Sigmoid is one of the possible activation functions. The purpose of an activation function is to squeeze all possible values of whatever ... ... <看更多>

Why is the de-facto standard sigmoid function, 11+e−x, so popular in (non-deep) neural-networks and logistic regression? Why don't we use many of the other ... ... <看更多>

The sigmoid function is a continuous, monotonically increasing function with a characteristic 'S'-like curve, and possesses several interesting properties ... ... <看更多>

Compute sigmoid function. % You need to return the following variables correctly. g = zeros(size(z));. % Instructions: z can be a matrix, vector or scalar. ... <看更多>