uniform

Refine an expansion uniformly in all dimensions.

Specification

• Alias: None

• Arguments: None

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Required (Choose One)	Uniform Refinement Approach	increment_start_rank	candidate generation by advancement of starting rank
		increment_start_order	candidate generation by advancement of starting basis order
		increment_max_rank	candidate generation by advancement of maximum rank
		increment_max_order	candidate generation by advancement of maximum basis order
		increment_max_rank_order	candidate generation by advancement of maximum rank and maximum basis order

Description

The quadrature_order or sparse_grid_level are ramped by one on each refinement iteration until either of the two convergence controls is satisfied. For the uniform refinement case with regression approaches, the expansion_order is ramped by one on each iteration while the oversampling ratio (either defined by collocation_ratio or inferred from collocation_points based on the initial expansion) is held fixed.