Statistical Glossary
Discriminant Function:
In discriminant analysis , a discriminant function (DF) maps independent (discriminating) variables into a latent variable D. DF is usually postulated to be a linear function:
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The goal of discriminant analysis is to find such values of the coefficients {ai, i=0,...,N} that the distance between the mean values of DF is maximal for the two groups.
"Canonical root" is a synonym for "discriminant function".
For more information see http://www.resample.com/xlminer/help/DA/da_intro.htm .