# Sigmoid¶

Versioned name: Sigmoid-1

Category: Activation

Short description: Sigmoid element-wise activation function.

OpenVINO description: This OP is as same as OpenVINO OP

Attributes: operations has no attributes.

Inputs:

• 1: Input tensor x of any floating point type. Required.

Outputs

• 1: Result of Sigmoid function applied to the input tensor x. Floating point tensor with shape and type matching the input tensor. Required.

Mathematical Formulation

For each element from the input tensor calculates corresponding element in the output tensor with the following formula:

$sigmoid( x ) = \frac{1}{1+e^{-x}}$