

Many of released datasets are located at the website of Tiangong AI Research Center (in Chinese). For example, we have a web corpus and a image dataset. Here are some datasets which are used in our recent studies:

  • TianGong-CRL Dataset. in our ASIST'20 Poster Investigating COVID-19-Related Query Logs of Chinese Search Engine Users.
  • Image Annotation Dataset. in our TOIS (2019) paper On Annotation Methodologies for Image Search Evaluation
  • User Behavior Dataset. in our WSDM'19 paper The influence of image search intents on user behavior and satisfaction.
  • Reading Attention Dataset. in our CIKM'18 paper Understanding Reading Attention Distribution during Relevance Judgement.
  • SRR Dataset. in our CIKM'18 paper Relevance Estimation with Multiple Information Sources on Search Engine Result Pages
  • Sogou-QCL Dataset. in our SIGIR'18 paper Sogou-QCL: A New Dataset with Click Relevance Label
  • SearchSuccess Dataset. in our WWW'18 paper "Satisfaction with Failure" or "Unsatisfied Success": Investigating the Relationship between Search Success and User Satisfaction.