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cs.LG2026
Backbone-Equated Diffusion OOD via Sparse Internal Snapshots
Yadang Alexis Rouzoumka, Jean Pinsolle, Eugénie Terreaux +3
Fair comparison between diffusion-based OOD detectors is challenging, as conclusions can vary with backbone choice, corruption parameterization, and test-time budget. We address th…
cs.LG2026
GEPC: Group-Equivariant Posterior Consistency for Out-of-Distribution Detection in Diffusion Models
Yadang Alexis Rouzoumka, Jean Pinsolle, Eugénie Terreaux +3
Diffusion models learn a time-indexed score field that often inherits approximate equivariances (flips, rotations, circular shifts) from in-distribut…