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Cheng Wei

4 papers hereh-index 211 citations6 works total

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

author position
  • first author1
  • middle author2
  • last author1

Across the 4 of 4 papers where every author was matched, so the position is known.

fields
  • cs.LG2
  • cs.AI1
  • cs.CL1
same name
  • Cheng Wei — 2 papers, h 5
  • Cheng Wei — 1 paper, h 1

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

collaborators

4 papers

cs.AI2026

InfoDensity: Rewarding Information-Dense Traces for Efficient Reasoning

Chengwei Wei, Jung-jae Kim, Longyin Zhang +2

Large Language Models (LLMs) with extended reasoning capabilities often generate verbose and redundant reasoning traces, incurring unnecessary computational cost. While existing re…

cs.LG2026

How Off-Policy Can GRPO Be? Mu-GRPO for Efficient LLM Reinforcement Learning

Minghao Tian, Yunfei Xie, Chen Wei

Group Relative Policy Optimization (GRPO) has been a key driver of recent progress in reinforcement learning with verifiable rewards (RLVR) for large language models, but it is typ…

cs.CL2025

Self-Rewarding Rubric-Based Reinforcement Learning for Open-Ended Reasoning

Zhiling Ye, Yun Yue, Haowen Wang +11

Open-ended evaluation is essential for deploying large language models in real-world settings. In studying HealthBench, we observe that using the model itself as a grader and gener…

cs.LG2025

Learning to Align, Aligning to Learn: A Unified Approach for Self-Optimized Alignment

Haowen Wang, Yun Yue, Zhiling Ye +12

Alignment methodologies have emerged as a critical pathway for enhancing language model alignment capabilities. While SFT (supervised fine-tuning) accelerates convergence through d…

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