Tanh

Versioned name: Tanh-1

Category: Arithmetic unary

Short description: Tanh performs element-wise hyperbolic tangent (tanh) operation with given tensor.

Detailed description

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

\[tanh ( x ) = \frac{2}{1+e^{-2x}} - 1 = 2sigmoid(2x) - 1\]

• For integer element type the result is rounded (half up) to the nearest integer value.

Attributes: Tanh operation has no attributes.

Inputs:

• 1: A tensor of type T and arbitrary shape. Required.

Outputs:

• 1: The result of element-wise Tanh operation. A tensor of type T and the same shape as input tensor.

Types

• T: any numeric type.

Examples

Example 1

 <layer ... type="Tanh">
     <input>
         <port id="0">
             <dim>256</dim>
             <dim>56</dim>
         </port>
     </input>
     <output>
         <port id="1">
             <dim>256</dim>
             <dim>56</dim>
         </port>
     </output>
 </layer>