Sigmoid Function

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Equation / Last modified by KurtHeckman on 2019/06/24 01:31
`sigma(x) = `
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vCalc.Sigmoid Function

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.pngSigmoid 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.