@inproceedings{chang2008partitioned,
  title={Partitioned logistic regression for spam filtering},
  author={Chang, Ming-wei and Yih, Wen-tau and Meek, Christopher},
  booktitle={Proceedings of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining},
  pages={97--105},
  year={2008},
  organization={ACM}
}