Ganesh Ramakrishnan Krishna Prasad Chitrapura Raghu Krishnapuram Pushpak Bhattacharyya A model for handling approximate, noisy or incomplete labeling in text classification. 681-688 2005 conf/icml/2005 ICML http://doi.acm.org/10.1145/1102351.1102437 db/conf/icml/icml2005.html#RamakrishnanCKB05