trend

This keyword enables the use of deterministic polynomial trend function

Specification

• Alias: None

• Arguments: None

• Default: reduced_quadratic

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Required (Choose One)	Trend Order	none	No trend function
		constant	Constant trend function
		linear	Use a linear polynomial or trend function
		reduced_quadratic	Quadratic polynomials - main effects only
		quadratic	Use a quadratic polynomial or trend function

Description

Enable the use of a deterministic polynomial trend function whose coefficients are found through regression. The user may choose a constant, linear, or quadratic polynomial.

Default Behavior Defaults to no trend when keyword is absent.