Blurb:: Number of collocation points used to estimate expansion coefficients

Description::
Specify the number of collocation points used to estimate expansion coefficients
using regression approaches.

A corresponding sequence specification is documented at, e.g.,
\ref method-multifidelity_polynomial_chaos-expansion_order_sequence-collocation_ratio-collocation_points_sequence and
\ref method-multilevel_polynomial_chaos-expansion_order_sequence-collocation_ratio-collocation_points_sequence

Topics::
Examples::
Theory::
Faq::
See_Also::
method-multifidelity_polynomial_chaos-expansion_order_sequence-collocation_ratio-collocation_points_sequence
method-multilevel_polynomial_chaos-expansion_order_sequence-collocation_ratio-collocation_points_sequence