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Understanding deep convolutional networks
1École Normale Supérieure, CNRS, PSL, 45 rue d'Ulm, Paris, France stephane.mallat@ens.fr.
Abstract:
Deep convolutional networks provide state-of-the-art classifications and regressions results over many high-dimensional problems. We review their architecture, which scatters data with a cascade of linear filter weights and nonlinearities. A mathematical framework is introduced to analyse their properties. Computations of invariants involve multiscale contractions with wavelets, the linearization of hierarchical symmetries and sparse separations. Applications are discussed.
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