@article{luo2019mathcal,
  title={G-Softmax: Improving Intraclass Compactness and Interclass Separability of Features},
  author={Luo, Yan and Wong, Yongkang and Kankanhalli, Mohan and Zhao, Qi},
  journal={IEEE transactions on neural networks and learning systems},
  volume={31},
  number={2},
  pages={685--699},
  year={2019},
  publisher={IEEE}
}