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| author | ziejd2 | 2018-03-14 23:23:33 -0500 |
|---|---|---|
| committer | GitHub | 2018-03-14 23:23:33 -0500 |
| commit | 1ff6baa44e22b91eefb48aea6f3befa078c0489b (patch) | |
| tree | e0fd79d2e32fd2aedda2eadaed0f19af3514c520 /sourcecodes/bnt-master/nethelp3.3/demopt1.htm | |
| parent | 6882395afdadf4e982b25b5215071a0932730950 (diff) | |
| parent | c80226899f5cdd9f11c163817d59445213f5bef0 (diff) | |
| download | BNW-1ff6baa44e22b91eefb48aea6f3befa078c0489b.tar.gz | |
Merge pull request #1 from ziejd2/octave_php_separate
Octave php separate
Diffstat (limited to 'sourcecodes/bnt-master/nethelp3.3/demopt1.htm')
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diff --git a/sourcecodes/bnt-master/nethelp3.3/demopt1.htm b/sourcecodes/bnt-master/nethelp3.3/demopt1.htm new file mode 100644 index 00000000..b2511711 --- /dev/null +++ b/sourcecodes/bnt-master/nethelp3.3/demopt1.htm @@ -0,0 +1,52 @@ +<html> +<head> +<title> +Netlab Reference Manual demopt1 +</title> +</head> +<body> +<H1> demopt1 +</H1> +<h2> +Purpose +</h2> +Demonstrate different optimisers on Rosenbrock's function. + +<p><h2> +Synopsis +</h2> +<PRE> +demopt1 +demopt1(xinit) +</PRE> + + +<p><h2> +Description +</h2> +The four general optimisers (quasi-Newton, conjugate gradients, +scaled conjugate gradients, and gradient descent) are applied to +the minimisation of Rosenbrock's well known `banana' function. +Each optimiser is run for at most 100 cycles, and a stopping +criterion of 1.0e-4 is used for both position and function value. +At the end, the trajectory of each algorithm is shown on a contour +plot of the function. + +<p><CODE>demopt1(xinit)</CODE> allows the user to specify a row vector with +two columns as the starting point. The default is the point [-1 1]. +Note that the contour plot has an x range of [-1.5, 1.5] and a y +range of [-0.5, 2.1], so it is best to choose a starting point in the +same region. + +<p><h2> +See Also +</h2> +<CODE><a href="conjgrad.htm">conjgrad</a></CODE>, <CODE><a href="graddesc.htm">graddesc</a></CODE>, <CODE><a href="quasinew.htm">quasinew</a></CODE>, <CODE><a href="scg.htm">scg</a></CODE>, <CODE><a href="rosen.htm">rosen</a></CODE>, <CODE><a href="rosegrad.htm">rosegrad</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 |