Sign

Versioned name: Sign-1

Category: Arithmetic unary

Short description: Sign performs element-wise sign operation on a given input tensor.

Detailed description: Sign performs element-wise sign operation on a given input tensor, based on the following mathematical formula:

\[a_{i} = sign(a_{i})\]

Attributes: Sign operation has no attributes.

Inputs

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

Outputs

• 1: The result of element-wise Sign operation. A tensor of type T with mapped elements of the input tensor to -1 (if it is negative), 0 (if it is zero), or 1 (if it is positive), nan is returned for nan inputs.

Types

• T: any numeric type.

Example

 <layer ... type="Sign">
     <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>