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Membership Inference Attacks Against Recommender Systems


Sep 16, 2021
Minxing Zhang, Zhaochun Ren, Zihan Wang, Pengjie Ren, Zhumin Chen, Pengfei Hu, Yang Zhang


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M^2-MedDialog: A Dataset and Benchmarks for Multi-domain Multi-service Medical Dialogues


Sep 08, 2021
Guojun Yan, Jiahuan Pei, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Huasheng Liang


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Learning to Ask Conversational Questions by Optimizing Levenshtein Distance


Jun 30, 2021
Zhongkun Liu, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Maarten de Rijke, Ming Zhou

* 13 pages, 4 figures, Published in ACL 2021 

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Few-Shot Electronic Health Record Coding through Graph Contrastive Learning


Jun 29, 2021
Shanshan Wang, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Huasheng Liang, Qiang Yan, Evangelos Kanoulas, Maarten de Rijke


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Improving Transformer-based Sequential Recommenders through Preference Editing


Jun 23, 2021
Muyang Ma, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Huasheng Liang, Jun Ma, Maarten de Rijke

* 22 pages, 2 figures 

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Wizard of Search Engine: Access to Information Through Conversations with Search Engines


May 18, 2021
Pengjie Ren, Zhongkun Liu, Xiaomeng Song, Hongtao Tian, Zhumin Chen, Zhaochun Ren, Maarten de Rijke

* Published in SIGIR 2021 

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Cross-Domain Contract Element Extraction with a Bi-directional Feedback Clause-Element Relation Network


May 13, 2021
Zihan Wang, Hongye Song, Zhaochun Ren, Pengjie Ren, Zhumin Chen, Xiaozhong Liu, Hongsong Li, Maarten de Rijke

* Accepted by SIGIR2021 

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Semi-Supervised Variational Reasoning for Medical Dialogue Generation


May 13, 2021
Dongdong Li, Zhaochun Ren, Pengjie Ren, Zhumin Chen, Miao Fan, Jun Ma, Maarten de Rijke

* Accepted by Sigir2021 

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Simulating User Satisfaction for the Evaluation of Task-oriented Dialogue Systems


May 08, 2021
Weiwei Sun, Shuo Zhang, Krisztian Balog, Zhaochun Ren, Pengjie Ren, Zhumin Chen, Maarten de Rijke

* Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR '21), 2021 

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A Cooperative Memory Network for Personalized Task-oriented Dialogue Systems with Incomplete User Profiles


Feb 16, 2021
Jiahuan Pei, Pengjie Ren, Maarten de Rijke

* In Proceedings of the Web Conference 2021 (WWW '21), April 19-23, 2021, Ljubljana, Slovenia. ACM, New York, NY, USA, 10 pages 

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Detecting and Classifying Malevolent Dialogue Responses: Taxonomy, Data and Methodology


Aug 21, 2020
Yangjun Zhang, Pengjie Ren, Maarten de Rijke

* under review at JASIST 

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Diversifying Task-oriented Dialogue Response Generation with Prototype Guided Paraphrasing


Aug 07, 2020
Phillip Lippe, Pengjie Ren, Hinda Haned, Bart Voorn, Maarten de Rijke

* under review at TASLP 

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Query Resolution for Conversational Search with Limited Supervision


May 24, 2020
Nikos Voskarides, Dan Li, Pengjie Ren, Evangelos Kanoulas, Maarten de Rijke

* SIGIR 2020 full conference paper 

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Conversations with Search Engines


Apr 29, 2020
Pengjie Ren, Zhumin Chen, Zhaochun Ren, Evangelos Kanoulas, Christof Monz, Maarten de Rijke

* under review at TOIS 

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A Neural Topical Expansion Framework for Unstructured Persona-oriented Dialogue Generation


Feb 06, 2020
Minghong Xu, Piji Li, Haoran Yang, Pengjie Ren, Zhaochun Ren, Zhumin Chen, Jun Ma

* Accepted by ECAI 2020 

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Retrospective and Prospective Mixture-of-Generators for Task-oriented Dialogue Response Generation


Nov 19, 2019
Jiahuan Pei, Pengjie Ren, Christof Monz, Maarten de Rijke


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From Personalization to Privatization: Meta Matrix Factorization for Private Rating Predictions


Oct 22, 2019
Yujie Lin, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Dongxiao Yu, Jun Ma, Maarten de Rijke, Xiuzhen Cheng


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Thinking Globally, Acting Locally: Distantly Supervised Global-to-Local Knowledge Selection for Background Based Conversation


Aug 26, 2019
Pengjie Ren, Zhumin Chen, Christof Monz, Jun Ma, Maarten de Rijke

* 9 pages, 4 figures 

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Improving Outfit Recommendation with Co-supervision of Fashion Generation


Aug 24, 2019
Yujie Lin, Pengjie Ren, Zhumin Chen, Zhaochun Ren, Jun Ma, Maarten de Rijke


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RefNet: A Reference-aware Network for Background Based Conversation


Aug 18, 2019
Chuan Meng, Pengjie Ren, Zhumin Chen, Christof Monz, Jun Ma, Maarten de Rijke

* 10 pages, 2 figures 

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A Modular Task-oriented Dialogue System Using a Neural Mixture-of-Experts


Jul 10, 2019
Jiahuan Pei, Pengjie Ren, Maarten de Rijke

* Proceedings of the 2019 SIGIR Workshop WCIS: Workshop on Conversational Interaction Systems 

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Improving Background Based Conversation with Context-aware Knowledge Pre-selection


Jun 16, 2019
Yangjun Zhang, Pengjie Ren, Maarten de Rijke

* SCAI 2019 workshop paper 

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Improving Neural Response Diversity with Frequency-Aware Cross-Entropy Loss


Feb 25, 2019
Shaojie Jiang, Pengjie Ren, Christof Monz, Maarten de Rijke

* Will appear at The Web Conference 2019 

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Entity Linking for Queries by Searching Wikipedia Sentences


May 18, 2017
Chuanqi Tan, Furu Wei, Pengjie Ren, Weifeng Lv, Ming Zhou


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