Regularizing Class Wise Predictions via Self Knowledge Distillation
Deep neural networks with millions of parameters may suffer from poor generalization due to overfitting. To mitigate the issue, we propose a new regularization method that penalizes the predictive distribution between similar samples. In particular, we distill the predictive distribution between different samples of the same label during training. This results in regularizing the dark knowledge (i.e. the knowledge on wrong predictions) of a single network (i.e. a self knowledge distillation) by forcing it to produce more meaningful and consistent predictions in a class wise manner. Consequently, it mitigates overconfident predictions and reduces intra class variations. Our experimental results on various image classification tasks demonstrate that the simple yet powerful method can significantly improve not only the generalization ability but also the calibration performance of modern convolutional neural networks.
2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)