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<html><head><title>Netlab Reference Manual hbayes</title></head><body><H1> hbayes</H1><h2>Purpose</h2>Evaluate Hessian of Bayesian error function for network.<p><h2>Synopsis</h2><PRE>h = hbayes(net, hdata)[h, hdata] = hbayes(net, hdata)</PRE><p><h2>Description</h2><CODE>h = hbayes(net, hdata)</CODE> takes a network data structure <CODE>net</CODE> together the data contribution to the Hessianfor a set of inputs and targets.It returns the regularised Hessian using any zero mean Gaussian priorson the weights defined in<CODE>net</CODE>. In addition, if a <CODE>mask</CODE> is defined in <CODE>net</CODE>, thenthe entries in <CODE>h</CODE> that correspond to weights with a 0 in themask are removed.<p><CODE>[h, hdata] = hbayes(net, hdata)</CODE> additionally returns thedata component of the Hessian.<p><h2>See Also</h2><CODE><a href="gbayes.htm">gbayes</a></CODE>, <CODE><a href="glmhess.htm">glmhess</a></CODE>, <CODE><a href="mlphess.htm">mlphess</a></CODE>, <CODE><a href="rbfhess.htm">rbfhess</a></CODE><hr><b>Pages:</b><a href="index.htm">Index</a><hr><p>Copyright (c) Ian T Nabney (1996-9)</body></html>⌨️ 快捷键说明
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