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Convergence properties of the expected improvement algorithm with fixed mean and covariance functions. (English) Zbl 1419.62200
Summary: This paper deals with the convergence of the expected improvement algorithm, a popular global optimization algorithm based on a Gaussian process model of the function to be optimized. The first result is that under some mild hypotheses on the covariance function \(k\) of the Gaussian process, the expected improvement algorithm produces a dense sequence of evaluation points in the search domain, when the function to be optimized is in the reproducing kernel Hilbert space generated by \(k\). The second result states that the density property also holds for \(P\)-almost all continuous functions, where \(P\) is the (prior) probability distribution induced by the Gaussian process.

62L05 Sequential statistical design
62F15 Bayesian inference
90C30 Nonlinear programming
Full Text: DOI arXiv
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