@InProceedings{arora-nyberg-rose:2009:ALNLP,
  author    = {Arora, Shilpa  and  Nyberg, Eric  and  Ros\'{e}, Carolyn P.},
  title     = {Estimating Annotation Cost for Active Learning in a Multi-Annotator Environment},
  booktitle = {Proceedings of the NAACL HLT 2009 Workshop on Active Learning for Natural Language Processing},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {18--26},
  url       = {http://www.aclweb.org/anthology/W09-1903}
}