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Language Engineering in Grammatical Framework (GF)

Janna Khegai (Institutionen för datavetenskap, Språkteknologi)
Göteborg : Chalmers University of Technology, 2004.

This thesis describes a number of practical experiments rather than theoretical investigations in the area of natural language processing. The basis for the work presented is Grammatical Framework (GF). It is a very complex system, which comprises among other things a grammar formalism based on type theory and its implementation written in Haskell. GF is intended for high-quality machine translation (of INTERLINGUA type) in the restricted language domains. The primary concern of this thesis is however limited to the usage of GF as a piece of software. The main results are: • Implementing a syntax editor, which provides a graphical user interface (GUI) for the command-line GF core. • Writing a part of code for automatic generation of gramlets—pure Java programs with limited (compared to GF) functionality that can be run on PDA (Portable Device Assistants) and as applets in a browser. • Writing the Russian resource grammar that takes care of the most basic morphological and syntactic rules and serves as a standard library for building application grammars (describing restricted language domains) in Russian. These results contribute to language engineering in GF on two different levels: • Author level (end-user) — constructing sentences in natural languages. • Grammarian level — building a grammar description, which is later used on the author level. The last part of the thesis deals with a non-linguistic domain. In that experiment we try to apply functional parsing technique to the well-known problem of protein secondary structure prediction (bioinformatics).

Nyckelord: multilingual authoring, natural language processing, machine translation,syntax editing

Denna post skapades 2006-09-28.
CPL Pubid: 2362


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Institutioner (Chalmers)

Institutionen för datavetenskap, Språkteknologi (2002-2004)


Information Technology

Chalmers infrastruktur


Datum: 2004-02-05