Adaptive estimation for an inverse regression model with unknown operator

Marteau Clement and Loubes Jean-Michel
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Loubes Jean-Michel: Université de Toulouse 3, Institut de Mathématiques, Toulouse, Frankreich

Statistics & Risk Modeling, 2012, vol. 29, issue 3, 215-242

Abstract: We are interested in the problem of estimating a regression function φ observed with a correlated noise Y = φ(X)+U. Contrary to the usual regression model, U is not centered conditionaly on X but rather on an observed variable W. Hence this model turns to be a difficult inverse problem where the corresponding operator is unknown since it is related to the joint distribution of (X,W). We focus on the case where the eigenvalues of the corresponding operator are observed with small perturbations and, using a well adapted spectral cut-off estimation procedure, we build a data driven estimates and derive an oracle inequality.

Keywords: inverse problems; model selection; unknown operator (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1524/strm.2012.1044

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