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demo1big.html
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<!DOCTYPE html>
<HTML lang="en">
<HEAD>
<TITLE>First demo - the SOM learning algorithm</TITLE>
<link rel="stylesheet" href="style.css">
</HEAD>
<BODY>
<h1>First demo - the SOM learning algorithm</h1>
In this demo we have a one-dimensional map with eight
one-dimensional units. Initially the map units are initialized to
random values. The map is trained with random data as input and as the
result, the map will become organized. <p>
The map can be trained either automatically or manually. During
automatic training the map is fed with random values at a constant
rate. In manual training you can yourself select the value used for
training (the input vector) by clicking on the
<a href="demo1instr.html#input">input vector</a>
(the leftmost slider with coloured background) with the mouse or you
can press the <b>SPACE</b> key to teach one step with a random vector.
In both automatic and manual training the state of the map is shown
after each step and the change between the previous and the new state
is shown with the yellow areas in the map units.<p>
Use the <b>START/STOP</b> button to start and stop the automatic
training. The <b>RANDOMIZE</b> button will set the map units to
random values. Use the text field to set the <i>alpha</i> learning
rate parameter. Map units are also editable with the mouse. <p>
<a href="demo1instr.html">More detailed information</a> about the
first demo is also available. But now, lets see that demo:
<hr>
<a name="applet"></a>
<APPLET CODE="SOMDemo1.class" ARCHIVE="somdemo.jar" WIDTH=600 HEIGHT=380>
<PARAM NAME=IPS VALUE=5>
<PARAM NAME=UNITW VALUE=64>
<PARAM NAME=UNITH VALUE=300>
<PARAM NAME=UNITS VALUE=8>
<PARAM NAME=ALPHA VALUE="0.2">
<PARAM NAME=FONTSIZE VALUE=24>
<PARAM NAME=BORDERSIZE VALUE=2>
<strong>
Java SOM applet not started. Possibly Java has been turned off or
your browser doesn't support Java applets...
</strong>
</APPLET>
<hr>
<i>Go to the <a href="demo2.html">second demo</a></i>.
<footer>
<div>
*
<a href="index.html"><strong>Demo Index</strong></a>
*
<a href="http://www.cis.hut.fi/nnrc/index.html"><strong>Neural Networks Research Centre</strong></a>
*
</div>
<div>
<!-- hhmts start -->
Last modified: Wed Sep 29 19:40:25 1999
<!-- hhmts end -->
</div>
</footer>
</body></html>