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Hefei Xu

2 papers hereh-index 428 citations8 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author1
  • middle author1

Across the 2 of 2 papers where every author was matched, so the position is known.

fields
  • cs.IR1
  • cs.LG1

identity via Semantic Scholar / OpenAlex

collaborators

2 papers

cs.IR2026

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

Yu Wang, Yonghui Yang, Le Wu +3

Group relative policy optimization (GRPO) has become a standard post-training paradigm for improving reasoning and preference alignment in large language models (LLMs), and has rec…

cs.LG2025

Multi-Value Alignment for LLMs via Value Decorrelation and Extrapolation

Hefei Xu, Le Wu, Chen Cheng +1

With the rapid advancement of large language models (LLMs), aligning them with human values for safety and ethics has become a critical challenge. This problem is especially challe…

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