Dakota Reference Manual  Version 6.13
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correction_order


Trend function order of the model discrepancy

Specification

Alias: none

Argument(s): none

Default: 2

Child Keywords:

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Required
(Choose One)
Correction Order (Group 1) constant Use constant trend discrepancy function
linear Use linear trend discrepancy function
quadratic Use quadratic trend discrepancy function

Description

Whether Gaussian process or polynomial regression model is selected as the discrepancy formulation, the order of the trend function may be specified using the correction_order command followed by either constant, linear, or quadratic.

Note that for Dakota 6.8 and earlier, this keyword only applies to discrepancy calculations for scalar responses. For field responses, a Gaussian process model with a quadratic function is used by default.