Author

Yiming Qian

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Preprint Aug 2026

The Blending Ratio Is Not Where the Performance Is: Diagnosing Prototype Blending for Few-Shot Adaptation of Vision-Language Models

This work proves the mechanism and bound its share of the damage at 26% by a counterfactual, and finds the ceiling in the model class, not the hyperparameter: the ratio can be set near-optimally for free, and it is still not where the performance is.

Liangzhi Li, Bowen Wang, Yiming Qian et al. · 0 citations