Dakota Reference Manual
Version 6.4
LargeScale Engineering Optimization and Uncertainty Analysis

Overide the default restriction of growth rates for nested and nonnested rules that are by defualt synchronized for consistency.
Alias: none
Argument(s): none
In the quadrature and sparse grid cases, growth rates for nested and nonnested rules can be synchronized for consistency. For a nonnested Gauss rule used within a sparse grid, linear onedimensional growth rules of are used to enforce odd quadrature orders, where l is the grid level and m is the number of points in the rule. The precision of this Gauss rule is then . For nested rules, order growth with level is typically exponential; however, the default behavior is to restrict the number of points to be the lowest order rule that is available that meets the onedimensional precision requirement implied by either a level l for a sparse grid ( ) or an order m for a tensor grid ( ). This behavior is known as "restricted growth" or "delayed sequences." To override this default behavior in the case of sparse grids, the unrestricted keyword can be used; it cannot be overridden for tensor grids using nested rules since it also provides a mapping to the available nested rule quadrature orders. An exception to the default usage of restricted growth is the dimension_adaptive p_refinement generalized sparse grid case described previously, since the ability to evolve the index sets of a sparse grid in an unstructured manner eliminates the motivation for restricting the exponential growth of nested rules.