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This will create an installation directory for you whose name will be
C<Algorithm-DecisionTree-3.43>.  Enter this directory and execute the following
commands for a standard install of the module if you have root privileges:

    perl Makefile.PL
    make
    make test
    sudo make install

If you do not have root privileges, you can carry out a non-standard install the
module in any directory of your choice by:

    perl Makefile.PL prefix=/some/other/directory
    make
    make test
    make install

With a non-standard install, you may also have to set your PERL5LIB environment
variable so that this module can find the required other modules. How you do that
would depend on what platform you are working on.  In order to install this module in
a Linux machine on which I use tcsh for the shell, I set the PERL5LIB environment
variable by

    setenv PERL5LIB /some/other/directory/lib64/perl5/:/some/other/directory/share/perl5/

If I used bash, I'd need to declare:

    export PERL5LIB=/some/other/directory/lib64/perl5/:/some/other/directory/share/perl5/

Another option for a non-standard install would be to place at the top of your own
scripts the following invocation:

    BEGIN {
        unshift @INC, "/some/other/directory/blib/lib";
    }    


=head1 THANKS

I wish to thank many users of this module for their feedback.  Many of the
improvements I have made to the module over the years are a result of the feedback
received.

I thank Slaven Rezic for pointing out that the module worked with Perl 5.14.x.  For
Version 2.22, I had set the required version of Perl to 5.18.0 since that's what I
used for testing the module. Slaven's feedback in the form of the Bug report
C<#96547> resulted in Version 2.23 of the module.  Version 2.25 further downshifts
the required version of Perl to 5.10.

On the basis of the report posted by Slaven at C<rt.cpan.org> regarding Version 2.27,
I am removing the Perl version restriction altogether from Version 2.30.  Thanks
Slaven!

Version 3.43 was prompted by a bug report sent by Jan Trukenmüller regarding a
missing backslash in a regex in the C<csv_cleanup_needed()> function.  Thanks, Jan!

=head1 AUTHOR

The author, Avinash Kak, recently finished a 17-year long "Objects Trilogy Project"
with the publication of the book I<Designing with Objects> by John-Wiley. If
interested, visit his web page at Purdue to find out what this project was all
about. You might like I<Designing with Objects> especially if you enjoyed reading
Harry Potter as a kid (or even as an adult, for that matter).

If you send email regarding this module, please place the string "DecisionTree" in
your subject line to get past my spam filter.  Avi Kak's email address is
C<kak@purdue.edu>

=head1 COPYRIGHT

This library is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.

 Copyright 2017 Avinash Kak

=cut