@inproceedings{mehdad-2009-automatic,
    title = "Automatic Cost Estimation for Tree Edit Distance Using Particle Swarm Optimization",
    author = "Mehdad, Yashar",
    editor = "Su, Keh-Yih  and
      Su, Jian  and
      Wiebe, Janyce  and
      Li, Haizhou",
    booktitle = "Proceedings of the {ACL}-{IJCNLP} 2009 Conference Short Papers",
    month = aug,
    year = "2009",
    address = "Suntec, Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/P09-2073/",
    pages = "289--292"
}