Adaptation and Unsupervised Learning

Part of Advances in Neural Information Processing Systems 15 (NIPS 2002)

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Peter Dayan, Maneesh Sahani, Gregoire Deback


Adaptation is a ubiquitous neural and psychological phenomenon, with a wealth of instantiations and implications. Although a basic form of plasticity, it has, bar some notable exceptions, attracted computational theory of only one main variety. In this paper, we study adaptation from the perspective of factor analysis, a paradigmatic technique of unsuper- vised learning. We use factor analysis to re-interpret a standard view of adaptation, and apply our new model to some recent data on adaptation in the domain of face discrimination.