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OPUS - a collection of parallel corpora and tools

Structure of the repository

  • corpus: corpus data corpus build scripts/makefiles
  • doc: (rudimentary) documentation
  • eflomal: recipes for creating eflomal priors
  • incoming: notes about incoming data sets
  • templates: template recipes for importing additional data sets
  • tools: some additional scripts and tools (mostly obsolete)

Submodules and generated files

  • releases: released data files (submodule OPUS)
  • public_html: websites and data sample files (submodule OPUS-website)
  • admin: administration stuff (non-public git repository OPUS-admin)
  • cwb: Corpus Workbench index files and registers (generated)

Pre-requisites

  • python packages: opustools, polyglot, fast-mosestokenizer
  • Perl modules: OpusTools, Uplug and dependencies
  • subalign (for subtitle conversion and alignment)
  • pdftotext, recode, tidy, pigz, GNU parallel and other common GNU/Unix tools
  • Moses and eflomal (optional for word alignment and phrase table extraction)
  • the corpus work bench (CWB) and cwb Perl modules (optional for cwb index generation)
  • optional: yasa (our fork from https://github.com/Helsinki-NLP/yasa)

Installation and setup

git clone [email protected]:Helsinki-NLP/OPUS-ingest.git
cd OPUS-ingest
git submodule update --init --recursive --remote
make install

The last step will most likely fail. Check error messages and the Makefile for details.

Documentation

NOTE: The documentation belowe requires serious updates!

TODO

  • make build scripts more readable
  • consistent language codes
  • get rid of hard-coded paths to tools and make the repo more general and less depending on specific environments (like the one on puhti/CSC)
  • better documentation (as always)
  • more efficient pre-processing
  • consistent pre-processing (UD-based?)
  • more frequent corpus updates (Tatoeba, wikimedia and other frequently changing corpora)
  • streamline corpus creation, processing and maintenance procedures
  • improve integration/updates of OPUS-API and website updates

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