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Radial basis function regularization for linear inverse problems with random noise

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  • Valencia, Carlos
  • Yuan, Ming

Abstract

In this paper, we study the statistical properties of the method of regularization with radial basis functions in the context of linear inverse problems. Radial basis function regularization is widely used in machine learning because of its demonstrated effectiveness in numerous applications and computational advantages. From a statistical viewpoint, one of the main advantages of radial basis function regularization in general and Gaussian radial basis function regularization in particular is their ability to adapt to varying degrees of smoothness in a direct problem. We show here that similar approaches for inverse problems not only share such adaptivity to the smoothness of the signal but also can accommodate different degrees of ill-posedness. These results render further theoretical support to the superior performance observed empirically for radial basis function regularization.

Suggested Citation

  • Valencia, Carlos & Yuan, Ming, 2013. "Radial basis function regularization for linear inverse problems with random noise," Journal of Multivariate Analysis, Elsevier, vol. 116(C), pages 92-108.
    • Handle: RePEc:eee:jmvana:v:116:y:2013:i:c:p:92-108
    DOI: 10.1016/j.jmva.2012.09.007
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