Language Engineering in Grammatical Framework (GF)
Licentiate thesis, 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
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 gramletspure 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)
These results contribute to language engineering in GF on two different
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).
natural language processing