.. SPDX-FileCopyrightText: 2020-2021 Intel Corporation .. .. SPDX-License-Identifier: CC-BY-4.0 --------------- BiasAddBackprop --------------- **Versioned name**: *BiasAddBackprop-1* **Category**: *Arithmetic* **Short description**: Computes the gradients on the "bias" tensor for add bias operator. **Detailed description**: This op accumulates all the values from output_delta into the channel dimension, the axis depends on the layout of input tensor. **Attributes**: * *data_format* * **Description**: *data_format* denotes the data format of the input. * **Range of values**: *NXC* or *NCX* (X means HW for 2D, DHW for 3D) * **Type**: string * **Default value**: *NXC* * **Required**: *no* **Inputs**: * **1**: ``output_delta`` - the gradient tensor with respect to the output. **Required.** * **Type**: T **Outputs**: * **1**: ``bias_delta`` - the gradient tensor with respect to bias. * **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.