Focal Loss was introduced by Lin et al
Focal Loss was introduced by Lin et al Sopra this case, the activation function does not depend mediante scores of other classes sopra \(C\) more than \(C_1 = C_i\). So the gradient respect onesto the each punteggio \(s_i\) sopra \(s\) will only depend on the loss given by its binary problem. Caffe: Sigmoid Cross-Entropy Loss …
