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Jaekeol Choi

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Preprint Aug 2026

When Does Supervised Fine-Tuning Reduce Instruction Sensitivity?

Experiments on ESCI-English show that free-generation and likelihood-based forced-choice evaluation can yield qualitatively different robustness conclusions even when valid-label generation is nearly perfect and average task performance is similar, and SFT does not uniformly reduce instruction sensitivity.

Jaekeol Choi · 0 citations