2024 ECIR Simulated Task Oriented Dialogues for Developing Versatile Conversational Agents Xi Wang, Procheta Sen, Ruizhe Li, and 1 more author In European Conference on Information Retrieval, 2024 HTML PDF ECIR Self contrastive learning for session-based recommendation Zhengxiang Shi, Xi Wang, and Aldo Lipani In European Conference on Information Retrieval, 2024 HTML PDF EACL Clarifying the Path to User Satisfaction: An Investigation into Clarification Usefulness Hossein A Rahmani, Xi Wang, Mohammad Aliannejadi, and 2 more authors In European Chapter of the Association for Computational Linguistics (Findings), 2024 HTML PDF 2023 IP&M A Social-aware Gaussian Pre-trained Model for Effective Cold-start Recommendation Siwei Liu, Xi Wang, Craig Macdonald, and 1 more author Information Processing & Management, 2023 HTML PDF EMNLP Improving Conversational Recommendation Systems via Bias Analysis and Language-Model-Enhanced Data Augmentation Xi Wang, Hossein A Rahmani, Jiqun Liu, and 1 more author In Proceedings of International Conference on Empirical Methods in Natural Language Processing (Findings), 2023 HTML PDF ACL A Survey on Asking Clarification Questions Datasets in Conversational Systems Hossein A Rahmani*, Xi Wang*, Yue Feng, and 3 more authors In Proceedings of Annual Meeting of the Association for Computational Linguistics (main), 2023 HTML PDF 2022 SIGIR Multi-modal graph contrastive learning for micro-video recommendation Zixuan Yi, Xi Wang, Iadh Ounis, and 1 more author In Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2022 HTML PDF 2021 WebConf Leveraging review properties for effective recommendation Xi Wang, Iadh Ounis, and Craig Macdonald In Proceedings of the Web Conference, 2021 HTML PDF 2020 RecSys Beta-rec: Build, evaluate and tune automated recommender systems Zaiqiao Meng, Richard McCreadie, Craig Macdonald, and 8 more authors In Proceedings of the 14th ACM Conference on Recommender Systems, 2020 HTML PDF CIKM Negative confidence-aware weakly supervised binary classification for effective review helpfulness classification Xi Wang, Iadh Ounis, and Craig Macdonald In Proceedings of ACM International Conference on Information & Knowledge Management, 2020 HTML PDF 2019 ECIR Comparison of sentiment analysis and user ratings in venue recommendation Xi Wang, Iadh Ounis, and Craig Macdonald In Proceedings of Advances in Information Retrieval: 41st European Conference on IR Research, 2019 HTML PDF