In the torchvision models vgg code：https://github.com/pytorch/vision/blob/master/torchvision/models/vgg.py 76
there is not a softmax layer in this code ,but in the original paper the last layer is a softmax layer，why dose it happen？
if I use pretrained vgg model to recognize a picture，do I need to add a softmax layer in the last of the model to get each class’s probability？