User:Francis Tyers/Apertium 4

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Wish list for Apertium 4:

Software engineering

  • Make the different parts of the engine code more coherent in terms of modules
  • Better test coverage and testing of existing (particularly newer) modules

Linguistic data

  • Extract multiwords from lexicons into "separable" FSTs
  • Train taggers for all languages using available corpora and a TLM
  • At least one state-of-the-art language pair (wrt. Google).


  • Better support for Unicode in lttoolbox.
  • Use embeddings for morphological disambiguation and lexical selection
  • Pass the surface form until transfer (to allow modules to look up surface form embeddings)
  • Retire the HMM tagger
  • Be able to train weights for morph analysis + morph. disambiguation + lexical selection + transfer end to end.
    • e.g. can we treat the modules of the pipeline as a neural net and train the weights for them via backprop?
  • Fully functional recursive transfer
  • Per session state.
Neural system
  • apertium-neural: There should be a basic NMT implementation that functions in the Apertium ecosystem (C++,autotools,bash,apy,html-tools) for communities that want to build their own NMT systems and still take advantage of our ecosystem. We should be a one-stop shop for MT for marginalised langs.

End user

  • Format handling
  • user-based chunking: Better treatment of "no-translate"
  • User dictionaries
  • Better handling of code-switching/mixed texts and informal text.