publications

2026

1. ECIR

   Interplay: Training Independent Simulators for Reference-Free Conversational Recommendation

   Jerome Ramos, Feng Xia, Xi Wang, and 4 more authors

   Proceedings of the European Conference on Information Retrieval, 2026

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2. ECIR

   eRisk 2026: Tasks on Symptoms Ranking, Contextual and Conversational Approaches

   Anxo Perez, Javier Parapar, Xi Wang, and 1 more author

   Proceedings of the European Conference on Information Retrieval, 2026

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3. ICLR

   Attributing Response to Context: Jensen-Shannon Divergence Driven Mechanistic Study

   Ruizhe Li, Chen Chen, Yuchen Hu, and 3 more authors

   International Conference on Learning Representations, 2026

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2025

1. NAACL

   Adaptive Retrieval-Augmented Generation for Conversational Systems

   Xi Wang, Procheta Sen, Ruizhe Li, and 1 more author

   Proceedings of the Annual Conference of the North American Chapter of the Association for Computational Linguistics, 2025

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2. WWW

   SynDL: A Large-Scale Synthetic Test Collection for Passage Retrieval

   Hossein A Rahmani, Xi Wang, Emine Yilmaz, and 3 more authors

   Proceedings of the ACM Web Conference, 2025

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3. NAACL

   MADial-Bench: Towards Real-world Evaluation of Memory-Augmented Dialogue Generation

   Junqing He, Liang Zhu, Rui Wang, and 3 more authors

   Proceedings of the Annual Conference of the North American Chapter of the Association for Computational Linguistics, 2025

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4. CIKM

   ProActLLM: Proactive Conversational Information Seeking with Large Language Models

   Shubham Chatterjee, Xi Wang, Shuo Zhang, and 5 more authors

   Proceedings of the ACM International Conference on Information & Knowledge Management, 2025

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5. CIKM

   TalkDep: Clinically Grounded LLM Personas for Conversation-Centric Depression Screening

   Xi Wang, Anxo Perez, Javier Parapar, and 1 more author

   Proceedings of the ACM International Conference on Information & Knowledge Management, 2025

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6. CIKM

   +VeriRel: Verification Feedback to Enhance Document Retrieval for Scientific Fact Checking

   Xingyu Deng, Xi Wang, and Mark Stevenson

   Proceedings of the ACM International Conference on Information & Knowledge Management, 2025

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7. ICTIR

   The Next Phase of Scientific Fact-Checking: Advanced Evidence Retrieval from Complex Structured Academic Papers

   Xingyu Deng, Xi Wang, and Mark Stevenson

   Proceedings of the ACM SIGIR International Conference on the Theory of Information Retrieval, 2025

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8. ECIR

   eRisk 2025: Contextual and Conversational Approaches for Depression

   Javier Parapar, Anxo Perez, Xi Wang, and 1 more author

   Proceedings of the European Conference on Information Retrieval, 2025

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9. CLEF

   Overview of eRisk 2025: Early Risk Prediction on the Internet

   Javier Parapar, Anxo Perez, Xi Wang, and 1 more author

   Proceedings of the Conference and Labs of the Evaluation Forum, 2025
10. arXiv

    Progressive Depth Up-Scaling via Optimal Transport

    Mingzi Cao, Xi Wang, and Nikolaos Aletras

    arXiv preprint, 2025

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2024

1. ECIR

   Simulated Task Oriented Dialogues for Developing Versatile Conversational Agents

   Xi Wang, Procheta Sen, Ruizhe Li, and 1 more author

   European Conference on Information Retrieval, 2024

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2. ECIR

   Self Contrastive Learning for Session-Based Recommendation

   Zhengxiang Shi, Xi Wang, and Aldo Lipani

   European Conference on Information Retrieval, 2024

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3. EACL

   Clarifying the Path to User Satisfaction: An Investigation into Clarification Usefulness

   Hossein A Rahmani, Xi Wang, Mohammad Aliannejadi, and 2 more authors

   European Chapter of the Association for Computational Linguistics (Findings), 2024

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2023

1. AAAI

   Task2KB: A Public Task-Oriented Knowledge Base

   Xi Wang, Hossein A Rahmani, Procheta Sen, and 1 more author

   Proceedings of the AAAI Conference on Artificial Intelligence, 2023

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2. ACL

   A Survey on Asking Clarification Questions Datasets in Conversational Systems

   Hossein A Rahmani*, Xi Wang*, Yue Feng, and 3 more authors

   Proceedings of Annual Meeting of the Association for Computational Linguistics (main), 2023

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3. 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

   Proceedings of International Conference on Empirical Methods in Natural Language Processing (Findings), 2023

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4. 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

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2022

1. SIGIR

   Multi-modal Graph Contrastive Learning for Micro-video Recommendation

   Zixuan Yi, Xi Wang, Iadh Ounis, and 1 more author

   Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2022

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2021

1. WWW

   Leveraging Review Properties for Effective Recommendation

   Xi Wang, Iadh Ounis, and Craig Macdonald

   Proceedings of the Web Conference, 2021

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2020

1. CIKM

   Negative Confidence-Aware Weakly Supervised Binary Classification for Effective Review Helpfulness Classification

   Xi Wang, Iadh Ounis, and Craig Macdonald

   Proceedings of ACM International Conference on Information & Knowledge Management, 2020

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2. RecSys

   Beta-rec: Build, Evaluate and Tune Automated Recommender Systems

   Zaiqiao Meng, Richard McCreadie, Craig Macdonald, and 8 more authors

   Proceedings of the 14th ACM Conference on Recommender Systems, 2020

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2019

1. ECIR

   Comparison of Sentiment Analysis and User Ratings in Venue Recommendation

   Xi Wang, Iadh Ounis, and Craig Macdonald

   Proceedings of Advances in Information Retrieval: 41st European Conference on IR Research, 2019

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