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# Sigmoid Function

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Equation / Last modified by KurtHeckman on 2019/05/06 11:49
`sigma(x) = `

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vCalc.Sigmoid Function

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4266c7af-ad25-11e8-abb7-bc764e2038f2

The **Sigmoid Function **calculator compute the sigmoid value based on the input value.

**INSTRUCTIONS**: Enter the following:

- (
**x**) This is a real number

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

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#### The Math / Science

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.