[R] diagonal LDA and QDA

[cindy Guo]

Hi, all,

I am wondering if there is any package doing lda and qda which allows
assuming diagonal covariance matrices. I checked the lda function in MASS,
and it seems it does not support this.

Thanks,

Cindy

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[cindy Guo]

[Martin Maechler]

>>>>> "cG" == cindy Guo <cindy...@gmail.com>
>>>>> on Sat, 1 Aug 2009 13:03:08 -0700 writes:

cG> Hi, all, I am wondering if there is any package doing
cG> lda and qda which allows assuming diagonal covariance
cG> matrices. I checked the lda function in MASS, and it
cG> seems it does not support this.

IIRC, this in several packages,
e.g., function
diagDA() in package 'sfsmisc'.

Regards,
Martin Maechler ETH Zurich

[David Winsemius]

On Aug 1, 2009, at 4:03 PM, cindy Guo wrote:

> Hi, all,
>
> I am wondering if there is any package doing lda and qda which allows
> assuming diagonal covariance matrices. I checked the lda function in
> MASS,
> and it seems it does not support this.
>

Did you try one of the r-search sites? e.g.:

http://search.r-project.org/cgi-bin/namazu.cgi?query=diagonal+discriminant+analysis&max=100&result=normal&sort=score&idxname=functions&idxname=Rhelp08&idxname=views

David Winsemius, MD
Heritage Laboratories
West Hartford, CT