Dakota Reference Manual  Version 6.4
Large-Scale Engineering Optimization and Uncertainty Analysis
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Pattern basis selection


Alias: none

Argument(s): none

Default: coordinate

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
(Choose One)
Group 1 coordinate Use coordinate directions as search pattern
simplex Use a minimal simplex for the search pattern


The particular form of the search pattern is controlled by the pattern_basis specification. If pattern_basis is coordinate basis, then the pattern search uses a plus and minus offset in each coordinate direction, for a total of 2n function evaluations in the pattern. This case is depicted in Figure 5.3 for three coordinate dimensions.