Bernstein polynomials and learning theory

  • Authors:
  • Dietrich Braess;Thomas Sauer

  • Affiliations:
  • Ruhr- Universität Bochum, Fakultät für Mathematik, Universitätsstraße 150, NA 4/27, D-44780 Bochum, Germany;Justus-Liebig-Universität Gießen, Lehrstuhl fü Numerische Mathematik, Heinrich-Buff-Ring 44, D-35392 Gießen, Germany

  • Venue:
  • Journal of Approximation Theory
  • Year:
  • 2004

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Abstract

When learning processes depend on samples but not on the order of the information in the sample, then the Bernoulli distribution is relevant and Bernstein polynomials enter into the analysis. We derive estimates of the approximation of the entropy function xlogx that are sharper than the bounds from Voronovskaja's theorem. In this way we get the correct asymptotics for the Kullback-Leibler distance for an encoding problem.