hesschek

Purpose

Use central differences to confirm correct evaluation of Hessian matrix.

Synopsis 

hesschek(net, x, t)
h = hesschek(net, x, t)

Description

hesschek(net, x, t) takes a network data structure net, together with input and target data matrices x and t, and compares the evaluation of the Hessian matrix using the function nethess and using central differences with the function neterr.

The optional return value h is the Hessian computed using nethess.

See Also

nethess, neterr
Pages: Index

Copyright (c) Ian T Nabney (1996-9)