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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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<html> <head> <title> Netlab Reference Manual mlpderiv </title> </head> <body> <H1> mlpderiv </H1> <h2> Purpose </h2> Evaluate derivatives of network outputs with respect to weights. <p><h2> Synopsis </h2> <PRE> g = mlpderiv(net, x)</PRE> <p><h2> Description </h2> <CODE>g = mlpderiv(net, x)</CODE> takes a network data structure <CODE>net</CODE> and a matrix of input vectors <CODE>x</CODE> and returns a three-index matrix <CODE>g</CODE> whose <CODE>i</CODE>, <CODE>j</CODE>, <CODE>k</CODE> element contains the derivative of network output <CODE>k</CODE> with respect to weight or bias parameter <CODE>j</CODE> for input pattern <CODE>i</CODE>. The ordering of the weight and bias parameters is defined by <CODE>mlpunpak</CODE>. <p><h2> See Also </h2> <CODE><a href="mlp.htm">mlp</a></CODE>, <CODE><a href="mlppak.htm">mlppak</a></CODE>, <CODE><a href="mlpgrad.htm">mlpgrad</a></CODE>, <CODE><a href="mlpbkp.htm">mlpbkp</a></CODE><hr> <b>Pages:</b> <a href="index.htm">Index</a> <hr> <p>Copyright (c) Ian T Nabney (1996-9) </body> </html>