b
   This floppy contains source code to accompany the book

           Information Retrieval: Data Structures and Algorithms
            Edited by William B. Frakes and Ricardo Baeza-Yates

   +Contents

Each of the directories under the root contains C source code
contributed from the authors of one of the Chapters in the book
intended to illustrate the concepts discussed in the Chapter.
Although the code has been thoroughly tested in preparation of
this floppy disk, it is meant to be instructional material only,
and it is not guaranteed to perform as intended by its authors.
No warranty of this software is stated or implied by the authors,
editors, testers, publishers, or suppliers of this code.

The code contained in the sub-directories should be the
following:

   stopper   Code to accompany Chapter 7: Lexical Analysis and
             Stop List
             Contributed by Christopher Fox

   stemmer   Code to accompany Chapter 8: Stemming Algorithms
             Contributed by William B. Frakes

   thesauri  Code to accompany Chapter 9: Thesaurus Construction
             Contributed by Padmini Srinivassan

   bool      Code to accompany Chapter 12: Boolean Operations
             Contributed by Steven Wartik

   mphf      Code to accompany Chapter 13: Hashing Algorithms
             Contributed by Edward Fox and Qi-Fan Chen

Each sub-directory should contain a read.me file introducing the
contents of the sub-directory, a makefile used to build the code,
the source code and headers, and test drivers and test data.

The makefile contains detailed information about how to build and
test the code;  the source code files themselves contain comments
explaining the code and how it implements algorithms and data
structures.

The C code was written for and tested on the UNIX operating
system.  For ease of distribution, it is available on DOS floppy
disks as well as UNIX floppy disks in tar format.  Although the
code has not been tested on DOS, and is being distributed on DOS
floppies mainly to make it more accessible, it should port to DOS
with few problems.

Distributing the code through DOS has required making changes
that compromise file name readability somewhat.  In particular,
filenames are at most eight characters long, and use no upper
case letters.

   +Acknowledgements

This floppy was prepared through the cooperation of many people.
Bill Frakes coordinated the efforts of the contributors and
preparers, and reviewed the work.  Steve Wartik made an initial
pass over the code, improving its portability, correcting bugs,
and improving its readability.  Chris Fox inspected the code for
conformance to standards, ran it through lint, used the nvcc code
coverage analyzer to test the code to 90% branch coverage,
checked its portability on another machine, wrote the read.me
files, and prepared the final version of the floppy.  The
individual code contributors corrected many bugs and rewrote
large portions of the code to improve readability and to make the
coding styles more consistent.