ace (Alternating Conditional Expectations) and avas (Additivity and
Variance Stabilization for regression) for selecting regression
transformations.
Written by Thomas Lumley <thomas@biostat.washington.edu>, based on
avas() for S by Rob Tibshirani <tibs@utstat.toronto.edu> and
Friedman & Spector's FORTRAN code for ACE, both from statlib.
[1997/04/23] [1997/06/25] [1997/07/29]
Software (bootstrap, cross-validation, jackknife), data and errata
for the book "An Introduction to the Bootstrap" by B. Efron and R.
Tibshirani, 1993, Chapman and Hall.
Functions for dealing with dates. The most useful of them accepts a
vector of input dates in any of the forms 8/30/53, 30Aug53, 30
August 1953, ..., August 30 53, or any mixture of these.
This package performs an exhaustive search for the best subsets of
a given set of potential regressors, using a branch-and-bound
algorithm, and also performs searches using a number of less
time-consuming techniques. It is designed to replace the "leaps()"
command in S.
Written by Thomas Lumley <thomas@biostat.washington.edu>, based on
the S packages `splines' by Doug Bates <bates@stat.wisc.edu> and
`safe.predict' by John Chambers and Trevor Hastie.
[1997/04/23] [1997/07/29]
Functions for survival analysis. This ``port'' is not complete yet,
because it requires a few changes to the R system itself rather than
the add-on package, but most of the functionality is already
available. The ratetable and cohort expected survival functions
still don't work.