Version 1.0: October 1994
=========================
Note: previous releases were unnumbered. This release differs only from
previous versions in correcting a few minor bugs, and in providing for
unsigned characters.


This directory contains the tagger developed in December 1992 - May 1993 by
David Elworthy for the Acquilex project. The main documentation is in
tagger.tex. The files are:

*.c, *.h	source files; see tagger.tex
Make		script to generate makefile; see tagger.tex
1Notes, Error1, Errors, Notes, Punct
		working notes
*.map		tag mapping files for various tagsets
bt		copy of the tagger release to BT.
*.tex,*.ps	documentation and papers on tagging
plot		various output files, plus commands for generating the figures
		for the practical experience paper
pBiT.bib	bibliography for the practical experience paper
corpora		some edited corpora (versions of SEC).

Version 1.1: November 30 1994
=============================
Minor bug fixes with numerical stabilisation and unknown words.
Integrated diffs from CCL.
Documentation changed: command line options and program description
removed from the "Practical experience paper", and made into a separate
file (tagger.tex).

Version 1.2: January 27 1995
============================
Good-Turing correction.
Simple handler for unknown words. Sample rules in ukw.rules.
Superfluous directories bt and corpora removed
Hard-copy documentation of changes only (we seem to have lost the
machine-readable version).

Version 1.3: July 1996
======================
by Larry Piano
More complex option for unknown word handling, keying off prefix and suffix
info extracted from lexicon.
Documentation in version1.3.tex

Version 1.4: September 1997
===========================
by John Carroll
Fixed problems on Sparc architecture. New Make_cc script for using cc
rather that gcc (useful for getting debug version for HP PA architecture).
Reorganised documentation into directory doc/ with subdirectories manual/,
notes/, and papers/.
