HSSA tree structures for BTG-based preordering in machine translation Yujia Zhang author Hao Wang author Yves Lepage author 2016-10 text Proceedings of the 30th Pacific Asia Conference on Language, Information and Computation: Oral Papers Seoul, South Korea conference publication zhang-etal-2016-hssa https://aclanthology.org/Y16-2010/ 2016-10 123 132