Paper 'Scaling Laws For Dense Retrieval' won Best Paper Award at SIGIR 2024 (July 2024).
Paper 'CoSearchAgent: A Lightweight Collaborative Search Agent with Large Language Models' was nominated for Best Short Paper Award at SIGIR 2024 (July 2024).
Paper 'Learning Discrete Representations via Constrained Clustering for Effective and Efficient Dense Retrieval' won Best Paper Award at WSDM 2022 (February 2022).
Paper 'Models Versus Satisfaction: Towards a Better Understanding of Evaluation Metrics' received Best Paper Honorable Mention at SIGIR 2020 (July 2020).
Paper 'Social Influence Analysis for Microblog User based on User Behavior' received Chinese Journal of Computers Best Paper Award (2014–2018) (October 2019).
Paper 'Investigating the Reliability of Click Models' received Best Short Paper Honorable Mention at ICTIR 2019 (October 2019).
Awarded 2018 Outstanding Ph.D. Dissertation Award by Chinese Information Processing Society of China (CIPSC).
Serving as PC Co-Chair for SIGIR-AP 2024.
Serving as PhD Symposium Co-Chair for CIKM 2024.
Delivered tutorials on 'Explainable Recommendation and Search' and 'Unbiased Learning to Rank: Theory and Practice' at SIGIR, The Web Conference, and CIKM between 2018 and 2019.
Background
Currently a pre-tenure Associate Professor at the Gaoling School of Artificial Intelligence, Renmin University of China.
Research focuses on Information Retrieval, Web Search, and Applied Machine Learning.
Particularly interested in user interactions with massive web information, with emphasis on user behavior analysis in search engines, recommender systems, and AI chatbots.
Recently exploring effective and efficient dense retrieval models for ad hoc search.
Has served as ACM SIGIR Student Affairs Co-Chair since 2018 and as ACM SIGIR Student Liaison during 2017–2018.
Regular reviewer and SPC/PC member for venues including TOIS, TKDE, JASIST, SIGIR, WWW, WSDM, AAAI, CIKM, EMNLP-IJCNLP, ECIR, NLPCC, and CCIR.
Miscellany
Email: maojiaxin AT {gmail.com, ruc.edu.cn}
Official Chinese Homepage: https://gsai.ruc.edu.cn/maojiaxin