Author

Jaehyung Kim

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Preprint Jul 2026

SyRuP: Enhancing System-Prompt Following via Reward-Guided Prediction in LLM Decoding

SyRuP is introduced, a decoding-time framework for improving system-prompt adherence while keeping the base LM frozen, and results suggest that explicit token-level guidance is an effective and practical mechanism for reliable system-prompt following.

Seoyeon Kim, Minjae Kang, Jaehyung Kim · 0 citations

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, Jinhyeong Kim, Dongseok Lee et al. · 0 citations