Hefei Xu

According to our database, Hefei Xu authored at least 10 papers between 2023 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

VC-Soup: Value-Consistency Guided Multi-Value Alignment for Large Language Models.

Hefei Xu, Le Wu, Yu Wang, Min Hou, Han Wu, Zhen Zhang, Meng Wang

CoRR, March, 2026

MLLMRec-R1: Incentivizing Reasoning Capability in Large Language Models for Multimodal Sequential Recommendation.

Yu Wang, Yonghui Yang, Le Wu, Jiancan Wu, Hefei Xu, Hui Lin

CoRR, March, 2026

VC-Soup: Value-Consistency Guided Multi-Value Alignment for Large Language Models.

Hefei Xu, Le Wu, Yu Wang, Min Hou, Han Wu, Zhen Zhang, Meng Wang

Proceedings of the ACM Web Conference 2026, 2026

Mitigating Fine-tuning Bias: A Parameter-Efficient Debiasing Framework for Large Language Models.

Qiuyu Li, Kun Zhang, Le Wu, Hao Liu, Hefei Xu, Xin Li, Si Wei

Proceedings of the ACM Web Conference 2026, 2026

AlignCP: Noise-Aware Preference Alignment for LLMs via Confidence and Polarity Reweighting.

Chen Cheng, Hefei Xu, Le Wu

Proceedings of the ACM Web Conference 2026, 2026

Multi-Value Alignment for LLMs via Value Decorrelation and Extrapolation.

Hefei Xu, Le Wu, Chen Cheng, Hao Liu

Proceedings of the Fortieth AAAI Conference on Artificial Intelligence, 2026

2025

Fair Personalized Learner Modeling Without Sensitive Attributes.

Hefei Xu, Min Hou, Le Wu, Fei Liu, Yonghui Yang, Haoyue Bai, Richang Hong, Meng Wang

Proceedings of the ACM on Web Conference 2025, 2025

Mitigating Distribution Shifts in Sequential Recommendation: An Invariance Perspective.

Yuxin Liao, Yonghui Yang, Min Hou, Le Wu, Hefei Xu, Hao Liu

Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2025

2024

Local Overlapping Spatial-aware Community Detection.

Li Ni, Hefei Xu, Yiwen Zhang, Wenjian Luo, Yingying Huang, Victor S. Sheng

ACM Trans. Knowl. Discov. Data, April, 2024

2023

Spatial-Aware Local Community Detection Guided by Dominance Relation.

Li Ni, Hefei Xu, Yiwen Zhang, Wenjian Luo

IEEE Trans. Comput. Soc. Syst., April, 2023