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Author

Zhen Zhao

University of Sydney

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Preprint Jul 2026

SigLIP-HD by Fine-to-Coarse Supervision

This work studies an interesting problem: how to achieve fine visual perception under lower cost without larger images, and builds this framework on the advanced SigLIP 2 model, which consistently delivers stronger results than the baseline model, especially on OCR-related tasks.

Lihe Yang, Zhen Zhao, Hengshuang Zhao · 0 citations
#artificial intelligence Preprint Aug 2026

Learning from Hard Prompts: Difficulty-aware Advantage Amplification in Dynamic Sampling

Direct Advantage Amplification (DAA), which amplifies the advantages of hard-to-sample correct responses on hard prompts, as obtained by Dynamic Sampling, is proposed, which ensures that, when Dynamic Sampling is used, these hard-to-sample responses can be effectively capitalized on, implying higher training efficiency.

Si-Yuan Gan, Yu-Hang Li, Xiran Wang et al. · 0 citations

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