tensor_grid
Use sub-sampled tensor-product quadrature points to build a polynomial chaos expansion.
Specification
Alias: None
Arguments: 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.
