Dakota Reference Manual  Version 6.4
Large-Scale Engineering Optimization and Uncertainty Analysis
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mutation_type


Select a mutation type

Specification

Alias: none

Argument(s): none

Default: offset_normal

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Required
(Choose One)
Group 1 replace_uniform Replace coordinate with randomly generated value
offset_normal Set mutation offset to use a normal distribution
offset_cauchy Use a Cauchy distribution for the mutation offset
offset_uniform Set mutation offset to use a uniform distribution
Optional non_adaptive Disable self-adaptive mutation

Description

The mutation_type controls what approach is employed in randomly modifying continuous design variables within the EA population. Each of the mutation methods generates coordinate-wise changes to individuals, usually by adding a random variable to a given coordinate value (an offset_* mutation), but also by replacing a given coordinate value with a random variable (a replace_* mutation).

Discrete design variables are always mutated using the offset_uniform method.