📄 neural_gas.html

📁 Kohonen的SOM软件包

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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"><html><head><title>SOM Toolbox / neural_gas </title></head><body bgcolor=#f0f0f0><table border=0 width="100%" cellpadding=0 cellspacing=0><tr><td valign=baseline><font size=+2>SOM Toolbox</font></td><td valign=baseline align=center><a href="somtoolbox.html">Online documentation</td><td valign=baseline align=right><a href="http://www.cis.hut.fi/projects/somtoolbox/" target="_top">http://www.cis.hut.fi/projects/somtoolbox/</a></td></tr></table><hr><H1> neural_gas </H1><P><B> [Neurons] = neural_gas(D,n,epochs,alpha0,lambda0)</B></P><PRE>NEURAL_GAS Quantizes the data space using the neural gas algorithm. Neurons = neural_gas(D, n, epochs, [alpha0], [lambda0])   C = neural_gas(D,50,10);   sM = som_map_struct(sD);    sM.codebook = neural_gas(sD,size(sM.codebook,1),10);  Input and output arguments ([]'s are optional):   D          (matrix) the data matrix, size dlen x dim              (struct) a data struct   n          (scalar) the number of neurons   epochs     (scalar) the number of training epochs (the number of                       training steps is dlen*epochs)   [alpha0]   (scalar) initial step size, 0.5 by default   [lambda0]  (scalar) initial decay constant, n/2 by default   Neurons    (matrix) the neuron matrix, size n x dim See also SOM_MAKE, SOM_KMEANS.</PRE><p><hr><br><center>[ <a href="somtoolbox.html">SOM Toolbox online doc</a> ]</center><br><!-- Last updated: May 30 2002 --></body></html>

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