PROTON is a test-time online OOD detection module for medical VLMs that maintains a prototype bank from confident predictions and adaptively combines prototype distance with MCM scoring via variance statistics, improving AUROC across covariate, semantic, and far-OOD shifts on FLAIR+FIVES without tra
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PROTON: Prototype-Based Test-Time Online OOD Detection for Medical VLMs
PROTON is a test-time online OOD detection module for medical VLMs that maintains a prototype bank from confident predictions and adaptively combines prototype distance with MCM scoring via variance statistics, improving AUROC across covariate, semantic, and far-OOD shifts on FLAIR+FIVES without tra