In Lindsay’s neural network, her team gave their model thousands of images ... whereas other times, the equation includes a sigmoid function applied to the entire sum so that the resulting number lies ...

By replacing the step function with a continuous function, the neural network outputs a real number. Often a 'sigmoid' function—a soft version of the threshold function—is used (Fig.

Fully connected neural network and sigmoid The set of calculations for setting the output to either 0 or 1 shown in the perceptron diagram above is called the neuron’s activation function.