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


Scales mutation across range of parameter

Specification

Alias: none

Argument(s): REAL

Default: 0.15

Description

The mutation_scale is a fraction in the range [0, 1] and is meant to help control the amount of variation that takes place when a variable is mutated. Its behavior depends on the selected mutation_type. For offset_normal and offset_cauchy, mutation_scale is multipled by the range of the variable being mutated to obtain the standard deviation of the offset. For offset_uniform, the range of possible deviation amounts is +/- 1/2 * (mutation_scale * variable range).