Using the GF resource grammar library in multilingual grammars: an example

Author: Aarne Ranta <aarne (at) cs.chalmers.se>
Last update: Fri Dec 16 14:30:57 2005



This document describes the contents of the directory GF/examples/mp3.

This directory contains a small example of a dialogue system grammar built by using the GF resource grammar library. Its sole purpose is to demonstrate this usage, i.e.

Thus it is not intended to be (even a part of) a really useful system.

Quick try

To try out the grammar, do for example

    gf mk3.gfcm                                 -- start GF
  
    > gr | l -multi                             -- random generate
  
    > p -tr "which song is played ?" | l -multi -- parse and translate
  
    > gt -tr | l -lang=MP3Swe                   -- generate Swedish "treebank"
  
    > si -tr | p | l -multi                     -- translate speech input
      [say:] I want to play Yesterday

The last command only works if you have installed ATK and compiled GF version 14/12/2005 or later.

Structure

The directory consists of the following grammars:

The main linguistic content is in the functor MP3I and the instances of the Lexicon interface.

The way in which the implementation is divided to a functor and an interface depending on it should work as a model for building resource grammar applications in general.

In order to compile the grammars from source, you must set the environment variable GF_LIB_PATH to point at the root of your GF library, e.g. in the bash shell,

  export GF_LIB_PATH=/usr/local/lib/GF/

Resource library version

The example builds on resource v. 0.6. The reason for not building on a later version is that German is not yet implemented for them. The example will probably be migrated to v. 1.0 soon. The new resource version will fix the bugs in the Finnish implementation.