Non-Projective Parsing for Statistical Machine Translation Xavier Carreras author Michael Collins 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 carreras-collins-2009-non https://aclanthology.org/D09-1021/ 2009-08 200 209