An Unsupervised Method for Word Sense Tagging using Parallel Corpora

We present an unsupervised method for word sense disambiguation that exploits translation correspondences in parallel corpora. The technique takes advantage of the fact that cross-language lexicalizations of the same concept tend to be consistent, preserving some core element of its semantics, and yet also variable, reeecting diier-ing translator preferences and the in-uence of context. Working with parallel corpora introduces an extra complication for evaluation, since it is dif-cult to nd a corpus that is both sense tagged and parallel with another language; therefore we use pseudo-translations, created by machine translation systems, in order to make possible the evaluation of the approach against a standard test set. The results demonstrate that word-level translation correspondences are a valuable source of information for sense disam-biguation.