truncation_method

Metric that estimates active subspace size

Specification

  • Alias: None

  • Arguments: None

  • Default: constantine

Child Keywords:

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

Optional

cross_validation

Truncate the subspace to minimize surrogate cross-validation error

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.