CMU Artificial Intelligence Repository
Hdrug: Graphical User Environment for NLP in Prolog
areas/nlp/parsing/hdrug/
Hdrug is an environment to develop logic grammars, parsers, and
generators for natural languages. The package comes with a number of
example grammars, including a Categorial Grammar, a Tree Adjoining
Grammar, a Unification Grammar in the spirit of Head-driven Phrase
Structure Grammar, an Extraposition Grammar and a Definite Clause
Grammar. Each of the grammars comes with a set of parsers, such as
Earley-like chart parsers, left-corner parsers and head-driven
parsers. Some grammars come with variants of the head-driven
generator.
The package allows easy comparison of different parsers/generators,
extensive possibilities of compiling feature equations into Prolog
terms, graphical (Tk), LaTeX and ordinary Prolog output of trees,
feature structures and Prolog terms, and plotted graphs and tables of
statistical information.
Example grammars, parsers, and generators include TA (the ALE 2.0 HPSG
grammar, by Bob Carpenter and Gerald Penn), TL (a HPSG grammar
for Dutch), TT (a small Tree Adjoining Grammar), TG (a small DCG for
Dutch), TC (a Constraint-based Categorial Grammar for English), TD (a
minimal DCG), and TX (an extraposition grammar).
See Also:
areas/nlp/parsing/pleuk/
http://tyr.let.rug.nl/~vannoord/prolog-app/Hdrug/
Origin:
tyr.let.rug.nl:/pub/prolog-app/Hdrug/
as the file hdrug?.tar.gz, where ? is the version number.
Version: 2.0 (16-SEP-94)
Requires: Sicstus Prolog, ProTcl 1.1 or higher, Tcl 7.3/Tk 3.6.
Recommend getting TkSteal, BLT library 1.7, LaTeX/Xdvi,
and Treemaker (TeX extension).
Ports: The program has been tested for HP-UX 9000/710 730,
Linux (1.0), and Sun.
Copying: Copyright (c) 1991-1994 Gertjan van Noord and Gosse Bouma,
University of Groningen (RUG)
GNU GPL v2 (see readme.txt for details)
The CBCG package is (c) 1993-1994 Gosse Bouma University
of Groningen
Use, copying, modification, and distribution permitted.
Updated: Thu Oct 13 16:04:21 1994
CD-ROM: Prime Time Freeware for AI, Issue 1-1
Author(s): Gertjan van Noord
Alfa-informatica and BCN
University of Groningen (RUG)
Postbus 716
NL 9700 AS Groningen
Tel: +31 50 635935
Fax: +31 50 634900
URL: http://tyr.let.rug.nl/~vannoord
Keywords:
Authors!van Noord, Feature Structures, Grammar, Hdrug, NLG,
NLP, Parsing, ProTcl, Prolog!Code
References:
Gertjan van Noord and Gosse Bouma, "Adjuncts and the Processing of
Lexical Rules", Coling 94.
Gertjan van Noord, "Head Corner Parsing for TAG", Computational
Intelligence, 1993.
Gertjan van Noord, "An overview of head-driven bottom-up generation",
in Current Research in Natural Language Generation, Robert Dale, Chris
Mellish, and Michael Zock, editors, Academic Press, 1990.
Gosse Bouma and Gertjan van Noord, "Head-driven Parsing for Lexicalist
Grammars: Experimental Results", EACL93, Utrecht, 1993.
Gosse Bouma and Gertjan van Noord, "Constraint-based Categorial Grammar",
ACL 94, 1994.
Fernando C.N. Pereira, "Extraposition Grammars", Computational
Linguistics 7(4), 1981.
Last Web update on Mon Feb 13 10:26:52 1995
AI.Repository@cs.cmu.edu