@inproceedings{nakov-etal-2013-parameter,
    title = "Parameter Optimization for Statistical Machine Translation: It Pays to Learn from Hard Examples",
    author = "Nakov, Preslav  and
      Al Obaidli, Fahad  and
      Guzm{\'a}n, Francisco  and
      Vogel, Stephan",
    editor = "Mitkov, Ruslan  and
      Angelova, Galia  and
      Bontcheva, Kalina",
    booktitle = "Proceedings of the International Conference Recent Advances in Natural Language Processing {RANLP} 2013",
    month = sep,
    year = "2013",
    address = "Hissar, Bulgaria",
    publisher = "INCOMA Ltd. Shoumen, BULGARIA",
    url = "https://preview.aclanthology.org/fix-sig-urls/R13-1066/",
    pages = "504--510"
}