Estimating Annotation Cost for Active Learning in a Multi-Annotator Environment Shilpa Arora author Eric Nyberg author Carolyn P Rosé author 2009-06 text Proceedings of the NAACL HLT 2009 Workshop on Active Learning for Natural Language Processing Eric Ringger editor Robbie Haertel editor Katrin Tomanek editor Association for Computational Linguistics Boulder, Colorado conference publication arora-etal-2009-estimating https://aclanthology.org/W09-1903/ 2009-06 18 26