[R] lambda, uncertainty coefficient (& Somers D)
Marc Schwartz (via MN)
mschwartz at mn.rr.com
Tue Apr 18 17:53:34 CEST 2006
On Tue, 2006-04-18 at 10:30 -0500, Marc Schwartz (via MN) wrote:
> On Tue, 2006-04-18 at 16:40 +0300, Antti Arppe wrote:
> > Dear colleagues in R,
> >
> > Has anybody implemented the
> >
> > 1) (Goodman & Kruskal) lambda
> >
> > or the
> >
> > 2) (Thiel's) uncertainty coefficient
> >
> > statistics (in the asymmetric and symmetric forms), or is anyone aware
> > that they might reside in some package? A search in the R archives
> > does indicate that they are (somehow) part of the CoCo package, but I
> > would rather not start learning how to transform my data into
> > CoCo-format in order to access these functions, regardless of whether
> > the CoCo versions are actually intended for calculating the actual
> > statistic or for some other package internal purposes, as may
> > sometimes be the case.
> >
> > Furthermore, it appears to me that the 'somers2' function in the Hmisc
> > package applies Somers' D only to 2x2 and not larger tables. Am I
> > mistaken, or does there exist somewhere else an implementation of the
> > Somers' D statistic for the more general RxC tables? This was queried
> > in 1999, but no response seemed then to be forthcoming.
> >
> > Thanks and regards,
> >
> > -Antti Arppe
>
>
> Antti,
>
> Under a separate e-mail to you, I have sent a text file containing R
> code for the above and other related association measures.
>
> If anyone else is interested in these, please let me know and I will be
> more than happy to forward them on. I did not want to consume a lot of
> bandwidth here.
>
> HTH,
>
> Marc Schwartz
[Replying to r-help only]
Antti,
Each of my e-mails directly to you, including the code file, using
either:
antti.arppe at helsinki.fi (located on your web page)
or
arppe at ling.helsinki.fi (used here)
have bounced, with access denied/user unknown errors.
Can you please confirm a correct e-mail address?
Thanks,
Marc
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