[Rd] Announce: exact Distributions

Torsten Hothorn Torsten.Hothorn@rzmail.uni-erlangen.de
Sun, 18 Jun 2000 12:09:45 +0200 (CEST)


I just uploaded the package exactDistr to the CRAN devel section (Fritz will
add it tomorrow, I think). ExactDistr implements the
Streitberg/Roehmel shift-algorithm for the exact distributions of
permutation- and rank tests. This is done in R (just a few lines of code)
and is IMO fast enough for m,n < 50. I added the  usual [dpq]perm
functions and an example how to track the exact distribution of the
Wilcoxon-Mann-Whitney test (especially with ties).

I would like to ask the experts to have a look at this algorithm, maybe we
can add exact p-values etc. to the rank tests in R without adapting the
network algorithm this way.

The weather is beautiful here, so I will stop hacking right now.
If it is raining somewhere:



|									|
|	Dipl.-Stat. Torsten Hothorn					|
|	Institut fuer Medizininformatik, Biometrie und Epidemiologie	|	
|	Waldstrasse 6, D-91054 Erlangen, Deutschland			|
|	Tel: ++49-9131-85-22707						|
|	Fax: ++49-9131-85-25740						|
|	Email: Torsten.Hothorn@rzmail.uni-erlangen.de			|

r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-devel-request@stat.math.ethz.ch