Dakota Reference Manual  Version 6.4
Large-Scale Engineering Optimization and Uncertainty Analysis
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tensor_grid


Use sub-sampled tensor-product quadrature points to build a polynomial chaos expansion.

Specification

Alias: none

Argument(s): INTEGERLIST

Default: regression with LHS sample set (point collocation)

Description

Tthe collocation grid is defined using a subset of tensor-product quadrature points: the order of the tensor-product grid is selected as one more than the expansion order in each dimension (to avoid sampling at roots of the basis polynomials) and then the tensor multi-index is uniformly sampled to generate a non-repeated subset of tensor quadrature points.