The Brouwer Lecture 2005: Statistical estimation with model selection

Details The Brouwer Lecture 2005: Statistical estimation with model selection The Brouwer Lecture 2005: Statistical estimation with model selection

2006-05-08

arxiv.org/abs/math/0605187v2

Mathematics

Statistics Theory

Scientific paper

The purpose of this paper is to explain the interest and importance of (approximate) models and model selection in Statistics. Starting from the very elementary example of histograms we present a general notion of finite dimensional model for statistical estimation and we explain what type of risk bounds can be expected from the use of one such model. We then give the performance of suitable model selection procedures from a family of such models. We illustrate our point of view by two main examples: the choice of a partition for designing a histogram from an n-sample and the problem of variable selection in the context of Gaussian regression.

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