Zhaochun Ren (任昭春)

The Data Science Lab


10th Floor, A zone, North Star Century Center, Beijing, China

E-mail: renzhaochun@jd.com

Personal Introduction

    I'm now working as a senior research manager in the data science lab at JD.com. Prior to joining JD, I was a research associate in University College London, working with Prof. Ingemar Cox. I got my PhD from University of Amsterdam, supervised by Prof. Dr. Maarten de Rijke. I am interested in information retrieval, social media mining and content analysis in e-discovery. Before joining UvA, I received my B.E and M.Sc from Shandong University in 2009 and 2012 respectively, and worked as a short-term visiting scholar in Max-Planck-Institut für Informatik, 2012.

Work Experience

  • 2012.04 - 2012.08: Visiting Scholar in Max-Planck-Institut für Informatik, Saarbrücken, Germany.
  • 2016.09 - 2017.02: Research Associate in University College London, supervised by Prof. Ingemar Cox.
  • 2017.03 - 2017.12: Research Scientist in the Data Science Lab at JD.com, China. 
  • 2018.01 - present: Senior Research Manager at JD.com, China. 


Research Interests

  • Information Retrieval
    • Content analysis in social media
    • Semantic search in e-discovery
    • Learning to rank
    • Search results diversification
  • Machine Learning
    • Transfer learning
    • Graphical models
    • Active learning

Selected Publications

  • Shangsong Liang, Xiangliang Zhang, Zhaochun Ren, Evangelos Kanoulas Dynamic Embeddings for User Profiling in Twitter. In KDD'18London, UK, 2018.
  • Gaurav Pandey, Zhaochun Ren, Shuaiqiang Wang, Jari Veijalainen, Maarten de RijkeLinear feature extraction for ranking. In Information Retrieval Journal2018. Accepted.
  • Wenqiang Lei, Xisen Jin, Zhaochun Ren, Xiangnan He, Min-Yen Kan, Dawei YinSequicity: Simplifying Task-oriented Dialogue Systems with Single Sequence-to-Sequence Architectures. In ACL'18Melbourne, Australia, 2018.
  • Shuman Liu, Hongshen Chen, Zhaochun Ren, Yang Feng, Dawei YinKnowledge Diffusion for Neural Dialogue Generation. In ACL'18Melbourne, Australia, 2018.
  • Pengjie Ren, Zhumin Chen, Zhaochun RenLiqiang Nie, Furu Wei, Jun Ma, Maarten de Rijke. Sentence Relations for Extractive Summarization with Deep Neural Networks. In TOIS,  Accepted. 2018.
  • Zhaochun Ren* (co-first author)Hongshen Chen, Jiliang Tang, Yihong Eric Zhao, Dawei Yin. Hierarchical Variational Memory Network for Dialogue Generation. In WWW'18Lyon, France, 2018.
  • Zhaochun Ren* (co-first author)Yao Ma, Ziheng Jiang, Jiliang Tang, Dawei Yin. Multi-dimensional network embedding with hierarchical structures. In WSDM'18Los Angeles, USA, 2018. 
  • Shangsong Liang, Ilya Markov, Zhaochun Ren, Maarten de RijkeManifold Learning for Rank Aggregation. In WWW'18Lyon, France, 2018.
  • Zihan Wang, Ziheng Jiang, Zhaochun RenJiliang Tang, Dawei Yin. A Path-constrained Framework for Discriminating Substitutable and Complementary Products in E-commerce. In WSDM'18Los Angeles, USA, 2018. (Best Student Paper Award)
  • Jing Li, Pengjie Ren, Zhumin Chen, Zhaochun RenJun Ma. Neural Attentive Session-based Recommendation. In CIKM'17Singapore 2017. (Best Full Paper Runner Up Award)
  • Pengjie Ren, Zhumin Chen, Zhaochun RenFuru Wei, Jun Ma, Maarten de Rijke. Leveraging Contextual Sentence Relations for Extractive Summarization Using a Neural Attention Model. In SIGIR'17Tokyo, Japan 2017.
  • Piji Li, Zihao Wang, Zhaochun RenLidong Bing, Wai Lam. Neural Rating Regression with Abstractive Tips Generation for Recommendation. In SIGIR'17Tokyo, Japan 2017.
  • Bin Zhou, Vasileios Lampos, Shangsong Liang, Zhaochun RenEmine Yilmaz, Ingemar Cox. A Concept Language Model for Ad-hoc Search. In WWW'17Perth, Australia, 2017.
  • Shangsong Liang, Zhaochun RenEmine Yilmaz, Evangelos Kanoulas. Collaborative User Clustering for Short Text Streams. In AAAI'17, San Francisco, 2017.
  • Shangsong Liang, Zhaochun Ren* (corresponding author)Yukun Zhao, Jun Ma, Maarten de Rijke. Inferring Dynamic User Interests in Streams of Short Text for User Clustering. In TOIS , 2017
  • Piji Li, Zihao Wang, Wai Lam, Zhaochun Ren, Lidong BingSalience Estimation via Variational Auto-Encoders for Multi-Document Summarization. In AAAI'17, San Francisco, 2017.
  • Zhaochun Ren*(co-first author), Hongya Song, Shangsong Liang, Piji Li, Jun Ma, Maarten de RijkeSummarizing Answers in Non-Factoid Community Question-Answering. In WSDM'17, Cambridge, 2017.
  • Shangsong Liang, Fei Cai, Zhaochun Ren Maarten de Rijke. Efficient Structured Learning for Personalized Diversification. In TKDE, 2016.
  • Zhaochun Ren, Shangsong Liang, Piji Li, Shuaiqiang Wang, Maarten de Rijke. Social Collaborative Viewpoint Regression with Explainable Recommendations. In WSDM'17, Cambridge, 2017.
  • Yafang Wang, Zhaochun Ren, Martin Theobald, Maximilian Dylla, Gerard de Melo Summary Generation for Temporal Extractions. In DEXA, 2016.
  • Pengjie Ren, Zhumin Chen, Jun Ma, Shuaiqiang Wang, Zhiwei Zhang, Zhaochun Ren User Session Level Diverse Reranking of Search Results. In Neurocomputing, 2016.
  • Pengjie Ren, Zhumin Chen, Jun Ma, Shuaiqiang Wang, Zhiwei Zhang, Zhaochun Ren. Mining and Ranking Users' Intents behind Queries. In Information Retrieval Journal, in press. DOI: 10.1007/s10791-015-9271-1.
  • Shangsong Liang, Zhaochun Ren, Wouter Weerkamp, Edgar Meij, Maarten de Rijke. Time-Aware Rank Aggregation for Microblog Search. In CIKM'14, Shanghai, 2014.
  • Shangsong Liang, Zhaochun Ren, Maarten de Rijke. Personalized Search Result Diversification via Structured Learning. In KDD'14, New York, 2014.
  • Shangsong Liang, Zhaochun Ren, Maarten de Rijke. Fusion Helps Diversification. In SIGIR'14, Gold coast, 2014.


  • Zhaochun Ren, Xiangnan He, Dawei Yin, Maarten de Rijke. Information Discovery in E-commerce. In SIGIR'18Ann Arbor, USA, 2018.

Scholarships and Awards

  • WSDM 2018 best student paper award
  • CIKM 2017 best full paper runner up award
  • 2016 Chinese Government Award for Outstanding Self-Financed Students Abroad (国家自费留学生奖学金)
  • SIGIR 2015 student travel grant
  • SIGIR 2014 student travel grant
  • SIGIR 2013 student travel grant
  • The Innovation Scholarship, Shandong University, 2010
  • Scholarship of Shandong University for Undergraduates, 2006-2008
  • Weichai Power Scholarship, Shandong University, 2007

Competition Awards

  • First-Class Award of China Graduate Mathematical Contest in Modeling (CGMCM), 2010, (Top 3%)
  • First-Class Award of China UndergraduateMathematical Contest inModeling(CUMCM) of Shandong Province, 2008
  • Honorable Mentions of Mathematical Contest in Modeling, 2008

Professional Activities

  • Editorial board member, Journal of Information Processing and Management (IPM)
  • Publicity Co-chair, WSDM 2018
  • Program committee, WSDM 2019
  • Program committee, COLING 2018
  • Program committee, EMNLP 2018
  • Program committee, CIKM 2018
  • Program committee, SIGIR 2018
  • Program committee, ACL 2018
  • Program committee, WWW 2018
  • Workshop committee, WSDM 2018
  • Program committee, WSDM 2018
  • Program committee, CIKM 2017
  • Program committee, ACL 2017
  • Program committee, SIGIR 2017
  • Short paper committee, SIGIR 2017
  • Program committee, EACL 2017
  • Program committee, AIRS 2016
  • Program committee, CCL 2016
  • Short paper committee, SIGIR 2016
  • Program committee, ACL 2016
  • Program committee, CIKM 2015
  • Short paper committee, SIGIR 2015
  • Proceedings chair, ECIR 2014
  • Information director, ACM Transactions on Information Systems (ACM TOIS), 2014-2017
  • Reviewer, ACM Transactions on Information Systems (ACM TOIS), 2014, 2015, 2016
  • Reviewer, Journal of Information Processing and Management (IPM), 2013, 2014, 2015, 2016, 2017
  • Reviewer, Information Science, 2017
  • Reviewer, Information Retrieval Journal, 2016, 2017
  • Reviewer, Neurocomputing, 2016, 2017