50 lines
915 B
Markdown
50 lines
915 B
Markdown
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## Sign <a name="Sign"></a>
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**Versioned name**: *Sign-1*
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**Category**: Arithmetic unary operation
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**Short description**: *Sign* performs element-wise sign operation with given tensor.
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**Attributes**:
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No attributes available.
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**Inputs**
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* **1**: An tensor of type T. **Required.**
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**Outputs**
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* **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).
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**Types**
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* *T*: any numeric type.
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*Sign* does the following with the input tensor *a*:
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\f[
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a_{i} = sign(a_{i})
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\f]
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**Examples**
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*Example 1*
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```xml
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<layer ... type="Sign">
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<input>
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<port id="0">
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<dim>256</dim>
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<dim>56</dim>
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</port>
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</input>
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<output>
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<port id="1">
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<dim>256</dim>
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<dim>56</dim>
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</port>
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</output>
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</layer>
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```
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