Trustworthy User Modelling and Personalization (TUMP)

The TUMP Lab advances trustworthy user modeling and personalization through cutting-edge AI techniques, human-centric LLM-based user simulation, and rigorous benchmarking via open-source frameworks.

Research Focus:

  • Designing trustworthy recommendation algorithms—robust, diverse, fair, explainable, and privacy-preserving—by applying cutting-edge techniques e.g., deep learning and large language models across various domains including e-commerce, multimedia, location-based social networks, and healthcare.
  • Developing LLM-based user simulators for human-centric evaluation and optimization of recommender systems.
  • Benchmarking recommender systems through rigorous evaluation and fair comparison by advancing open-source libraries such as DaisyRec and DaisyRec-v2.0.

Latest News

[Feb 2026] Welcome Han Zhou to our team as a Visiting PhD student!
[Feb 2026] Our workshop proposal "Trustworthy and Adaptive LLMs for Mental and Physical Wellbeing in Recommendations" has been accepted by ACM UMPA 2026 (Core A)!
[Jan 2026] Welcome Sanat Gupta to our team as an intern!
[Jan 2026] Hongyang Liu won the Best Poster Presentation Award at Singapore ACM SIGKDD Symposium 2026. Congratulations!
[Jan 2026] Professor Sun will serve as a Session Chair for the DMKM: Recommender Systems 4 session for AAAI 2026.
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