@inproceedings{ijcai2013p228,
  title     = {Thinking of Images as What They Are: Compound Matrix Regression for Image Classification},
  author    = {Ma, Zhigang and Yang, Yi and Nie, Feiping and Sebe, Nicu},
  booktitle = {Proceedings of the Twenty-Third International Joint Conference on
               Artificial Intelligence, {IJCAI-13}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Francesca Rossi},
  pages     = {1530--1535},
  year      = {2013},
  month     = {8},
  url       = {https://ijcai.org/proceedings/2013/228},
}