@article{zhu2015unsupervised,
  title={Unsupervised object class discovery via saliency-guided multiple class learning},
  author={Zhu, Jun-Yan and Wu, Jiajun and Xu, Yan and Chang, Eric and Tu, Zhuowen},
  journal={Pattern Analysis and Machine Intelligence, IEEE Transactions on},
  volume={37},
  number={4},
  pages={862--875},
  year={2015},
  publisher={IEEE}
}