Word Alignment without NULL Words Philip Schulz author Wilker Aziz author Khalil Sima’an author 2016-08 text Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Katrin Erk editor Noah A Smith editor Association for Computational Linguistics Berlin, Germany conference publication schulz-etal-2016-word 10.18653/v1/P16-2028 https://aclanthology.org/P16-2028/ 2016-08 169 174