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| author | ziejd2 | 2017-09-28 15:04:40 -0500 |
|---|---|---|
| committer | ziejd2 | 2017-09-28 15:04:40 -0500 |
| commit | 8070dc963753142bb86c4ed698d91fd623ed28e7 (patch) | |
| tree | d0f6dd8fc46a49b819aa55c1a90faa14d8448883 /sourcecodes/bnt-master/nethelp3.3/pca.htm | |
| parent | 7cc31810d53176e805532b2789955f4eedbce6bb (diff) | |
| download | BNW-8070dc963753142bb86c4ed698d91fd623ed28e7.tar.gz | |
BNW using Octave instead of Matlab.
This version of BNW should perform the same as the original version. The only difference is that it uses Octave instead of Matlab when running BayesNet Toolbox during parameter learning. I am calling this BNW_1.02. It can be accessed at: compbio.uthsc.edu/BNW_1.02
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diff --git a/sourcecodes/bnt-master/nethelp3.3/pca.htm b/sourcecodes/bnt-master/nethelp3.3/pca.htm new file mode 100644 index 00000000..84fe3e38 --- /dev/null +++ b/sourcecodes/bnt-master/nethelp3.3/pca.htm @@ -0,0 +1,51 @@ +<html> +<head> +<title> +Netlab Reference Manual pca +</title> +</head> +<body> +<H1> pca +</H1> +<h2> +Purpose +</h2> +Principal Components Analysis + +<p><h2> +Synopsis +</h2> +<PRE> +PCcoeff = pca(data) +PCcoeff = pca(data, N) +[PCcoeff, PCvec] = pca(data) +</PRE> + + +<p><h2> +Description +</h2> + +<CODE>PCcoeff = pca(data)</CODE> computes the eigenvalues of the covariance +matrix of the dataset <CODE>data</CODE> and returns them as <CODE>PCcoeff</CODE>. These +coefficients give the variance of <CODE>data</CODE> along the corresponding +principal components. + +<p><CODE>PCcoeff = pca(data, N)</CODE> returns the largest <CODE>N</CODE> eigenvalues. + +<p><CODE>[PCcoeff, PCvec] = pca(data)</CODE> returns the principal components as +well as the coefficients. This is considerably more computationally +demanding than just computing the eigenvalues. + +<p><h2> +See Also +</h2> +<CODE><a href="eigdec.htm">eigdec</a></CODE>, <CODE><a href="gtminit.htm">gtminit</a></CODE>, <CODE><a href="ppca.htm">ppca</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 |