Preprint
Jul 2026
Decodable but Not Detectable: A Leakage Fingerprint for Near-OOD Benchmarks
A corrected protocol and a validated leak diagnostic are presented, not a new OOD method: under the corrected protocol, perturbation signals are decodable but not detectable, and the perturbation method does not improve on plain Mahalanobis distance.
Vishnu Balachandran
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