.. index:: pair: page; SoftMax .. _doxid-dev_guide_op_softmax: SoftMax ======= General ~~~~~~~ SoftMax operation applies the following formula on every element of :math:`\src` tensor (the variable names follow the standard :ref:`Naming Conventions `): .. math:: dst_i = \frac{exp(src_i)}{\sum_{j=1}^{C} exp(src_j)} where :math:`C` is a size of tensor along axis dimension. Operation attributes ~~~~~~~~~~~~~~~~~~~~ ================================================================================================================= ========================================================== =========== ======================================== ===================== Attribute Name Description Value Type Supported Values Required or Optional ================================================================================================================= ========================================================== =========== ======================================== ===================== :ref:`axis ` Represents the axis from which the SoftMax is calculated. s64 Arbitrary s64 value ( ``1`` in 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 ====== ============== ===================== Outputs ------- ====== ============== ===================== Index Argument Name Required or Optional ====== ============== ===================== 0 ``dst`` Required ====== ============== ===================== Supported data types ~~~~~~~~~~~~~~~~~~~~ SoftMax operation supports the following data type combinations. ===== ===== Src Dst ===== ===== f32 f32 bf16 bf16 f16 f16 ===== =====