A translation system includes translation subsystems by a plurality of translation policies with different translation output tendencies, performs forward translation and reverse translation by a consistent translation policy, and ranks the plurality of translation policies based on a similarity between the reverse translation sentences and the original sentence. As a result, a translation policy that best matches each input object to be translated is selected from the plurality of translation policies for each input sentence and, as a consequence, it is possible to cover a wide range of natures of sentences to be translated.
展开▼
