From thomas@biostat.washington.edu  Wed Apr 21 17:20:29 1999
From: thomas@biostat.washington.edu (Thomas Lumley)
Date: Wed, 21 Apr 1999 09:20:29 -0700 (PDT)
Subject: survival5
In-Reply-To: <199904211602.SAA24704@sophie.ethz.ch>
Message-ID: <Pine.GSO.4.10.9904210907360.13904-100000@wompom.biostat.washington.edu>

A nearly complete port of the new survival5 package has been sent to CRAN
and will soon be appearing on a mirror near you in the contrib/devel
area.

This new package, the successor to survival4, has a more stable likelihood
maximiser for parametric survival models and incorporates penalised
likelihoods for adding smoothing splines, ridge regression, and
(approximately) frailties to survival models. User-defined penalties are
also possible.

It is in the devel area for two reasons

(1) There are some tests I want to run against S-PLUS, and we don't have
survival5 installed for S-PLUS yet.

(2) It calls R internal functions to implement the penalised regression.
The API for these has not been standardised yet and you need to install
the package from an R source tree. 


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._


survival5
Thomas Lumley