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wolffd@0 1 <html>
wolffd@0 2 <head>
wolffd@0 3 <title>
wolffd@0 4 Netlab Reference Manual netgrad
wolffd@0 5 </title>
wolffd@0 6 </head>
wolffd@0 7 <body>
wolffd@0 8 <H1> netgrad
wolffd@0 9 </H1>
wolffd@0 10 <h2>
wolffd@0 11 Purpose
wolffd@0 12 </h2>
wolffd@0 13 Evaluate network error gradient for generic optimizers
wolffd@0 14
wolffd@0 15 <p><h2>
wolffd@0 16 Synopsis
wolffd@0 17 </h2>
wolffd@0 18 <PRE>
wolffd@0 19 g = netgrad(w, net, x, t)</PRE>
wolffd@0 20
wolffd@0 21
wolffd@0 22 <p><h2>
wolffd@0 23 Description
wolffd@0 24 </h2>
wolffd@0 25
wolffd@0 26 <p><CODE>g = netgrad(w, net, x, t)</CODE> takes a weight vector <CODE>w</CODE> and a network
wolffd@0 27 data structure <CODE>net</CODE>, together with the matrix <CODE>x</CODE> of input
wolffd@0 28 vectors and the matrix <CODE>t</CODE> of target vectors, and returns the
wolffd@0 29 gradient of the error function evaluated at <CODE>w</CODE>.
wolffd@0 30
wolffd@0 31 <p><h2>
wolffd@0 32 See Also
wolffd@0 33 </h2>
wolffd@0 34 <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>
wolffd@0 35 <b>Pages:</b>
wolffd@0 36 <a href="index.htm">Index</a>
wolffd@0 37 <hr>
wolffd@0 38 <p>Copyright (c) Ian T Nabney (1996-9)
wolffd@0 39
wolffd@0 40
wolffd@0 41 </body>
wolffd@0 42 </html>