Preprint
Aug 2026
From Patches to Evidence Balls: Class-Conditioned Evidence Retrieval for Few-Shot Whole Slide Image Classification
EviBall reformulates few-shot WSI classification as structured evidence retrieval and competition among candidate classes, and reduces the reliance on learning an unconstrained global aggregation mechanism from scarce slide-level labels.
Di Zhang, Li Zhang, Jia-Shuai Liu et al.
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