@inproceedings{liu-etal-2009-weighted,
    title = "Weighted Alignment Matrices for Statistical Machine Translation",
    author = "Liu, Yang  and
      Xia, Tian  and
      Xiao, Xinyan  and
      Liu, Qun",
    editor = "Koehn, Philipp  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing",
    month = aug,
    year = "2009",
    address = "Singapore",
    publisher = "Association for Computational Linguistics",
    url = "http://aclanthology.org/D09-1106/",
    pages = "1017--1026"
}