Sigmoid With only two classes, performs exactly the same operation as Softmax. Logits It refers to the stage before passing the final Sigmoid or Softmax, that is, the Raw Output of the Model. Sigmoid and Softmax receive the Logits to safely perform the operation. Softmax For multi-label available only, where one object can have multiple classes at the same time. 1. Softmax case1. 1d array. step1..