Statistical Learning Theory and Stochastic Optimization: Ecole d'Ete de Probabilites de Saint-Flour XXXI - 2001

Olivier Catoni

Statistical Learning Theory and Stochastic Optimization: Ecole d'Ete de Probabilites de Saint-Flour XXXI - 2001
Format
Paperback
Publisher
Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Country
Germany
Published
25 August 2004
Pages
284
ISBN
9783540225720

Statistical Learning Theory and Stochastic Optimization: Ecole d'Ete de Probabilites de Saint-Flour XXXI - 2001

Olivier Catoni

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Statistical learning theory is aimed at analyzing complex data with necessarily approximate models. This book is intended for an audience with a graduate background in probability theory and statistics. It will be useful to any reader wondering why it may be a good idea, to use as is often done in practice a notoriously wrong’‘ (i. e. over-simplified) model to predict, estimate or classify. This point of view takes its roots in three fields: information theory, statistical mechanics, and PAC-Bayesian theorems. Results on the large deviations of trajectories of Markov chains with rare transitions are also included. They are meant to provide a better understanding of stochastic optimization algorithms of common use in computing estimators. The author focuses on non-asymptotic bounds of the statistical risk, allowing one to choose adaptively between rich and structured families of models and corresponding estimators. Two mathematical objects pervade the book: entropy and Gibbs measures. The goal is to show how to turn them into versatile and efficient technical tools, that will stimulate further studies and results.

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