A format-matched control shows perturbation-based selection gives no reliable accuracy gain over spending the same short, no-CoT budget on the original image.
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It's the Decoding Format, Not the Perturbation: Auditing Consistency-Based Selection for Vision-Language Test-Time Scaling
A format-matched control shows perturbation-based selection gives no reliable accuracy gain over spending the same short, no-CoT budget on the original image.