Official PyTorch implementation for "Logit Perturbation". 1. Requirements Python 3.6+ torch=1.8.0+cu111 torchvision+0.9.0+cu111 2. Experiments on Data Augmentation Code for data augmentation, see lpl-balanced. 3. Experiments on Long-tail Classification Code for the long-tail classification, see lpl-longtail-100 and lpl-longtail-other.