@inproceedings{McCallumEtAl:98, title = {Employing EM and Pool-Based Active learning for Text Classification}, author = {A. McCallum and K. Nigam}, booktitle = {Proceedings of the International Conference on Machine Learning}, year = {1998}, biburl = {http://www.bibsonomy.org/bibtex/2fbfb7ca3e92332e6566b27bdc70e9090/brefeld}, keywords = {imported } }