som_drsignif

sig = som_drsignif(sigmea,Cm)

 SOM_DRSIGNIF Significance measure from confusion matrix between two clusters and a rule.

 sig = som_drsignif(sigmea,Cm)
 
  sigmea   (string) significance measure: 'accuracy', 
                    'mutuconf' (default), or 'accuracyI'.
                    (See definitions below).
  Cn                Vectorized confusion matrix, or a matrix of such vectors.
           (vector) [a, c, b, d] (see below)
           (matrix) [[a1,c1,b1,d1], ..., [an,cn,bn,dn]]

  sig      (vector) length=n, significance values 

 The confusion matrix Cm below between group (G) and contrast group (not G)
 and rule (true - false) is used to determine the significance values:

          G    not G    
       ---------------    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_DREVAL, SOM_DRMAKE.