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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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<html> <head> <title> Netlab Reference Manual mdnerr </title> </head> <body> <H1> mdnerr </H1> <h2> Purpose </h2> Evaluate error function for Mixture Density Network. <p><h2> Synopsis </h2> <PRE> e = mdnerr(net, x, t) </PRE> <p><h2> Description </h2> <CODE>e = mdnerr(net, x, t)</CODE> takes a mixture density network data structure <CODE>net</CODE>, a matrix <CODE>x</CODE> of input vectors and a matrix <CODE>t</CODE> of target vectors, and evaluates the error function <CODE>e</CODE>. The error function is the negative log likelihood of the target data under the conditional density given by the mixture model parameterised by the MLP. Each row of <CODE>x</CODE> corresponds to one input vector and each row of <CODE>t</CODE> corresponds to one target vector. <p><h2> See Also </h2> <CODE><a href="mdn.htm">mdn</a></CODE>, <CODE><a href="mdnfwd.htm">mdnfwd</a></CODE>, <CODE><a href="mdngrad.htm">mdngrad</a></CODE><hr> <b>Pages:</b> <a href="index.htm">Index</a> <hr> <p>Copyright (c) Ian T Nabney (1996-9) <p>David J Evans (1998) </body> </html>