Maxisets for Model Selection

Details Maxisets for Model Selection Maxisets for Model Selection

2008-02-28

arxiv.org/abs/0802.4192v2

Mathematics

Statistics Theory

Scientific paper

We address the statistical issue of determining the maximal spaces (maxisets) where model selection procedures attain a given rate of convergence. By considering first general dictionaries, then orthonormal bases, we characterize these maxisets in terms of approximation spaces. These results are illustrated by classical choices of wavelet model collections. For each of them, the maxisets are described in terms of functional spaces. We take a special care of the issue of calculability and measure the induced loss of performance in terms of maxisets.

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