Natural Language Processing ftp-sites

NL Software Registry

The Natural Language Software Registry is a catalogue of software implementing core natural language processing techniques, whether available on a commercial or noncommercial basis. Some of the topics listed include speech signal processing, morphological analysis, parsers, and knowledge representation systems.

The catalogue is available from the German Research Institute for Artificial Intelligence (DFKI) in Saarbruecken (Germany) by anonymous ftp to ftp.dfki.uni-sb.de:registry/, email to registry@dfki.uni-sb.de, or physical mail to NL Software Registry, Deutsches Forschungszentrum fuer Kuenstliche Intelligenz, Stuhlsatzenhausweg 3, D-W-6600 Saarbruecken, Germany, or by telephone to +49 (681) 303-5282.

Eliza and Similar Programs

For more information, write to Morgan Kaufmann, Dept. P1, 2929 Campus Drive, Suite 260, San Mateo CA 94403, call 800-745-7323, or fax 415-578-0672. (Mac ISBN 1-55860-227-5; DOS 3.5" ISBN 1-55860-228-3; or DOS 5.25" ISBN 1-55860-229-1).

• The doctor.el is an implementation of Eliza for GNU-Emacs emacs-lisp. Invoke it with "Meta-X doctor".
• Source code for ELIZA in Prolog (implemented by Viren Patel) is available by ftp from aisun1.ai.uga.edu.
• muLISP-87 (a MSDOS Lisp sold by Soft Warehouse) includes a Lisp implementation of Eliza.
• Compute!'s Gazette, June 1984, includes source for a BASIC implementation of Eliza. You can also find it in 101 more computer games, edited by David Ahl, published by Creative Computing (alas, they're defunct, and the book is out of print).
• Herbert Schildt "Artificial Intelligence using C", McGraw-Hill, 1987, ISBN 0-07-881255-0, pp315-338, includes a simple version of DOCTOR.
• ucsd.edu:pub/pc-ai contains implementations of Eliza for the IBM PC.
• The original Parry (in MLISP for a PDP-10) is available in labrea.stanford.edu:/pub/parry.tar.Z.
• RACTER is *not* public domain. It costs $50 for MS-DOS and Macintosh versions, the Inrac compiler is $200 (MS-DOS only), and the Inrac manual alone is $25. Racter is available from John Owens, INRAC Corp./Nickers International Ltd., 12 Schubert Street, Staten Island, NY 10305, Tel: 718-448-6283, or Fax: 718-448-6298. Racter was published in 1984, and written in compiled BASIC. To read some of RACTER's work, see "The Policeman's Beard is Half Constructed", Computer Prose and Poetry by Racter, Warner Books, 1984. ISBN 0-446-38051-2 (paperback). Written by William Chamberlain and Thomas Etter. Some discussion of RACTER appears in A.K. Dewdney's book, "The Armchair Universe". The Macintosh version runs only on SEs and Pluses (it comes on a single-sided 400k copy-protected disk, with an old version of the system).

Natural Language Processing

• YACC -- ftp.cs.cmu.edu:user/ai/lang/lisp/lisp/parse/johnson-yacc.lisp
  Contact: Mark Johnson
  Lisp YACC/Parser.
• BABBLER -- Contact: rsf1@ra.msstate.edu
  Markov chains/NLP
• PENMAN -- Contact: hovy@isi.edu
  Natural Language Generation.
• PC-KIMMO -- msdos.archive.umich.edu:/msdos/linguistics/pckim105.zip
  An implementation of KIMMO morphological analyzer for the IBM PC.
• FUF -- Contact:
  • elhadad@bengus.bgu.ac.il
  • cs.columbia.edu:
  or:
  • ftp:black.bgu.ac.il:/pub/fuf/fuf5.2.tar.Z
  • cs.columbia.edu:pub/fuf/fuf5.2.tar.Z
  
  Natural language generation system based on Functional Unification Grammars. Includes unifier, large grammar of English (surge) user manual and many examples. Written in Common Lisp.
• InterBASE -- Contact: Sergei Kuchin <kuchin@darmstadt.gmd.de>
  ftp: files interbas.exe, interba1.exe, interbas.txt on sics.se:/pub/packet-incoming, ftp.uu.net:/tmp, clr.nmsu.edu:/incoming or debra.dgbt.doc.ca:/pub/incoming
  Natural language database front end
• RegEx -- csd4.csd.uwm.edu:/pub/regex/
  Translates regular expressions to DFAs. Written in C. Mark Hopkins<markh@csd4.csd.uwm.edu>
• Tom -- csd4.csd.uwm.edu:/pub/regex/tomita/
  C implementation of the Tomita parsing algorithm Mark Hopkins<markh@csd4.csd.uwm.edu>
• Common Lisp versions of the miniature natural language understanding programs from "Inside Computer Understanding" by Schank and Riesbeck, 1981, are available by anonymous ftp from cs.umd.edu/pub/schank/icu. This includes the SAM and ELI miniatures. It will eventually include copies of the miniature versions of PAM, POLITICS, and Tale-Spin. The FOR macro is also available in this directory, as are a set of functions for manipulating and matching lisp representations of Conceptual Dependency formulas. Contact Bill Andersen<waander@cs.umd.edu> for more information.
• The Link Parser is a highly efficient English parser written by Danny Sleator and Davy Temperley. It uses a novel grammatical formalism known as Link Grammar to represent a robust and diverse collection of English-language phenomena. The system is available by anonymous ftp from spade.pc.cs.cmu.edu in the directory /usr/sleator/public/. Read the README file for more information.
• The Xerox part-of-speech tagger is available by anonymous ftp from parcftp.xerox.com:pub/tagger/tagger-1-0.tar.Z. It is implemented in Common Lisp and has been tested in Allegro CL 4.1, CMU CL 16e, and Macintosh CL 2.0p2. For more information, contact the authors, Doug Cutting <cutting@parc.xerox.com>, and Jan Pedersen <pedersen@parc.xerox.com$gt.
• The Prolog and DCG programs from Pereira and Shieber's book, "Prolog and Natural Language Analysis", are available by anonymous ftp from das.harvard.edu:pub/shieber/pnla/. See the file README for the conditions under which the material is distributed. If you retrieve the files, please send an email message to the authors letting them know how you plan to use them. For further information, write to Fernando Pereira <pereira@research.att.com> or Stuart Shieber <shieber@das.harvard.edu>.