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Yongliang Miao

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#machine learning Preprint Sep 2026

Look Before You Select: Rethinking Vocabulary Sparsification in On-Policy Distillation

On-policy distillation (OPD) uses teacher correction on student-generated responses. Full-vocabulary correction can provide important corrections even for tokens that the student assigns low probability, but backpropagating through all token logits becomes memory-intensive for long sequences. Existing memory-saving app...

Yongliang Miao, Shuang Liu, Yan-Guang Liu et al. · 0 citations
#machine learning Preprint Sep 2026

BiasReducer: Adaptive Bias Mitigation for Reward Models

Reward models score responses from large language models (LLMs) and guide LLM training toward human preferences. However, reward models can favor superficial attributes such as length or confidence, leading LLMs to produce higher-scoring but not more correct responses. Existing mitigation methods either retrain the rew...

Shuang Liu, Yongliang Miao, Yan-Guang Liu et al. · 0 citations

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