numerical_gradients

Gradients are needed and will be approximated by finite differences

Specification

• Alias: None

• Arguments: None

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Optional		method_source	Specify which finite difference routine is used
Optional (Choose One)	Gradient Source	dakota	(Default) Use internal Dakota finite differences algorithm
		vendor	Use non-Dakota fd algorithm
Optional		interval_type	Specify how to compute gradients and hessians
Optional (Choose One)	Finite Difference Type	forward	(Default) Use forward differences
		central	Use central differences
Optional		fd_step_size	Step size used when computing gradients and Hessians

Description

The numerical_gradients specification means that gradient information is needed and will be computed with finite differences using either the native or one of the vendor finite differencing routines.