mdnerr.htm
来自「这是包含pca和ppca等诸多源程序的工具箱」· HTM 代码 · 共 46 行
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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 datastructure <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 thetarget data under the conditional density given by the mixture modelparameterised by the MLP. Each row of <CODE>x</CODE> corresponds to oneinput 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>
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