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Haihua Yang

3 accepted papers

2026

GTPO and GRPO-S: Token and Sequence-Level Reward Shaping with Policy Entropy

ICML 2026poster

Reinforcement Learning (RL) is pivotal for enhancing Large Language Model (LLM) reasoning, yet mainstream algorithms such as GRPO and DAPO remain constrained by a coarse-grained credit assignment paradigm, where all tokens within the same response receive the identical reward. In this paper, we prop…

Cited by 0SourceScholar
2026

Group-wise Data Ordering: Enhancing Instruction Tuning of Large Language Models via Embedding Proximity

ICML 2026poster

Instruction tuning (IT) is a central mechanism for aligning large language models (LLMs) with user intent. In practice, randomly shuffling the training set is a simple yet surprisingly strong baseline. However, it overlooks latent structure, such as domain and reasoning depth, and thus interleaves h…

Cited by 0SourceScholar