Re: [R] logistic discrimination: which chance performance??

2006-08-11 Thread Frank E Harrell Jr
; Classification for Use in Discriminant Analysis: Ecological Applications, > American Midland Naturalist, 111(1),1-7. > > > - Original Message - > From: "Bruno L. Giordano" <[EMAIL PROTECTED]> > To: > Sent: Thursday, August 10, 2006 6:18 PM > Su

Re: [R] logistic discrimination: which chance performance??

2006-08-10 Thread Bruno L. Giordano
111(1),1-7. - Original Message - From: "Bruno L. Giordano" <[EMAIL PROTECTED]> To: Sent: Thursday, August 10, 2006 6:18 PM Subject: [R] logistic discrimination: which chance performance?? > Hello, > I am using logistic discriminant analysis to check whether a kn

[R] logistic discrimination: which chance performance??

2006-08-10 Thread Bruno L. Giordano
Hello, I am using logistic discriminant analysis to check whether a known classification Yobs can be predicted by few continuous variables X. What I do is to predict class probabilities with multinom() in nnet(), obtaining a predicted classification Ypred and then compute the percentage P(obs)