Sigmoid Function

The Sigmoid Function calculator computes the sigmoid value based on the input value.

INSTRUCTIONS: Enter the following:

• (x) Input Domain (a real number)

Sigmoid Function σ(x): The calculator returns a number between zero and one.

The Math / Science

Sigmoid Function Graph

The formula for the Sigmoid Function is:

    `σ(x) = 1 / (1+e^(-x))`

The sigmoid function creates a flexible S-shaped (Sigmoid curve) with a minimum value approaching zero and a maximum value approaching 1.

The sigmoid function is often used in neural networks (artificial intelligence) to "squish" values into a range between zero and one.

Artificial Intelligence and Machine Learning Calculators

• sigmoid function
• Number of Nodes in a Hidden Layer of a Neural Network
• tanh (hyperbolic tangent)
• ReLU
• Signum
• Matthews Correlation Coefficient