Extraction of domain-specific bilingual lexicon from comparable corpora: compositional translation and ranking

Estelle Delpech (1) , Béatrice Daille (1) , Emmanuel Morin (1) , Claire Lemaire (2, 3)

1 LINA - Laboratoire d'Informatique de Nantes Atlantique
2 Lingua et Machina
3 Université Stendhal - Grenoble 3 - UFR des Sciences du langage

This paper proposes a method for extracting translations of morphologically constructed terms from comparable corpora. The method is based on compositional translation and exploits translation equivalences at the morpheme-level, which allows for the generation of "fertile" translations (translation pairs in which the target term has more words than the source term). Ranking methods relying on corpus-based and translation-based features are used to select the best candidate translation. We obtain an average precision of 91% on the Top1 candidate translation. The method was tested on two language pairs (English-French and English-German) and with a small specialized comparable corpora (400k words per language).

Mots clés: computer-aided translation; machine translation; comparable corpora; learning-to-rank; compositionality; terminology

Domaines: Informatique et langage [cs.CL]

Estelle Delpech, Béatrice Daille, Emmanuel Morin, Claire Lemaire. Extraction of domain-specific bilingual lexicon from comparable corpora: compositional translation and ranking. COLING 2012, Dec 2012, Mumbai, India. pp.745-762. ⟨hal-00743807v2⟩