Weixin Chen

Email: [email protected]

Since September 2025, I have been a Visiting Ph.D. Student at Rutgers University, working with Prof. Yongfeng Zhang. I am pursuing my Ph.D. at Hong Kong Baptist University under the supervision of Prof. Li Chen. Before that, I earned my B.Eng. degree from Shenzhen University in 2020, advised by Prof. Weike Pan.

My current research focuses on agentic and trustworthy recommender systems.

Weixin Chen

Recent News

[2026.01]
Two papers accepted by HCRS@WWW 2026 as oral presentations, including one first-author work.
[2026.01]
New preprint on collaborative memory-augmented agentic recommender systems is available on arXiv.
[2026.01]
One paper is accepted by WWW 2026 as co-first author. Congrats to Yuhan!
[2025.09]
Attend RecSys 2025 and present our research work @ Prague. Check our presentation: [Paper] and [Video].
[2025.09]
Happy to join in Rutgers WISE Lab as a visiting student researcher!
[2025.07]
One paper is accepted by RecSys 2025.
[2025.06]
One paper is accepted by TOIS 2025.
[2025.03]
One paper is accepted by TORS 2025.
[2022.09]
Present our research work @ RecSys 2022 remotely. Check our presentation: [Paper] and [Video].
[2022.09]
Start my PhD journey @ HKBU COMP.
[2022.06]
One paper is accepted by RecSys 2022.

Publications

(* indicates equal contributions)

All topics
Total citations: --
MemRec Model
2026
2026
MemRec: Collaborative Memory-Augmented Agentic Recommender System
Memory Agent
W. Chen, Y. Zhao, J. Huang, Z. Ye, C. M. Ju, T. Zhao, N. Shah, L. Chen, Y. Zhang.
arXiv preprint arXiv:2601.08816, 2026
@article{chen2026memrec,
  title   = {MemRec: Collaborative Memory-Augmented Agentic Recommender System},
  author  = {Chen, Weixin and Zhao, Yuhan and Huang, Jingyuan and Ye, Zihe and Ju, Clark Mingxuan and Zhao, Tong and Shah, Neil and Chen, Li and Zhang, Yongfeng},
  year    = 2026,
  journal = {arXiv preprint arXiv:2601.08816},
  url     = {https://arxiv.org/abs/2601.08816}
}
CDFA Model
2026
2026
The Double-Edged Sword of Knowledge Transfer: Diagnosing and Curing Fairness Pathologies in Cross-Domain Recommendation
Fairness Cross-domain
Y. Zhao*, W. Chen*, L. Chen, W. Pan.
The Web Conference (WWW 2026), Dubai (to appear)
@inproceedings{zhao2026double,
  title     = {The Double-Edged Sword of Knowledge Transfer: Diagnosing and Curing Fairness Pathologies in Cross-Domain Recommendation},
  author    = {Zhao, Yuhan and Chen, Weixin and Chen, Li and Pan, Weike},
  year      = 2026,
  booktitle = {Proceedings of the ACM Web Conference 2026 (WWW '26)}
}
PTFC Model
2026
2026
Post-Training Fairness Control: A Single-Train Framework for Dynamic Fairness in Recommendation
Fairness
Oral
W. Chen, L. Chen, Y. Zhao.
The 2nd Workshop on Human-Centered Recommender Systems @WWW 2026, Dubai
@inproceedings{chen2026posttraining,
  title     = {Post-Training Fairness Control: A Single-Train Framework for Dynamic Fairness in Recommendation},
  author    = {Chen, Weixin and Chen, Li and Zhao, Yuhan},
  year      = 2026,
  booktitle = {The 2nd Workshop on Human-Centered Recommender Systems at the ACM Web Conference 2026 (HCRS@WWW'26)}
}
FAS Model
2026
2026
From Aggregation to Selection: User-Validated Distributed Social Recommendation
Agent
Oral
J. Huang, D. Luo, Z. Ye, W. Chen, M. Guo, Y. Zhang.
The 2nd Workshop on Human-Centered Recommender Systems @WWW 2026, Dubai
@inproceedings{huang2026aggregation,
  title     = {From Aggregation to Selection: User-Validated Distributed Social Recommendation},
  author    = {Huang, Jingyuan and Luo, Dan and Ye, Zihe and Chen, Weixin and Guo, Minghao and Zhang, Yongfeng},
  year      = 2026,
  booktitle = {The 2nd Workshop on Human-Centered Recommender Systems at the ACM Web Conference 2026 (HCRS@WWW '26)}
}
H-Mem Model
2026
2026
H-Mem: Hybrid Multi-Dimensional Memory Management for Long-Context Conversational Agents
Memory Agent
Z. Ye, J. Huang, W. Chen, Y. Zhang.
The 19th Conference of the European Chapter of the ACL (EACL 2026) (to appear)
@inproceedings{ye2026hmem,
  title     = {H-Mem: Hybrid Multi-Dimensional Memory Management for Long-Context Conversational Agents},
  author    = {Ye, Zihe and Huang, Jingyuan and Chen, Weixin and Zhang, Yongfeng},
  year      = 2026,
  booktitle = {Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (EACL'26)}
}
VUG Model
2025
2025
Leave No One Behind: Fairness-Aware Cross-Domain Recommender Systems for Non-Overlapping Users
Fairness Cross-domain
Spotlight Oral
W. Chen*, Y. Zhao*, L. Chen, W. Pan.
ACM Conference on Recommender Systems (RecSys 2025), Prague
@inproceedings{chen2025leave,
  title     = {Leave No One Behind: Fairness-Aware Cross-Domain Recommender Systems for Non-Overlapping Users},
  author    = {Chen, Weixin and Zhao, Yuhan and Chen, Li and Pan, Weike},
  year      = 2025,
  booktitle = {Proceedings of the 19th ACM Conference on Recommender Systems (RecSys'25)},
  pages     = {226--236}
}
FMMRec Model
2025
2025
Causality-Inspired Fair Representation Learning for Multimodal Recommendation
Fairness Multimodal
W. Chen, L. Chen, Y. Ni, Y. Zhao.
ACM Transactions on Information Systems (TOIS), 2025
@article{chen2025causality,
  title     = {Causality-Inspired Fair Representation Learning for Multimodal Recommendation},
  author    = {Chen, Weixin and Chen, Li and Ni, Yongxin and Zhao, Yuhan},
  year      = 2025,
  journal   = {ACM Transactions on Information Systems},
  volume    = {43},
  number    = {6},
  articleno = {153},
  numpages  = {29}
}
OtPr Fairness Model
2025
2025
Investigating User-Side Fairness in Outcome and Process for Multi-Type Sensitive Attributes in Recommendations
Fairness
W. Chen, Y. Zhao, L. Chen.
ACM Transactions on Recommender Systems (TORS), 2025
@article{chen2025investigating,
  title     = {Investigating User-side fairness in outcome and process for multi-type sensitive attributes in recommendations},
  author    = {Chen, Weixin and Chen, Li and Zhao, Yuhan},
  year      = 2025,
  journal   = {ACM Transactions on Recommender Systems},
  volume    = {4},
  number    = {2},
  articleno = {25},
  numpages  = {29}
}
GPG4HSR Model
2022
2022
Global and Personalized Graphs for Heterogeneous Sequential Recommendation by Learning Behavior Transitions and User Intentions
Sequential
Oral
W. Chen, M. He, Y. Ni, W. Pan, Z. Ming, L. Chen.
ACM Conference on Recommender Systems (RecSys 2022), Seattle
@inproceedings{chen2022global,
  title     = {Global and personalized graphs for heterogeneous sequential recommendation by learning behavior transitions and user intentions},
  author    = {Chen, Weixin and He, Mingkai and Ni, Yongxin and Pan, Weike and Chen, Li and Ming, Zhong},
  year      = 2022,
  booktitle = {Proceedings of the 16th ACM Conference on Recommender Systems (RecSys'22)},
  pages     = {268--277}
}
MRL Model
2024
2024
Matryoshka Representation Learning for Recommendation
Sequential
R. Lai, L. Chen, W. Chen, R. Chen.
arXiv preprint arXiv:2406.07432, 2024
@article{lai2024matryoshka,
  title   = {Matryoshka Representation Learning for Recommendation},
  author  = {Lai, Riwei and Chen, Li and Chen, Weixin and Chen, Rui},
  year    = 2024,
  journal = {arXiv preprint arXiv:2406.07432},
  url     = {https://arxiv.org/abs/2406.07432}
}

Research Experience

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