Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/nethelp3.3/gpinit.htm @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
---|---|
date | Tue, 10 Feb 2015 15:05:51 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/nethelp3.3/gpinit.htm Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,76 @@ +<html> +<head> +<title> +Netlab Reference Manual gpinit +</title> +</head> +<body> +<H1> gpinit +</H1> +<h2> +Purpose +</h2> +Initialise Gaussian Process model. + +<p><h2> +Synopsis +</h2> +<PRE> +net = gpinit(net, trin, trtargets, prior) +net = gpinit(net, trin, trtargets, prior) +</PRE> + + +<p><h2> +Description +</h2> +<CODE>net = gpinit(net, trin, trtargets)</CODE> takes a Gaussian Process data structure <CODE>net</CODE> +together +with a matrix <CODE>trin</CODE> of training input vectors and a matrix <CODE>trtargets</CODE> of +training target +vectors, and stores them in <CODE>net</CODE>. These datasets are required if +the corresponding inverse covariance matrix is not supplied to <CODE>gpfwd</CODE>. +This is important if the data structure is saved and then reloaded before +calling <CODE>gpfwd</CODE>. +Each row +of <CODE>trin</CODE> corresponds to one input vector and each row of <CODE>trtargets</CODE> +corresponds to one target vector. + +<p><CODE>net = gpinit(net, trin, trtargets, prior)</CODE> additionally initialises the +parameters in <CODE>net</CODE> from the <CODE>prior</CODE> data structure which contains the +mean and variance of the Gaussian distribution which is sampled from. + +<p><h2> +Example +</h2> +Suppose that a Gaussian Process model is created and trained with input data <CODE>x</CODE> +and targets <CODE>t</CODE>: +<PRE> + +net = gp(2, 'sqexp'); +net = gpinit(net, x, t); +% Train the network +save 'gp.net' net; +</PRE> + +Another Matlab program can now read in the network and make predictions on a data set +<CODE>testin</CODE>: +<PRE> + +load 'gp.net'; +pred = gpfwd(net, testin); +</PRE> + + +<p><h2> +See Also +</h2> +<CODE><a href="gp.htm">gp</a></CODE>, <CODE><a href="gpfwd.htm">gpfwd</a></CODE><hr> +<b>Pages:</b> +<a href="index.htm">Index</a> +<hr> +<p>Copyright (c) Ian T Nabney (1996-9) + + +</body> +</html> \ No newline at end of file