S+RESAMPLE : Copyright (c) 2000-2007 Insightful Corp. All rights reserved.
Version 3.0, for S-PLUS 7.0 (Unix, Linux, Windows) and later.


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S+Resample : An S-PLUS library for resampling
	
S+Resample is an object-oriented toolkit for the use of statistical
resampling techniques, including
    * bootstrap
    * jackknife
    * influence
    * cross-validation
    * bootstrap estimation of prediction errors
    * permutation tests
    * bootstrap tilting -- NEW!

A feature of this code is bootstrap tilting, which generally provides
very accurate (second-order accurate) confidence intervals, with
better finite-sample performance than other bootstrap methods, and require
only 1/17 or 1/37 as many bootstrap replications as other bootstrap
methods (for 95% confidence intervals), e.g. 60 replications instead
of 1000 or 2000.

Please contact
	bootstrap-beta@insightful.com (if you have this as a download)
	support@insightful.com        (if your copy came with S-PLUS)
with problems or suggestions.

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---- Overview

The code falls into five general categories:

(1) General-purpose S-PLUS software, 
    primarily upgrades of existing S-PLUS functions in order to support
    capabilities of bootstrap software.  For example, many functions now
    have an optional "weights" argument.

(2) New versions of `bootstrap' and related code, 
    with added functionality or bug fixes.

(3) New resampling functions, 
    for permutation tests, cross validation, bootstrapping prediction
    errors, parametric and smoothed bootstrapping.

(4) New functions for bootstrap tilting inferences and diagnostics.

(5) New GUI features for Windows users.

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---- Documentation

(1) Installation notes

  * INSTALL.TXT describes how to install the library.

(2) Help files

  Most functions have help files; see in particular:
  * help(resampleOverview) -- an annotated list of functions
  * help(resamp.problems)  -- some known issues and workarounds.

(3) Release notes

  * doc/ReleaseNotes.txt describes new and modified functions
  * doc/ChangeLog.txt notes important changes between different
    versions of the library.

(4) Manual

  * resample.pdf

(5) Tutorial and Technical Reports

  * doc/tutorial.ssc
  * other files in the doc folder

(6) For more information, including relevant technical reports, see
        www.insightful.com/Hesterberg/bootstrap/ 

(7) Other libraries
    Data libraries for use with some statistics texts are found at
        www.insightful.com/Hesterberg/bootstrap/
    These libraries contain more examples on how to use the graphical
    interface.

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---- Acknowledgements

This work was supported by
NIH SBIR 2R44CA67734--02 "Statistical Software for Resampling Methods"
NSF SBIR DMI-0078706 "Bootstrap Tilting Inference and Large Data Sets"
Contributors include:
	Andrea Borning
	Ashley Clipson
	Steve Ellis
	Rachel Epstein
	Chris Fraley
	Tim Hesterberg
	Shan Jin
	Shaun Monaghan
	Charles Roosen
	Jim Schimert
	Robert Thurman
We also appreciate advice received from Brad Efron, Frank Harrell,
David S. Moore, Art Owen, Luigi Salmaso, Terry Therneau, and Rob Tibshirani.