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Netlab Reference Manual netgrad
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<H1> netgrad
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<h2>
Purpose
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Evaluate network error gradient for generic optimizers

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Synopsis
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<PRE>
g = netgrad(w, net, x, t)</PRE>


<p><h2>
Description
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<p><CODE>g = netgrad(w, net, x, t)</CODE> takes a weight vector <CODE>w</CODE> and a network
data structure <CODE>net</CODE>, together with the matrix <CODE>x</CODE> of input
vectors and the matrix <CODE>t</CODE> of target vectors, and returns the
gradient of the error function evaluated at <CODE>w</CODE>.

<p><h2>
See Also
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<CODE><a href="mlp.htm">mlp</a></CODE>, <CODE><a href="neterr.htm">neterr</a></CODE>, <CODE><a href="netopt.htm">netopt</a></CODE><hr>
<b>Pages:</b>
<a href="index.htm">Index</a>
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<p>Copyright (c) Ian T Nabney (1996-9)


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author	wolffd
date	Tue, 10 Feb 2015 15:05:51 +0000
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