📄 som_dreval.html

📁 Kohonen的SOM软件包
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"><html><head><title>SOM Toolbox / som_dreval </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> som_dreval </H1><P><B> [sig,cm,truex,truey] = som_dreval(sR,D,sigmea,inds1,inds2,andor)</B></P><PRE> SOM_DREVAL Evaluate the significance of the given descriptive rule. [sig,Cm,truex,truey] = som_dreval(cR,D,sigmea,[inds1],[inds2],[andor])    sR      (struct) a rule struct, or an array of rule structs  D       (matrix) the data, of size [dlen x nr]  sigmea  (string) significance measure ('accuracy','accuracyI','mutuconf'),                    see definitions below  [inds1] (vector) indeces belonging to the group                   (by default: the whole data set)   [inds2] (vector) indeces belonging to the contrast group                   (by default: the rest of the data set)  [andor] (string) 'and' or 'or': which conjunction operator to use                   to join the rules for each variable  sig     (scalar) significance of the rule  cm      (vector) length 4, vectorized confusion matrix ([a,c,b,d]: see below)  truex   (vector) binary vector indicating for each item in the                    group whether it was true or not  truey   (vector) binary vector indicating for each item in the                    contrast group whether it was true or not Descriptive rule significance is measured as the match between the  given groups (inds1 = G1, inds2 = G2) and the rule being true or false.           G1    G2          ---------------    accuracy  = (a+d) / (a+b+c+d) true  |  a  |   b   |           |--------------    mutuconf  =  a*a  / ((a+b)(a+c))  false |  c  |   d   |        ---------------    accuracyI =   a   / (a+b+c) See also  SOM_DRSIGNIF, SOM_DRMAKE.</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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