[R] predict.lda posteriors equal to 1

Bill.Venables at csiro.au Bill.Venables at csiro.au
Sun Apr 12 03:48:06 CEST 2009

If you try


You will see there are very many posterior probabilities there, too, which differe from 1 by round-off error at most.  So your data are not unique.

I don't get why you don't get it. 

Bill Venables

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of gcam032
Sent: Sunday, 12 April 2009 11:16 AM
To: r-help at r-project.org
Subject: [R] predict.lda posteriors equal to 1

Hi all,

I was wondering if anyone was able to explain to me why when I run
predict.lda() on some new data I get lots of posterior probabilities = 1. 
This seems markedly unrealistic.  What do the posteriors mean in the context
of the predict.lda() function?


View this message in context: http://www.nabble.com/predict.lda-posteriors-equal-to-1-tp23007165p23007165.html
Sent from the R help mailing list archive at Nabble.com.

R-help at r-project.org mailing list
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

More information about the R-help mailing list