FITE-TRT: a high quality translation technique for OOV words

Authors:
Ari Pirkola;Jarmo Toivonen;Heikki Keskustalo;Kalervo Järvelin
Affiliations:
University of Tampere, Finland;Tampere University of Technology, Tampere, Finland;University of Tampere, Finland;University of Tampere, Finland
Venue:
Proceedings of the 2006 ACM symposium on Applied computing
Year:
2006

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Abstract

We devised a novel statistical technique for the identification of the translation equivalents of source words obtained by transformation rule based translation (TRT). The effectiveness of the devised FITE (frequency-based identification of translation equivalents) technique was tested using biological and medical cross-lingual spelling variants and OOV words in Spanish-English and Finnish-English TRT. For Spanish-English, translation recall was 89.2%-91.0% and for Finnish-English 71.9%-72.9%. For both language pairs FITE-TRT achieved high translation precision, i.e., 97.0%-98.8%. The technique also reliably identified native source language words, i.e., source words that cannot be correctly translated by TRT. Dictionary-based CLIR augmented with FITE-TRT performed substantially better than dictionary-based CLIR where OOV keys were kept intact.