@inproceedings{liu-etal-2013-tuning,
    title = "Tuning {SMT} with a Large Number of Features via Online Feature Grouping",
    author = "Liu, Lemao  and
      Zhao, Tiejun  and
      Watanabe, Taro  and
      Sumita, Eiichiro",
    editor = "Mitkov, Ruslan  and
      Park, Jong C.",
    booktitle = "Proceedings of the Sixth International Joint Conference on Natural Language Processing",
    month = oct,
    year = "2013",
    address = "Nagoya, Japan",
    publisher = "Asian Federation of Natural Language Processing",
    url = "https://preview.aclanthology.org/fix-sig-urls/I13-1032/",
    pages = "279--285"
}