教育经历

  • 2013-2018 清华大学计算机科学与技术系 博士
  • 2009-2013 清华大学计算机科学与技术系 本科

工作经历

  • 2023-至今 中国人民大学高瓴人工智能学院 准聘副教授
  • 2020-2023 中国人民大学高瓴人工智能学院 准聘助理教授
  • 2018-2020 清华大学计算机科学与技术系博士后研究员

研究方向

信息检索；
网络搜索；
用户行为分析；
基于稠密向量的检索。

教授课程

  • 《人工智能与Python程序设计》 大一 春季学期
  • 《人工智能综合设计》 大一 夏季学期
  • 《智能信息检索导论》 大三 秋季学期

科研项目

  • 2022腾讯微信犀牛鸟专项研究计划，融合知识图谱的深度文本匹配模型，在研
  • CCF-滴滴盖亚青年学者科研基金项目，基于多任务多目标的深度神经网络地图搜索排序模型，在研
  • 美团合作项目，面向服务搜索与推荐的算法治理研究，在研
  • 自然科学基金委青年基金，基于用户行为的搜索结果全页面优化研究项目，批准号：61902209，结题
  • 华为合作项目，基于世界知识与用户知识建模的深度搜索系统研究，结题

学术论文

2023
Session Search with Pre-trained Graph Classification Model
Shengjie Ma, Chong Chen, Jiaxin Mao, Qi Tian, and Xuhui Jiang
The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2023)
下载： 论文文档
Constructing Tree-based Index for Efficient and Effective Dense Retrieval
Haitao Li, Qingyao Ai, Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Zheng Liu, and Zhao Cao
The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2023).
A Passage-Level Reading Behavior Model for Mobile Search
Zhijing Wu, Jiaxin Mao, Kedi Xu, Dandan Song, and Heyan Huang
The Web Conference 2023. (the WebConf 2023).
链接： 链接
User Behavior Simulation for Search Result Re-ranking
Junqi Zhang, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Jiazheng Xu, Shaoping Ma, and Qi Tian
ACM Transactions on Information Systems. (TOIS).
链接： 链接
Understanding Relevance Judgments in Legal Case Retrieval
Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao, and Shaoping Ma.
ACM Transactions on Information Systems. (TOIS).
链接： 链接
2022
Evaluating Interpolation and Extrapolation Performance of Neural Retrieval Models
Jingtao Zhan, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, and Shaoping Ma
The 31st ACM International Conference on Information and Knowledge Management. (CIKM 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, and Shaoping Ma
The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022).
Webformer: Pre-training with Web Pages for Information Retrieval
Yu Guo, Zhengyi Ma, Jiaxin Mao, Hongjin Qian, Xinyu Zhang, Hao Jiang, Zhao Cao, and Zhicheng Dou
The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022)
Generating Clarifying Questions with Web Search Results
Ziliang Zhao, Zhicheng Dou, Jiaxin Mao, and Ji-Rong Wen
The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2022)
Understanding the Role of Human-Inspired Heuristics for Retrieval Models
Xiangsheng Li, Yiqun Liu, Jiaxin Mao
Frontiers of Computer Science
Learning Discrete Representations via Constrained Clustering for Effective and Efficient Dense Retrieval
Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, and Shaoping Ma
The 15th ACM International Conference on Web Search and Data Mining (WSDM 2022) (Best Paper Award of WSDM 2022)
下载： 论文文档
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, and Xiuqiang He
The 15th ACM International Conference on Web Search and Data Mining (WSDM 2022)
下载： 论文文档
From linear to non-linear: investigating the effects of right-rail results on complex SERPs
Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
Advances in Computational Intelligence
User Behavior Simulation for Search Result Re-ranking
Junqi Zhang, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Jiazheng Xu, Shaoping Ma, and Qi Tian
ACM Transactions on Information Systems (TOIS)
Global or Local: Constructing Personalized Click Models for Web Search
Junqi Zhang, Yiqun Liu, Jiaxin Mao, Xiaohui Xie, Min Zhang, Shaoping Ma, and Qi Tian
to appear in The Web Conference 2022 (the WebConf 2022)
Learning Probabilistic Box Embeddings for Effective and Efficient Ranking
Lang Mei, Jiaxin Mao, Gang Guo, and Ji-Rong Wen
to appear in The Web Conference 2022 (the WebConf 2022)
下载： 论文文档
2021
Incorporating Query Reformulating Behavior into Web Search Evaluation
Jia Chen, Yiqun Liu, Jiaxin Mao, Fan Zhang, Tetsuya Sakai, Weizhi Ma, Min Zhang, and Shaoping Ma
The 30th ACM International Conference on Information and Knowledge Management (CIKM 2021)
POSSCORE: A Simple Yet Effective Evaluation of Conversational Search with Part of Speech Labelling
Zeyang Liu, Ke Zhou, Jiaxin Mao, Max Wilson
The 30th ACM International Conference on Information and Knowledge Management (CIKM 2021)
下载： 论文文档
Jointly Optimizing Query Encoder and Product Quantization to Improve Retrieval Performance
Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, and Shaoping Ma
The 30th ACM International Conference on Information and Knowledge Management (CIKM 2021)
下载： 论文文档
Evaluating Relevance Judgments with Pairwise Discriminative Power
Zhumin Chu, Jiaxin Mao, Fan Zhang, Yiqun Liu, Tetsuya Sakai, Min Zhang, and Shaoping Ma
The 30th ACM International Conference on Information and Knowledge Management (CIKM 2021)
Optimizing Dense Retrieval Model Training with Hard Negatives
Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Jiafeng Guo, Min Zhang, and Shaoping Ma
in The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021).
Investigating User Behavior in Legal Case Retrieval
Yunqiu Shao, Yueyue Wu, Yiqun Liu, Jiaxin Mao, Min Zhang, and Shaoping Ma
in The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021).
Investigating Session Search Behavior with Knowledge Graphs
Xiangsheng Li, Maarten de Rijke, Yiqun Liu, Jiaxin Mao, Weizhi Ma, Min Zhang, and Shaoping Ma
in The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2021).
A Hybrid Framework for Session Context Modeling
Jia Chen, Jiaxin Mao, Yiqun Liu, Ziyi Ye, Weizhi Ma, Chao Wang, Min Zhang, and Shaoping Ma
ACM Transactions on Information Systems (TOIS). Volume 39 Issue 3.
Learning Better Representations for Neural Information Retrieval with Graph Information
Xiangsheng Li, Jiaxin Mao, Weizhi Ma, Yiqun Liu, Min Zhang, Shaoping Ma, Zhaowei Wang, and Xiuqiang He
The Web Conference 2021. (WWW 2021) .
Towards a Better Understanding of Query Reformulation Behavior in Web Search
Jia Chen, Jiaxin Mao, Yiqun Liu, Fan Zhang, Min Zhang, and Shaoping Ma
The Web Conference 2021. (WWW 2021).
Constructing a Comparison-based Click Model for Web Search
Ruizhe Zhang, Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The Web Conference 2021. (WWW 2021) .
Unbiased Learning to Rank: Online or Offline?
Qingyao Ai, Tao Yang, Huazheng Wang, Jiaxin Mao
ACM Transactions on Information Systems (TOIS). Volume 39 Issue 2.
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
the 29th ACM International Conference on Information and Knowledge Management. (CIKM 2020).
Investigating Examination Behavior in Mobile Search
Yukun Zheng, Yiqun Liu, Jiaxin Mao, Mark Sanderson, Min Zhang, and Shaoping Ma
The 13th International Conference on Web Search and Data Mining (WSDM 2020).
A Context-Aware Click Model for Web Search
Jia Chen, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 13th International Conference on Web Search and Data Mining (WSDM 2020).
Leveraging Passage-level Cumulative Gain for Document Ranking
Zhijing Wu, Jiaxin Mao, Yiqun Liu, Jingtao Zhan, Yukun Zheng, Min Zhang, and Shaoping Ma
to appear in the Web Conference 2020 (WWW 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.
BERT-PLI: Modeling Paragraph-Level Interactions for Legal Case Retrieval
Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Ken Satoh, Min Zhang, and Shaoping Ma
to appear in the 29th International Joint Conference on Artificial Intelligence and the 17th Pacific Rim International Conference on Artificial Intelligence. (IJCAI-PRICAI 2020).
An Analysis of BERT in Document Ranking
Jingtao Zhan, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. Short Paper. (SIGIR 2020).
Investigating Reading Behavior in Fine-grained Relevance Judgment
Zhijing Wu, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. Short Paper. (SIGIR 2020).
Preference-based Evaluation Metrics for Web Image Search
Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Haitian Chen, Min Zhang, and Shaoping Ma
the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020).
Models Versus Satisfaction: Towards a Better Understanding of Evaluation Metrics
Fan Zhang, Jiaxin Mao, Yiqun Liu, Xiaohui Xie, Weizhi Ma, Min Zhang, and Shaoping Ma
the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020) (Best Paper Honorable Mention).
Cascade or Recency: Constructing Better Evaluation Metrics for Session Search
Fan Zhang, Jiaxin Mao, Yiqun Liu, Weizhi Ma, Min Zhang, and Shaoping Ma
the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2020).
2019
Grid-based Evaluation Metrics for Web Image Search
Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Yunqiu Shao, Zixin Ye
The Web Conference 2019 (WWW 2019).
Towards Context-Aware Evaluation for Image Search
Yunqiu Shao, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2019).
Investigating Passage-level Relevance and Its Role in Document-level Relevance Judgment
Zhijing Wu, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2019).
Human Behavior Inspired Machine Reading Comprehension
Yukun Zheng, Jiaxin Mao, Yiqun Liu, Zixin Ye, Min Zhang, and Shaoping Ma
The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2019).
Teach Machine How to Read: Reading Behavior Inspired Relevance Estimation
Xiangsheng Li, Jiaxin Mao, Chao Wang, Yiqun Liu, Min Zhang, and Shaoping Ma
The 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2019).
Investigating Cognitive Effects in Session-level Search User Satisfaction
Mengyang Liu, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 25th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2019).
Search Result Reranking with Visual and Structure Information Sources
Yiqun Liu, Junqi Zhang, Jiaxin Mao, Min Zhang, Shaoping Ma, Qi Tian, Yanxiong Lu, Leyu Lin
ACM Transactions on Information Systems (TOIS). Volume 37 Issue 3.
Sogou-ST: A New Dataset with Large-scale Refined Real-world Web Search Sessions
Jia Chen, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 28th ACM International Conference on Information and Knowledge Management. (CIKM 2019).
Improving Web Image Search with Contextual Information
Xiaohui Xie, Jiaxin Mao, Yiqun Liu, Maarten de Rijke, Qingyao Ai, Yufei Huang, Min Zhang, and Shaoping Ma
The 28th ACM International Conference on Information and Knowledge Management. (CIKM 2019).
Context-Aware Ranking by Constructing a Virtual Environment for Reinforcement Learning
Junqi Zhang, Jiaxin Mao, Yiqun Liu, Ruizhe Zhang, Min Zhang, Shaoping Ma, Jun Xu, and Qi Tian
The 28th ACM International Conference on Information and Knowledge Management. (CIKM 2019).
Constructing Click Model for Mobile Search with Viewport Time
Yukun Zheng, Jiaxin Mao, Yiqun Liu, Cheng Luo, Min Zhang, and Shaoping Ma. 2019.
ACM Transactions on Information Systems (TOIS). Volume 37 Issue 4.
Investigating the Reliability of Click Models
Jiaxin Mao, Zhumin Chu, Yiqun Liu, Min Zhang, and Shaoping Ma
The 5th ACM SIGIR International Conference on the Theory of Information Retrieval (ICTIR 2019) (Best Short Paper Honorable Mention).
Investigating the Learning Process in Job Search: A Longitudinal Study
Jiaxin Mao, Damiano Spina, Sargol Sadeghi, Falk Scholer, and Mark Sanderson
The 28th ACM International Conference on Information and Knowledge Management (CIKM 2019).
2018
Improving Session Search Performance with a Multi-MDP Model
Jia Chen, Yiqun Liu, Cheng Luo, Jiaxin Mao, Min Zhang, and Shaoping Ma
The fourteenth Asia Information Retrieval Societies Conference (AIRS 2018).
Understanding Reading Attention Distribution during Relevance Judgement
Xiangsheng Li, Yiqun Liu, Jiaxin Mao, Zexue He, Min Zhang, Shaoping Ma
The 27th ACM International Conference on Information and Knowledge Management (CIKM 2018).
"Satisfaction with Failure" or "Unsatisfied Success": Investigating the Relationship between Search Success and User Satisfaction
Mengyang Liu, Yiqun Liu, Jiaxin Mao, Cheng Luo, Min Zhang, and Shaoping Ma
The Web Conference 2018 (WWW 2018).
Investigating Result Usefulness in Mobile Search
Jiaxin Mao, Yiqun Liu, Noriko Kando, Cheng Luo, Min Zhang, Shaoping Ma
The 40th European Conference on Information Retrieval (ECIR 2018)
A Two-Stage Model for User’s Examination Behavior in Mobile Search
Jiaxin Mao, Yiqun Liu, Noriko Kando, Zexue He, Min Zhang, and Shaoping Ma
The third ACM SIGIR Conference on Human Information Interaction and Retrieval (CHIIR 2018)
Towards Designing Better Session Search Evaluation Metrics
Mengyang Liu, Yiqun Liu, Jiaxin Mao, Cheng Luo, and Shaoping Ma
The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval.(SIGIR 2018) (Best Short Paper Honorable Mention).
Constructing an Interaction Behavior Model for Web Image Search
Xiaohui Xie, Jiaxin Mao, Maarten de Rijke, Ruizhe Zhang, Min Zhang, and Shaoping Ma
The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2018).
Constructing Click Models for Mobile Search
Jiaxin Mao, Cheng Luo, Min Zhang, and Shaoping Ma
The 41st International ACM SIGIR Conference on Research and Development in Information Retrieval. Full paper. (SIGIR 2018).
How does Domain Expertise Affect User's Search Interaction and Outcome in Exploratory Search?
Jiaxin Mao, Yiqun Liu, Noriko Kando, Min Zhang, and Shaoping Ma
ACM Transactions on Information Systems (TOIS).
2017
Training Deep Ranking Model with Weak Relevance Labels
Cheng Luo, Yukun Zheng, Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
2017 Australasian Database Conference (ADC 2017).
Understanding and Predicting Usefulness Judgment in Web Search
Jiaxin Mao, Yiqun Liu, Huanbo Luan, Min Zhang, and Shaoping Ma
The 40th ACM SIGIR International Conference on Research on Development in Information Retrieval (SIGIR2017).
2016
How does Domain Expertise Affect Users' Search Processes in Exploratory Searches?
Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
Search As Learning 2016 workshop, co-located with ACM SIGIR 2016 (SAL2016).
Enhancing click models with mouse movement information
Zeyang Liu, Jiaxin Mao, Chao Wang, Qingyao Ai, Yiqun Liu, Jian-Yun Nie
Information Retrieval Journal, 20(1), 53-80.
When does Relevance Mean Usefulness and User Satisfaction in Web Search?
Jiaxin Mao, Yiqun Liu, Ke Zhou, Jian-Yun Nie, Min Zhang, and Shaoping Ma
The 39th ACM SIGIR International Conference on Research on Development in Information Retrieval (SIGIR2016).
2014
Social Influence Analysis for Microblog User based on User Behavior
Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
Chinese Journal of Computer. 37(4):1-10, 2014 (in Chinese) (the Chinese Journal of Computers Best Paper Award 2014-2018).
Estimating Credibility of User Clicks with Mouse Movement and Eye-tracking Information
Jiaxin Mao, Yiqun Liu, Min Zhang, and Shaoping Ma
The 3rd CCF Conference on Natural Language Processing & Chinese Computing (NLPCC2014).

荣誉奖励

  • WSDM 2022 最佳论文奖.
  • SIGIR 2020 最佳论文提名奖.
  • 计算机学报五年优秀论文奖（2014-2018）.
  • ICTIR 2019最佳短文提名奖.
  • 2018中国中文信息学会优秀博士学位论文奖.
  • SIGIR 2018最佳短文提名奖.

社会兼职

  • ACM SIGIR学生事务联合主席（Student Affairs co-Chair）；
  • 中国中文信息学会信息检索专委会 委员。

联系

电话：--

邮箱：maojiaxin AT {gmail.com, ruc.edu.cn}

个人网页：https://sites.google.com/site/maojiaxin/

办公地址：--