Zhaochun Ren's Homepage

News

Jan 2023
I serve as an associate editor of Information Processing & Management.

Nov 2022
Two papers about reducing hallucination in dialogue system and debiased natural language understanding were accepted by AAAI'23.

October 2022
One paper about user behavior leakage in recommender systems was accepted at TOIS.

One paper about conversational recommendation was accepted by WSDM'23.

May 2022
One paper about attacks against recommender systems was accepted by KDD'22.

April 2022
One resource paper about medical conversation was accepted by SIGIR'22 resource track.

March 2022
Three full papers about reinforcement learning for recommendation, opinion tag and conversational recommendation were accepted by SIGIR'22.

February 2022
One paper about open-ended text generation was accepted by ACL'22.

September 2021
One paper about legal judgment prediction was accepted by Information Processing & Management.

Zhaochun Ren（）

Professor
Information Retrieval Lab
School of Computer Science and Technology
Shandong University, China

Email: zhaochun.ren@sdu.edu.cn
408-1, N3 Building, 72th Binhai Road, Qingdao, China

I am currently a full professor at Shandong University, China. I’m leading a growing and productive information retrieval and natural language processing group. Prior to this, I worked as a senior research manager at JD.com and a research associate in University College London. 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 natural language processing. Before joining UvA, I received my B.E and M.E from Shandong University in 2009 and 2012 respectively, and worked as a short-term visiting scholar in Max-Planck-Institut für Informatik, 2012.

Research Interests

Information Retrieval:
Recommender systems
Conversational information seeking
Legal IR systems and applications

Natural Language Processing:
Dialogue systems
Summarization and tagging
Knowledge representation and distillation

Working Experience

Shandong University, China
Professor 2019 - now

Data Science Lab at JD.com, China
Research Scientist & Senior Research Manager, 2017 - 2019
Worked on e-commerce recommender systems, text mining, and dialogue systems.

Department of Computer Science, University College London, United Kingdom
Research Associate 2016 - 2017
Worked on an EPSRC project about early warning for infectious diseases.

Informatics Institute, University of Amsterdam, The Netherlands
PhD student 2012-2016
Worked on social media analysis.

Natural Language Processing Group, Columbia University, U.S.A
Visiting Scholar 2014
Director: Prof. Kathleen McKeown

D5, Max Planck Institute for Informatics, Germany
Visiting Scholar 2012
Director: Prof. Gerhard Weikum

Education

University of Amsterdam
PhD in ILPS 2012 - 2016, Amsterdam, the Netherlands
Supervisor: Prof. Dr. Maarten de Rijke

Shandong University
M.E. in Computer Science and Technology 2009 - 2012, Qingdao, China
Supervisor: Prof. Jun Ma

Shandong University
B.E. in Computer Science and Technology 2005 - 2009, Qingdao, China

Selected Publications

(Full list see my [Google Scholar ])

* Corresponding author

pdf	Contrastive Learning Reduces Hallucination in Conversations. Weiwei Sun, Zhengliang Shi, Shen Gao, Pengjie Ren, Maarten de Rijke, Zhaochun Ren* . AAAI 2023 (CORE rank A*)

pdf	Variational Reasoning about User Preferences for Conversational Recommendation. *Zhaochun Ren (co-first author)*, Zhi Tian, Dongdong Li, Pengjie Ren, Xin Xin, Huasheng Liang, Maarten de Rijke, Zhumin Chen. SIGIR 2022 (CORE rank A)

pdf	Debiasing Learning for Membership Inference Attacks Against Recommender Systems. Zihan Wang, Na Huang, Fei Sun, Pengjie Ren, Zhumin Chen, Hengliang Luo, Maarten de Rijke, Zhaochun Ren. KDD 2022 (CORE rank A)

pdf	Knowledge bridging for empathetic dialogue generation. Qintong Li, Piji Li, Zhaochun Ren, Pengjie Ren, Zhumin Chen. AAAI 2022 (CORE rank A*)

pdf	Membership Inference Attacks Against Recommender Systems. *Zhaochun Ren (co-first author)*, Minxing Zhang, Zihan Wang, Pengjie Ren, Zhumin Chen, Pengfei Hu, and Yang Zhang. CCS 2021 (CORE rank A)

pdf	Semi-Supervised Variational Reasoning for Medical Dialogue Generation. *Zhaochun Ren (co-first author)*, Dongdong Li, Pengjie Ren, Zhumin Chen, Miao Fan, Jun Ma, Maarten de Rijke. SIGIR 2021 (CORE rank A)

pdf	EmpDG: Multi-resolution Interactive Empathetic Dialogue Generation. Qintong Li, Hongshen Chen, Zhaochun Ren*, Zhumin Chen, Zhaopeng Tu, Jun Ma. COLING 2020 (CORE rank A)

pdf	Keywords Generation Improves E-Commerce Session-based Recommendation. Yuanxing Liu, Zhaochun Ren*, Wanxiang Che, Ting Liu and Dawei Yin. In The Web Conference 2020

pdf	Streaming graph neural networks. Yao Ma, Ziyi Guo, Zhaocun Ren, Jiliang Tang, Dawei Yin. SIGIR 2020 (CORE rank A*)

pdf	Robust Embedding with Multi-Level Structures for Link Prediction. Zihan Wang, Zhaochun Ren, Chunyu He, Peng Zhang, Yue Hu. IJCAI 2019 (CORE rank A*)

pdf	Taxonomy-aware Multi-hop Reasoning Networks for Sequential Recommendation. Jin Huang, Zhaochun Ren, Wayne Xin Zhao, Gaole He, Ji-Rong Wen and Daxiang Dong. WSDM 2019 (CORE rank A*)

pdf	Explicit State Tracking with Semi-Supervision for Neural Dialogue Generation. Xisen Jin, Wenqiang Lei, Zhaochun Ren, Hongshen Chen, Shangsong Liang, Yihong Eric Zhao, Dawei Yin. CIKM 2018 (CORE rank A)

pdf	Sequicity: Simplifying Task-oriented Dialogue Systems with Single Sequence-to-Sequence Architectures. Wenqiang Lei, Xisen Jin, Zhaochun Ren, Xiangnan He, Min-Yen Kan, Dawei Yin. ACL 2018 (CORE rank A*)

pdf	Knowledge Diffusion for Neural Dialogue Generation. Shuman Liu, Hongshen Chen, Zhaochun Ren, Yang Feng, Dawei Yin. ACL 2018 (CORE rank A*)

pdf	Hierarchical Variational Memory Network for Dialogue Generation. *Zhaochun Ren (co-first author)*, Hongshen Chen, Jiliang Tang, Yihong Eric Zhao, Dawei Yin. WWW 2018 (CORE rank A)

pdf	Multi-dimensional network embedding with hierarchical structures. *Zhaochun Ren (co-first author)*, Yao Ma, Ziheng Jiang, Jiliang Tang, Dawei Yin. WSDM 2018 (CORE rank A)

pdf	A Path-constrained Framework for Discriminating Substitutable and Complementary Products in E-commerce. Zihan Wang, Ziheng Jiang, Zhaochun Ren, Jiliang Tang, Dawei Yin. WSDM 2018 (CORE rank A) (Best Student Paper Award)*

pdf	Neural Attentive Session-based Recommendation. Jing Li, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Jun Ma. CIKM 2017 (CORE rank A) (Best Full Paper Runner Up Award)

pdf	Summarizing Answers in Non-Factoid Community Question-Answering *Zhaochun Ren(co-first author)*, Hongya Song, Shangsong Liang, Piji Li, Jun Ma, Maarten de Rijke. WSDM 2017 (CORE rank A)

pdf	Social Collaborative Viewpoint Regression with Explainable Recommendations. Zhaochun Ren, Shangsong Liang, Piji Li, Shuaiqiang Wang, Maarten de Rijke. WSDM 2017 (CORE rank A*)

pdf	Time-aware Multi-Viewpoint Summarization of Multilingual Social Text Streams. Zhaochun Ren, Oana Inel, Lora Aroyo, Maarten de Rijke. CIKM 2016 (CORE rank A)

pdf	Explainable User Clustering in Short Text Streams. *Zhaochun Ren(co-first author)*, Yukun Zhao, Shangsong Liang, Jun Ma, Emine Yilmaz, Maarten de Rijke. SIGIR 2016 (CORE rank A)

pdf	Summarizing Contrastive Themes via Hierarchical Non-Parametric Processes. Zhaochun Ren, Maarten de Rijke. SIGIR 2015 (CORE rank A*)

pdf	Hierarchical Multi-Label Classification of Social Text Streams. Zhaochun Ren, Maria-Hendrike Peetz, Shangsong Liang, Willemijn van Dolen, Maarten de Rijke. SIGIR 2014 (CORE rank A*)

pdf	Personalized Time-aware Tweets Summarization. Zhaochun Ren, Shangsong Liang, Edgar Meij, Maarten de Rijke. SIGIR 2013 (CORE rank A*)

pdf	Summarizing web forum threads based on a latent topic propagation process. Zhaochun Ren, Jun Ma, Shuaiqiang Wang, Yang Liu. CIKM 2011 (CORE rank A)