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


Metric that estimates active subspace size

Specification

Alias: none

Argument(s): none

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Optional bing_li

Use the Bing Li "ladle" diagnostic to truncate subspace

Optional constantine

Use the Constantine diagnostic to truncate subspace

Optional energy

Truncate the subspace based on eigenvalue energy

Description

Metric that controls how many basis vectors are retained in the active subspace.

Default Behavior

The default is to use the constantine diagnostic.

Usage Tips

If the automated subspace identification methods do not yield desirable results, consider using the explicit dimension truncation option.