Improving machine transliteration performance by using multiple transliteration models

  • Authors:

  • Jong-Hoon Oh;Key-Sun Choi;Hitoshi Isahara

  • Affiliations:

  • Computational Linguistics Group, National Institute of Information and Communications Technology (NICT), Kyoto, Japan;Computer Science Division, EECS, KAIST, Daejeon, Republic of Korea;Computational Linguistics Group, National Institute of Information and Communications Technology (NICT), Kyoto, Japan

  • Venue:
  • ICCPOL'06 Proceedings of the 21st international conference on Computer Processing of Oriental Languages: beyond the orient: the research challenges ahead
  • Year:
  • 2006

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Abstract

Machine transliteration has received significant attention as a supporting tool for machine translation and cross-language information retrieval. During the last decade, four kinds of transliteration model have been studied — grapheme-based model, phoneme-based model, hybrid model, and correspondence-based model. These models are classified in terms of the information sources for transliteration or the units to be transliterated — source graphemes, source phonemes, both source graphemes and source phonemes, and the correspondence between source graphemes and phonemes, respectively. Although each transliteration model has shown relatively good performance, one model alone has limitations on handling complex transliteration behaviors. To address the problem, we combined different transliteration models with a “generating transliterations followed by their validation” strategy. The strategy makes it possible to consider complex transliteration behaviors using the strengths of each model and to improve transliteration performance by validating transliterations. Our method makes use of web-based and transliteration model-based validation for transliteration validation. Experiments showed that our method outperforms both the individual transliteration models and previous work.