Preprint
Aug 2026
SPECTRA: Subspace-Preserving Embedding Calibration, Transport, and Replay for Fully Few-Shot Class-Incremental Audio Classification
SPECTRA is a framework built on a frozen encoder which adds three components, a lightweight trainable adapter that calibrates the generic embeddings to the task, an exemplar-free anti-forgetting scheme, and a transductive optimal-transport refinement of prototypes at test time.
Giries Abu Ayoub, L. Mualem, Simon Korman
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