Question about the linearity assumption for Discriminant Analysis

Posted by TomSnider on Jan 04, 2012; 11:57pm
URL: http://spssx-discussion.165.s1.nabble.com/Question-about-the-linearity-assumption-for-Discriminant-Analysis-tp5121318.html

I'd appreciate an clarification of the linearity assumption for discriminant analysis.  I am told that the model requires a linear relationship among the predictor variables within each group.  At the same time, it would seem that we would prefer to reduce redundancy among the predictors -- i.e., have them be unrelated.  I can't seem to reconcile these two demands.  Could someone help?