@inproceedings{tomanek-etal-2009-proper,
    title = "On Proper Unit Selection in Active Learning: Co-Selection Effects for Named Entity Recognition",
    author = {Tomanek, Katrin  and
      Laws, Florian  and
      Hahn, Udo  and
      Sch{\"u}tze, Hinrich},
    editor = "Ringger, Eric  and
      Haertel, Robbie  and
      Tomanek, Katrin",
    booktitle = "Proceedings of the {NAACL} {HLT} 2009 Workshop on Active Learning for Natural Language Processing",
    month = jun,
    year = "2009",
    address = "Boulder, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/W09-1902/",
    pages = "9--17"
}