forked from GitHub/gf-core
moving a few things to deprecated
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aarne
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deprecated/index.txt
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211
deprecated/index.txt
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%!postproc(html): "#BECE" "<center>"
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%!postproc(html): "#ENCE" "</center>"
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%!postproc(html): "#BESMALL" "<font size=-1>"
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%!postproc(html): "#ENSMALL" "</font>"
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%!postproc(html): "#BELARGE" "<font size=+2>"
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%!postproc(html): "#ENLARGE" "</font>"
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#BECE
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[doc/gf-logo.png]
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=Grammatical Framework=
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Version 3.0
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June 2008
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#BELARGE
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``[`` [Demos demos/index.html]
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``|`` [Download download/index.html]
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``|`` [Libraries lib/resource/doc/synopsis.html]
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``|`` [Reference doc/gf-refman.html]
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``|`` [Tutorial doc/gf-tutorial.html]
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``]``
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#ENLARGE
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``[`` [Demos demos/index.html]
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``|`` [Download download/index.html]
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``|`` [Developers doc/gf-developers.html]
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% ``|`` [Events doc/events.html]
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``|`` [Libraries lib/resource/doc/synopsis.html]
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``|`` [People doc/gf-people.html]
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% ``|`` [Projects doc/projects.html]
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``|`` [Publications doc/gf-bibliography.html]
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``|`` [QuickRefCard doc/gf-reference.html]
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``|`` [Reference doc/gf-refman.html]
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``|`` [Tutorial doc/gf-tutorial.html]
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``]``
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#ENCE
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#BESMALL
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==News==
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20 April 2009:
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On-line course "GF for Resource Grammar Writers" starting today at 15.30. See the
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[Summer School Google Group http://groups.google.com/group/gf-resource-school-2009]
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for instructions how to start.
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3 April 2009:
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Two demos and one talk on GF at [EACL http://www.eacl2009.gr/conference/] in Athens.
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20 February 2009:
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[GF Resource Grammar Summer School doc/gf-summerschool.html]
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in Gothenburg, 17-28 August 2009.
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4 November 2008:
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GHC 6.10 released, but it doesn't work with GF sources yet.
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If compiling GF from source, use e.g.
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[GHC 6.8.3 http://haskell.org/ghc/download_ghc_683.html].
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15 August 2008:
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[Numeral translator for the iPhone demos/index-numbers.html]
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27 June 2008:
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[release of GF 3.0 doc/gf3-release.html] and this new web page; the old web page is
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[here ../GF2/index.html].
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#ENSMALL
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==What is GF==
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GF, Grammatical Framework, is a programming language for
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**multilingual grammar applications**. It is
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- a **special-purpose language for grammars**, like YACC, Bison, Happy, BNFC,
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but not restricted to programming languages
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- a **functional language**, like Haskell, Lisp, OCaml, Scheme, SML,
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but specialized to grammar writing
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- a **natural language processing framework**, like LKB, XLE, Regulus,
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but based on functional programming and type theory
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- a **categorial grammar formalism**, like ACG, CCG,
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but different and equipped with different tools
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- a **logical framework**, like Agda, Coq, Isabelle,
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but equipped with concrete syntax in addition to logic
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Don't worry if you don't know most of the references above - but if you do know at
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least one, it may help you to get a first idea of what GF is.
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==Applications==
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GF can be used for building
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- [text translators lib/resource/doc/resdemo.html]
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- [speech translators http://www.cs.chalmers.se/~bringert/gf/translatespeech.html]
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- [natural-language interfaces http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html]
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- [multilingual web pages http://www.restauranggajden.se/tomas/]
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- [multilingual authoring systems http://www.cs.chalmers.se/~markus/gramlets/letter-applet.html]
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- [dialogue systems http://www.cs.chalmers.se/~bringert/xv/pizza/]
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- [language training systems http://csmisc14.cs.chalmers.se/~bjorn/langtrain.cgi]
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- [natural language resources lib/resource/doc/synopsis.html]
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==Availability==
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GF is **open-source**, licensed under [GPL LICENSE] (the program) and
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[LGPL lib/LICENSE] (the libraries). It
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is available for
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- Linux
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- Mac OS X
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- Windows
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- via compilation to JavaScript, almost any platform that has a web browser
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==Projects==
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GF was first created in 1998 at
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[Xerox Research Centre Europe http://www.xrce.xerox.com/],
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Grenoble, in the project
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Multilingual Document Authoring. At Xerox, it was used for prototypes including
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a restaurant phrase book,
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a database query system,
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a formalization of an alarm system instructions with translations to 5 languages, and
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an authoring system for medical drug descriptions.
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Later projects using GF and involving third parties include, in chronological order,
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- [GF-Alfa http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html]:
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natural language interface to formal proofs
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- [Efficient http://efficient.citi.tudor.lu/index_noframe.html]:
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authoring tool for business models.
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- [GF-KeY http://www.key-project.org/]:
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authoring and translation of software specifications
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- [TALK http://www.talk-project.org]:
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multilingual and multimodal spoken dialogue systems
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- [WebALT http://webalt.math.helsinki.fi/]:
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multilingual generation of mathematical exercises (commercial project)
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- [SALDO http://spraakbanken.gu.se/sal/]:
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Swedish morphological dictionary based on rules developed for GF and
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[Functional Morphology http://www.cs.chalmers.se/~markus/FM/]
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Academically, GF has been used in four PhD theses and resulted in around
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fifty scientific publications (see [GF publication list doc/gf-bibliography.html]).
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==Programming in GF==
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GF is easy to learn by following the [tutorial doc/gf-tutorial.html].
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You can write your first translator in 15 minutes.
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GF has an interactive command interpreter, as well as a batch compiler.
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Grammars can be compiled to parser and translator code in many different
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formats. These components can then be embedded in applications written
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in other programming languages. The formats currently supported are:
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- Haskell
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- Java
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- JavaScript
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- Prolog
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- Speech recognition: HTK/ATK, Nuance, JSGF
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The GF programming language is high-level and advanced, featuring
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- static type checking
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- higher-order functions
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- dependent types
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- pattern matching with data constructors and regular expressions
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- module system with multiple inheritance and parametrized modules
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==Libraries==
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Libraries are at the heart of modern software engineering. In natural language
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applications, libraries are a way to cope with thousands of details involved in
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syntax, lexicon, and inflection. The
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[GF resource grammar library lib/resource/doc/synopsis.html] has
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support for an increasing number of languages, currently including
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+ Arabic (partial)
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+ Bulgarian
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+ Catalan (partial)
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+ Danish
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+ English
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+ Finnish
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+ French
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+ German
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+ Hindi/Urdu (fragments)
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+ [Interlingua http://www.interlingua.com/]
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+ Italian
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+ Norwegian bokm<6B>l
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+ Russian
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+ Spanish
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+ Swedish
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+ Thai (fragments)
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Adding a language to the resource library takes 3 to 9
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months - contributions
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are welcome!
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% [doc/10lang-small.png]
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