Page 22 - Computational Statistics Handbook with MATLAB

Chapter 1: Introduction 7

program does not provide insights about the algorithms. For example, with
classification and regression trees, the code can be quite complicated in
places, so the functions are relegated to an appendix (Appendix D). Including
these in the body of the text would distract the reader from the important
concepts being presented.

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ComputationalComputational Computational Computational StatistStatist Statist Statisti iccs ccss sToolboxoolbox
The majority of the algorithms covered in this book are not available in
MATLAB. So, we provide functions that implement most of the procedures
that are given in the text. Note that these functions are a little different from
the MATLAB code provided in the examples. In most cases, the functions
allow the user to implement the algorithms for the general case. A list of the
functions and their purpose is given in Appendix F. We also give a summary
of the appropriate functions at the end of each chapter.
The MATLAB functions for the book are part of what we are calling the
Computational Statistics Toolbox. To make it easier to recognize these func-
tions, we put the letters ‘cs’ in front. The toolbox can be downloaded from

• http://lib.stat.cmu.edu
• http://www.infinityassociates.com

Information on installing the toolbox is given in the readme file and on the
website.

Resourc
Internet Internet InternetInternet ResourcResourc eess s
Resource
es
One of the many strong points about MATLAB is the availability of functions
written by users, most of which are freely available on the internet. With each
chapter, we provide information about internet resources for MATLAB pro-
grams (and other languages) that pertain to the techniques covered in the
chapter.
The following are some internet sources for MATLAB code. Note that these
are not necessarily specific to statistics, but are for all areas of science and
engineering.

• The main website at The MathWorks, Inc. has code written by users
and technicians of the company. The website for user contributed
M-files is:
http://www.mathworks.com/support/ftp/
The website for M-files contributed by The MathWorks, Inc. is:

ftp://ftp.mathworks.com/pub/mathworks/
• Another excellent resource for MATLAB programs is

© 2002 by Chapman & Hall/CRC