CNN: Sigmoid vs Softmax

Following up a previous post: http://blog.yorkiesgo.com/posts/activation_function/

Softmax

Output class probabilities between 0 and 1, the sum of all class probabilities equals to 1.

Sigmoid

Output class probabilities between 0 and 1, but the sum does not necessarilly equal to 1. This output layer is suitable for multi-class associated classifications.