rotation_method

Method used to build the rotation matrix

Specification

• Alias: None

• Arguments: None

• Default: norm

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Required (Choose One)	Rotation Method	unranked	Use the unranked method to obtain the rotation matrix
		ranked	Use the ranked method to obtain the rotation matrix

Description

The rotation matrix for the Adapted Basis method is built starting from a matrix which includes the linear PCE coefficients. The entries of the first row are the linear PCE coefficients. For all the other rows, each row has only one nonzero entry. Depending on the way used to construct all the rows, from the second to last one, there are two implemented methods, unranked and ranked. A followed Gram_schmidt process is applied on the resulting matrix to make it an isometry.

Default Behavior

The default is to use the ranked.

Usage Tips

Examples

The following method block

model
  id_model = 'SUBSPACE'
  adapted_basis
    truth_model_pointer = 'FULLSPACE'
    sparse_grid_level = 1
    rotation_method = unranked

changes the default method to the unranked method.