Dakota Reference Manual: point_selection

| Dakota Reference Manual Version 6.15 Explore and Predict with Confidence

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point_selection

Enable greedy selection of well-spaced build points

## Topics

This keyword is related to the topics:

- surrogate_models

## Specification

Alias: none

Argument(s): none

Default: no point selection

## Description

The Dakota Gaussian Process model has a `point_selection` option (default off) that uses a greedy algorithm to select a well-spaced subset of points prior to the construction of the GP. In this case, the GP will only interpolate the selected subset. Typically, one should not need point selection in trust-region methods because a small number of points are used to develop a surrogate within each trust region. Point selection is most beneficial when constructing with a large number of points, typically more than order one hundred, though this depends on the number of variables and spacing of the sample points.