💡 About Me

Hi! This is Jujia Zhao, a thrid year PhD candidate in the Leiden Institute of Advanced Computer Science (LIACS) from Leiden University, supervised by Zhaochun Ren and Suzan Verberne. My research focuses on agentic recommendation, unifying search and recommendation, LLM evaluation.

🔥 News

• 2026.08:  🎉🎉 Our paper ‘‘Unifying Search and Recommendation with Dual-View Representation Learning in a Generative Paradigm’’ is accepted by Transactions on Information Systems (TOIS 2026).
• 2026.04:  🎉🎉 Our paper ‘‘ReportLogic: Evaluating Logical Quality in Deep Research Reports’’ is accepted by The 64th Annual Meeting of the Association for Computational Linguistics (ACL 2026).
• 2026.04:  🎉🎉 Our paper ‘‘Unifying Search and Recommendation in LLMs via Gradient Multi-Subspace Tuning’’ is accepted by ACM SIGIR Conference on Research and Development in Information (SIGIR 2026).
• 2025.07:  🎉🎉 Our paper ‘‘Model Meets Knowledge: Analyzing Knowledge Types for Conversational Recommender Systems’’ is accepted by 19th ACM Conference on Recommender Systems (RecSys 2025).
• 2025.01:  🎉🎉 Our paper ‘‘LLM-based federated recommendation’’ is accepted by Annual Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics (NAACL 2025 Findings).

📝 Selected Publications

• ReportLogic: Evaluating Logical Quality in Deep Research Reports

  Jujia Zhao, Zhaoxin Huan, Zihan Wang, Xiaolu Zhang, Jun Zhou, Suzan Verberne, and Zhaochun Ren

  ACL 2026 | Paper | Code

• Unifying Search and Recommendation in LLMs via Gradient Multi-Subspace Tuning

  Jujia Zhao, Zihan Wang, Shuaiqun Pan, Suzan Verberne, and Zhaochun Ren

  SIGIR 2026 | Paper | Code

• Unifying Search and Recommendation with Dual-View Representation Learning in a Generative Paradigm

  Jujia Zhao, Wenjie Wang, Chen Xu, Xiuying Chen, Zhaochun Ren and Suzan Verberne

  TOIS 2026 | Paper | Code

• Model Meets Knowledge: Analyzing Knowledge Types for Conversational Recommender Systems

  Jujia Zhao, Yumeng Wang, Zhaochun Ren and Suzan Verberne

  RecSys 2025 | Paper | Code

• A Federated Framework for LLM-based Recommendation

  Jujia Zhao, Wenjie Wang, Chen Xu, See-Kiong Ng and Tat-Seng Chua

  NAACL 2025 findings | Paper | Code

• Denoising Diffusion Recommender Model

  Jujia Zhao, Wenjie Wang, Yiyan Xu, Teng Sun, Fuli Feng and Tat-Seng Chua

  SIGIR 2024 | Paper | Code

• Popularity-aware Distributionally Robust Optimization for Recommendation System

  Jujia Zhao, Wenjie Wang, Xinyu Lin, Leigang Qu, Jizhi Zhang and Tat-Seng Chua

  CIKM 2023 | Paper | Code

💻 Internships

• 2025.07 - 2025.12, Research Intern, Ant Group (Mentor: Zhaoxin Huan and Dr. Xiaolu Zhang), Hangzhou, China.
• 2022.08 - 2024.06, Research Intern, NExT++ Research Center (Supervisor: Prof. Wenjie Wang and Prof. Tat-Seng Chua), Singapore.

📖 Educations

2024.07 - Present

PhD Candidate

Leiden University, The Netherlands

2022.08 - 2024.06

Master of Science

National University of Singapore, Singapore

2018.08 - 2022.06

Bachelor of Automation

Beijing Institute of Technology, Beijing

🔭 Professional Services

• Invited Journal Reviewer for TOIS, TKDE, TIST
• Program Committee Member of KDD’24, SIGIR’25, SIGIR’26
• Area Chair of ACL ARR 2026