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Updated from 2020.3 to 2020.4

Co-authored-by: domi2000 <domi2000@users.noreply.github.com>
2020-07-20 17:36:08 +03:00

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## GRN <a name="GRN"></a> {#openvino_docs_ops_normalization_GRN_1}
**Versioned name**: *GRN-1*
**Category**: *Normalization*
**Short description**: *GRN* is the Global Response Normalization with L2 norm (across channels only).
**Detailed description**:
*GRN* computes the L2 norm by channels for input tensor with shape `[N, C, ...]`. *GRN* does the following with the input tensor:
output[i0, i1, ..., iN] = x[i0, i1, ..., iN] / sqrt(sum[j = 0..C-1](x[i0, j, ..., iN]**2) + bias)
**Attributes**:
* *bias*
* **Description**: *bias* is added to the variance.
* **Range of values**: a non-negative floating point value
* **Type**: `float`
* **Default value**: None
* **Required**: *yes*
**Inputs**
* **1**: Input tensor with element of any floating point type and `2 <= rank <=4`. Required.
**Outputs**
* **1**: Output tensor of the same type and shape as the input tensor.
**Example**
```xml
<layer id="5" name="normalization" type="GRN">
<data bias="1e-4"/>
<input>
<port id="0">
<dim>1</dim>
<dim>20</dim>
<dim>224</dim>
<dim>224</dim>
</port>
</input>
<output>
<port id="0" precision="f32">
<dim>1</dim>
<dim>20</dim>
<dim>224</dim>
<dim>224</dim>
</port>
</output>
</layer>
```