I was taking Stanford's cs231n class and was unable to understand the gradient calculated using the SVM loss function.
You should go here to check the notes which I am talking about.
And now we want to find it's gradients. With respect to the weights of the correct class, the gradient of the loss function will be, Until Now I understand Everything, the problem occurs in finding the gradient with respect to the incorrect classes :
I do not understand the calculation of this gradient, where did the Sigma go?