1. A method for building a translation lexicon from non-parallel corpora by a machine translation system, the method comprising: identifying identically spelled words in a first corpus and a second corpus, the first corpus including words in a first language and the second corpus including words in a second language, wherein the first corpus and the second corpus are non-parallel and are accessed by the machine translation system; generating a seed lexicon by the machine translation system, the seed lexicon including identically spelled words; and expanding the seed lexicon by the machine translation system by identifying possible translations of words in the first and second corpora using one or more clues.
8. The method of claim 1 , wherein said one or more clues includes similar context.