Improved Statistical Machine Translation Using Monolingually-Derived Paraphrases Yuval Marton author Chris Callison-Burch author Philip Resnik author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication marton-etal-2009-improved https://aclanthology.org/D09-1040/ 2009-08 381 390