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Beomsik Cho

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#computer vision Preprint Aug 2026

LookBack: Where and How to Score LVLM Responses via Visual Reference Usage

LookBack, a training-free LVLM response scoring method that augments token likelihood with visual lookback score, a lightweight measure of how strongly each response token refers to image tokens, consistently improves Best-of-$N$ selection over existing baselines with negligible additional overhead.

Beomsik Cho, Jin-Ha Kim, Dongseok Lee et al. · 0 citations