Ideas for Google Summer of Code/Closer integration with HFST

This is a set of subtasks to make it easier for Apertium developers to use the Helsinki Finite-State Toolkit (HFST). HFST is a great toolkit for working with morphological transducers, but it is pretty difficult to install, and also not very well integrated with Apertium / doesn't really follow the Apertium way of doing things. We'd like to make it more closely integrated.

Tasks

• Create a new XML-based format for lexc inspired by lttoolbox (see Development ideas for dictionary format)
• Add a compiler for this format, with support for direction restrictions.
• Fix this bug in hfst-proc tokenisation.
  • the link says it's fixed, is it? (or is it that we want ^al/*al$ ^žaktare/*žaktare$ instead of ^al žaktare/*al žaktare$?)
• Modify the HFST build process to make a "minimal" Apertium-centred install.
• Add lttoolbox as a backend to HFST.
• Make hfst-expand obey flag diacritics.

Coding challenge

• Install Apertium and HFST
• Install a language pair which uses both Apertium and HFST.