A hybrid approach to align sentences and words in English-Hindi parallel corpora

  • Authors:
  • Niraj Aswani;Robert Gaizauskas

  • Affiliations:
  • University of Sheffield, Sheffield, UK;University of Sheffield, Sheffield, UK

  • Venue:
  • ParaText '05 Proceedings of the ACL Workshop on Building and Using Parallel Texts
  • Year:
  • 2005

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Abstract

In this paper we describe an alignment system that aligns English-Hindi texts at the sentence and word level in parallel corpora. We describe a simple sentence length approach to sentence alignment and a hybrid, multi-feature approach to perform word alignment. We use regression techniques in order to learn parameters which characterise the relationship between the lengths of two sentences in parallel text. We use a multi-feature approach with dictionary lookup as a primary technique and other methods such as local word grouping, transliteration similarity (edit-distance) and a nearest aligned neighbours approach to deal with many-to-many word alignment. Our experiments are based on the EMILLE (Enabling Minority Language Engineering) corpus. We obtained 99.09% accuracy for many-to-many sentence alignment and 77% precision and 67.79% recall for many-to-many word alignment.