@inproceedings{nathanson2007eigentaste,
  title={Eigentaste 5.0: constant-time adaptability in a recommender system using item clustering},
  author={Nathanson, Tavi and Bitton, Ephrat and Goldberg, Ken},
  booktitle={Proceedings of the 2007 ACM conference on Recommender systems},
  pages={149--152},
  year={2007},
  organization={ACM}
}