BibTeX

@InProceedings{tomanek-etal:2009:activelearning,
  author = {Tomanek, Katrin and Laws, Florian and Hahn, Udo and Sch{ü}tze,
	Hinrich},
  title = {On Proper Unit Selection in Active Learning: Co-Selection Effects
	for Named Entity Recognition},
  booktitle = {Proceedings of the Workshop on Active Learning for NLP at NAACL 2009},
  year = {2009},
  address = {Boulder, CO},
  month = {June},
  publisher = {Association for Computational Linguistics}
}