2023

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Variational Reasoning over Incomplete Knowledge Graphs for Conversational Recommendation
Xiaoyu Zhang | Xin Xin | Dongdong Li | Wenxuan Liu | Pengjie Ren | Zhumin Chen | Jun Ma | Zhaochun Ren
Proceedings of the Sixteenth ACM International Conference on Web Search and Data Mining, WSDM 2023, Singapore, 27 February 2023 - 3 March 2023

2022

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Multi-interest Diversification for End-to-end Sequential Recommendation
Wanyu Chen | Pengjie Ren | Fei Cai | Fei Sun | Maarten de Rijke
2022 Volume 40 Issue 1

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Improving legal judgment prediction through reinforced criminal element extraction
Yougang Lyu | Zihan Wang | Zhaochun Ren | Pengjie Ren | Zhumin Chen | Xiaozhong Liu | Yujun Li | Hongsong Li | Hongye Song
2022 Volume 59 Issue 1

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ReMeDi: Resources for Multi-domain, Multi-service, Medical Dialogues
Guojun Yan | Jiahuan Pei | Pengjie Ren | Zhaochun Ren | Xin Xin | Huasheng Liang | Maarten de Rijke | Zhumin Chen
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Improving Conversational Recommender Systems via Transformer-based Sequential Modelling
Jie Zou | Evangelos Kanoulas | Pengjie Ren | Zhaochun Ren | Aixin Sun | Cheng Long
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Rethinking Reinforcement Learning for Recommendation: A Prompt Perspective
Xin Xin | Tiago Pimentel | Alexandros Karatzoglou | Pengjie Ren | Konstantina Christakopoulou | Zhaochun Ren
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Personalized Abstractive Opinion Tagging
Mengxue Zhao | Yang Yang | Miao Li | Jingang Wang | Wei Wu | Pengjie Ren | Maarten de Rijke | Zhaochun Ren
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Variational Reasoning about User Preferences for Conversational Recommendation
Zhaochun Ren | Zhi Tian | Dongdong Li | Pengjie Ren | Liu Yang | Xin Xin | Huasheng Liang | Maarten de Rijke | Zhumin Chen
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

2021

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Conversations with Search Engines: SERP-based Conversational Response Generation
Pengjie Ren | Zhumin Chen | Zhaochun Ren | Evangelos Kanoulas | Christof Monz | Maarten de Rijke
2021 Volume 39 Issue 4

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A taxonomy, data set, and benchmark for detecting and classifying malevolent dialogue responses
Yangjun Zhang | Pengjie Ren | Maarten de Rijke
2021 Volume 72 Issue 12

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Simulating User Satisfaction for the Evaluation of Task-oriented Dialogue Systems
Weiwei Sun | Shuo Zhang | Krisztian Balog | Zhaochun Ren | Pengjie Ren | Zhumin Chen | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Conversations Powered by Cross-Lingual Knowledge
Weiwei Sun | Chuan Meng | Qi Meng | Zhaochun Ren | Pengjie Ren | Zhumin Chen | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Cross-Domain Contract Element Extraction with a Bi-directional Feedback Clause-Element Relation Network
Zihan Wang | Hongye Song | Zhaochun Ren | Pengjie Ren | Zhumin Chen | Xiaozhong Liu | Hongsong Li | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

doi dblp
Semi-Supervised Variational Reasoning for Medical Dialogue Generation
Dongdong Li | Zhaochun Ren | Pengjie Ren | Zhumin Chen | Miao Fan | Jun Ma | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Wizard of Search Engine: Access to Information Through Conversations with Search Engines
Pengjie Ren | Zhongkun Liu | Xiaomeng Song | Hongtao Tian | Zhumin Chen | Zhaochun Ren | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Initiative-Aware Self-Supervised Learning for Knowledge-Grounded Conversations
Chuan Meng | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Tengxiao Xi | Maarten de Rijke
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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A Cooperative Memory Network for Personalized Task-oriented Dialogue Systems with Incomplete User Profiles
Jiahuan Pei | Pengjie Ren | Maarten de Rijke
WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021

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Long Short-Term Session Search: Joint Personalized Reranking and Next Query Prediction
Qiannan Cheng | Zhaochun Ren | Yujie Lin | Pengjie Ren | Zhumin Chen | Xiangyuan Liu | Maarten de Rijke
WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021

2020

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Report on the international workshop on natural language processing for recommendations (NLP4REC 2020) workshop held at WSDM 2020
Xiao Huang | Pengjie Ren | Zhaochun Ren | Fei Sun | Xiangnan He | Dawei Yin | Maarten de Rijke
2020 Volume 54 Issue 1

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NLP4REC: The WSDM 2020 Workshop on Natural Language Processing for Recommendations
Pengjie Ren | Zhaochun Ren | Fei Sun | Xiangnan He | Dawei Yin | Maarten de Rijke
WSDM '20: The Thirteenth ACM International Conference on Web Search and Data Mining, Houston, TX, USA, February 3-7, 2020

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AIIS: The SIGIR 2020 Workshop on Applied Interactive Information Systems
Hongshen Chen | Zhaochun Ren | Pengjie Ren | Dawei Yin | Xiaodong He
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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DukeNet: A Dual Knowledge Interaction Network for Knowledge-Grounded Conversation
Chuan Meng | Pengjie Ren | Zhumin Chen | Weiwei Sun | Zhaochun Ren | Zhaopeng Tu | Maarten de Rijke
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

doi dblp
Meta Matrix Factorization for Federated Rating Predictions
Yujie Lin | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Dongxiao Yu | Jun Ma | Maarten de Rijke | Xiuzhen Cheng
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

doi dblp
Query Resolution for Conversational Search with Limited Supervision
Nikos Voskarides | Dan Li | Pengjie Ren | Evangelos Kanoulas | Maarten de Rijke
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Coding Electronic Health Records with Adversarial Reinforcement Path Generation
Shanshan Wang | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Jian-Yun Nie | Jun Ma | Maarten de Rijke
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Improving End-to-End Sequential Recommendations with Intent-aware Diversification
Wanyu Chen | Pengjie Ren | Fei Cai | Fei Sun | Maarten de Rijke
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020

2019

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ILPS at TREC 2019 Conversational Assistant Track
Nikos Voskarides | Dan Li | Andreas Panteli | Pengjie Ren
Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019

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π-Net: A Parallel Information-sharing Network for Shared-account Cross-domain Sequential Recommendations
Muyang Ma | Pengjie Ren | Yujie Lin | Zhumin Chen | Jun Ma | Maarten de Rijke
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019

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Bayesian Personalized Feature Interaction Selection for Factorization Machines
Yifan Chen | Pengjie Ren | Yang Wang | Maarten de Rijke
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019

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A Collaborative Session-based Recommendation Approach with Parallel Memory Modules
Meirui Wang | Pengjie Ren | Lei Mei | Zhumin Chen | Jun Ma | Maarten de Rijke
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019

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Order-free Medicine Combination Prediction with Graph Convolutional Reinforcement Learning
Shanshan Wang | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Jun Ma | Maarten de Rijke
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019

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Improving Neural Response Diversity with Frequency-Aware Cross-Entropy Loss
Shaojie Jiang | Pengjie Ren | Christof Monz | Maarten de Rijke
The World Wide Web Conference, WWW 2019, San Francisco, CA, USA, May 13-17, 2019

doi dblp
Improving Outfit Recommendation with Co-supervision of Fashion Generation
Yujie Lin | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Jun Ma | Maarten de Rijke
The World Wide Web Conference, WWW 2019, San Francisco, CA, USA, May 13-17, 2019

2018

doi dblp
Sentence Relations for Extractive Summarization with Deep Neural Networks
Pengjie Ren | Zhumin Chen | Zhaochun Ren | Furu Wei | Liqiang Nie | Jun Ma | Maarten de Rijke
2018 Volume 36 Issue 4

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An Attentive Interaction Network for Context-aware Recommendations
Lei Mei | Pengjie Ren | Zhumin Chen | Liqiang Nie | Jun Ma | Jian-Yun Nie
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

2017

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Detecting temporal patterns of user queries
Pengjie Ren | Zhumin Chen | Jun Ma | Zhiwei Zhang | Luo Si | Shuaiqiang Wang
2017 Volume 68 Issue 1

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Leveraging Contextual Sentence Relations for Extractive Summarization Using a Neural Attention Model
Pengjie Ren | Zhumin Chen | Zhaochun Ren | Furu Wei | Jun Ma | Maarten de Rijke
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

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Neural Attentive Session-based Recommendation
Jing Li | Pengjie Ren | Zhumin Chen | Zhaochun Ren | Tao Lian | Jun Ma
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017

2016

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Supervised Local Contexts Aggregation for Effective Session Search
Zhiwei Zhang | Jingang Wang | Tao Wu | Pengjie Ren | Zhumin Chen | Luo Si
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings

2015

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Mining and ranking users' intents behind queries
Pengjie Ren | Zhumin Chen | Jun Ma | Shuaiqiang Wang | Zhiwei Zhang | Zhaochun Ren
2015 Volume 18 Issue 6