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. Required.

  • Type: T

Outputs

• 1: Result of Sigmoid function applied to the input tensor x. Required.

  • Type: T

Types:

• T: f32, f16, bf16.

• Note: Inputs and outputs have the same data type denoted by T. For example, if input is f32 tensor, then all other tensors have f32 data type.

Mathematical Formulation

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

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