@InProceedings{nakov-EtAl:2013:RANLP-2013,
  author    = {Nakov, Preslav  and  Al Obaidli, Fahad  and  Guzman, Francisco  and  Vogel, Stephan},
  title     = {Parameter Optimization for Statistical Machine Translation: It Pays to Learn from Hard Examples},
  booktitle = {Proceedings of the International Conference Recent Advances in Natural Language Processing RANLP 2013},
  month     = {September},
  year      = {2013},
  address   = {Hissar, Bulgaria},
  publisher = {INCOMA Ltd. Shoumen, BULGARIA},
  pages     = {504--510},
  url       = {http://www.aclweb.org/anthology/R13-1066}
}