Dakota Reference Manual  Version 6.15
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trend


This keyword enables the use of deterministic polynomial trend function

Specification

Alias: none

Argument(s): none

Default: reduced_quadratic

Child Keywords:

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Required
(Choose One)
Trend Order (Group 1) 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.