/ Dear All
// Is there a SIMCA (Soft Independent Modelling Class Analogy) implementation
// on R or does anyone know if is it possible to replicate the SIMCA
/algorithm
/ using existing R functions?
//
// Thanks
// Mike White
//
/
I haven't seen any implementation in R, but check out the
I have used PCA for data classification by visual examination of the 3D
scatter plot of the first 3 principal components. I now want to use the
results to predict the class for new data. I have used predict.princomp to
predict the scores and then visualise the results on a 3D scatter plot using
Mike -
For predicting class membership, I would use either lda() or
qda() from the MASS package. See the Venables and Ripley
book for detailed description of the methods. You'll have
to rely on your own references for what the 'SIMCA' algorithm
actually does. I've never heard of it. Sounds
)
SIMCA at a premium price.
Best,
Andy
-Original Message-
From: Thomas W Blackwell [mailto:[EMAIL PROTECTED]
Sent: Wednesday, October 15, 2003 10:53 AM
To: Mike White
Cc: [EMAIL PROTECTED]
Subject: Re: Fw: [R] SIMCA algorithm implementation
Mike -
For predicting class
