sparse_grid_level_sequence

Sequence of sparse grid levels used in a multi-stage expansion

Specification

• Alias: None

• Arguments: INTEGERLIST

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Optional		dimension_preference	A set of weights specifying the realtive importance of each uncertain variable (dimension)
Optional (Choose One)	Optional (Choose One)	nodal	Employ a nodal sparse grid construction in stochastic collocation
		hierarchical	Employ a hierarchical sparse grid construction
Optional (Choose One)	Quadrature Rule Growth	restricted	Restrict the growth rates for nested and non-nested rules can be synchronized for consistency.
		unrestricted	Overide the default restriction of growth rates for nested and non-nested rules that are by defualt synchronized for consistency.
Optional (Choose One)	Quadrature Rule Nesting	nested	Enforce use of nested quadrature rules if available
		non_nested	Enforce use of non-nested quadrature rules

Description

Each level entry of the sparse_grid_level_sequence applies to one expansion within a multi-stage expansion. Current multi-stage expansions that support sparse grid level sequences include multilevel polynomial chaos, multifidelity polynomial chaos, or multifidelity stochastic collocation expansions.

If adaptive refinement is active, then this sequence specifies the starting point for each level within either an individual or integrated refinement approach.

A corresponding scalar specification is documented at, e.g., sparse_grid_level