@inproceedings{deng2020labels,
    author={Deng, Weijian and Zheng, Liang},
    title     = {Are Labels Always Necessary for Classifier Accuracy Evaluation?},
    booktitle = {Proc. CVPR},
    year      = {2021},
    }

    @article{deng2021labels,
      title={Are Labels Always Necessary for Classifier Accuracy Evaluation},
      author={Deng, Weijian and Zheng, Liang},
      journal={IEEE Transactions on Pattern Analysis \& Machine Intelligence},
      year={2021},
]    }