.. index:: pair: page; BiasAdd .. _doxid-dev_guide_op_biasadd: BiasAdd ======= General ~~~~~~~ Add bias to channel dimension of input. This is a special ``Add`` with bias restricted to be 1-D. Broadcasting is supported. .. math:: \dst(n,c,h,w) = \src(n,c,h,w) + \bias(c) Operation attributes ~~~~~~~~~~~~~~~~~~~~ ======================================================================================================================== ============================================================= =========== ============================ ===================== Attribute Name Description Value Type Supported Values Required or Optional ======================================================================================================================== ============================================================= =========== ============================ ===================== :ref:`data_format ` Controls how to interpret the shape of ``src`` and ``dst`` . string ``NCX`` , ``NXC`` (default) Optional ======================================================================================================================== ============================================================= =========== ============================ ===================== Execution arguments ~~~~~~~~~~~~~~~~~~~ The inputs and outputs must be provided according to below index order when constructing an operation. Inputs ------ ====== ============== ===================== Index Argument Name Required or Optional ====== ============== ===================== 0 ``src`` Required 1 ``bias`` Required ====== ============== ===================== .. note:: ``bias`` is a 1D tensor to be added to ``src`` tensor. The size should be the same as size of channel dimension of ``src`` tensor. Outputs ------- ====== ============== ===================== Index Argument Name Required or Optional ====== ============== ===================== 0 ``dst`` Required ====== ============== ===================== Supported data types ~~~~~~~~~~~~~~~~~~~~ BiasAdd operation supports the following data type combinations. ===== ===== ===== Src Bias Dst ===== ===== ===== f32 f32 f32 bf16 bf16 bf16 f16 f16 f16 ===== ===== ===== Implementation Notes ~~~~~~~~~~~~~~~~~~~~ BiasAdd supports in-place operations, meaning that ``src`` can be used as both input and output (``dst``). In case of in-place operation, the original ``src`` data will be overwritten. Use in-place operations whenever possible for performance.