Examples of inconsistency in optimization by expected improvement

  • Authors:
  • Dmitry Yarotsky

  • Affiliations:
  • Datadvance llc, Moscow, Russia 109028 and Institute for Information Transmission Problems, Moscow, Russia 127994

  • Venue:
  • Journal of Global Optimization
  • Year:
  • 2013

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Abstract

We consider the 1D Expected Improvement optimization based on Gaussian processes having spectral densities converging to zero faster than exponentially. We give examples of problems where the optimization trajectory is not dense in the design space. In particular, we prove that for Gaussian kernels there exist smooth objective functions for which the optimization does not converge on the optimum.