.. index:: pair: page; LeakyReLU .. _doxid-dev_guide_op_leakyrelu: LeakyReLU ========= General ~~~~~~~ LeakyReLU operation is a type of activation function based on ReLU. It has a small slope for negative values with which LeakyReLU can produce small, non-zero, and constant gradients with respect to the negative values. The slope is also called the coefficient of leakage. Unlike :ref:`PReLU `, the coefficient :math:`\alpha` is constant and defined before training. LeakyReLU operation applies following formula on every element of :math:`\src` tensor (the variable names follow the standard :ref:`Naming Conventions `): .. math:: dst = \begin{cases} src & \text{if}\ src \ge 0 \\ \alpha src & \text{if}\ src < 0 \end{cases} Operation attributes ~~~~~~~~~~~~~~~~~~~~ ================================================================================================================== ===================================== =========== ======================================================== ===================== Attribute Name Description Value Type Supported Values Required or Optional ================================================================================================================== ===================================== =========== ======================================================== ===================== :ref:`alpha ` Alpha is the coefficient of leakage. f32 Arbitrary f32 value but usually a small positive value. Required ================================================================================================================== ===================================== =========== ======================================================== ===================== 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 ~~~~~~~~~~~~~~~~~~~~ LeakyReLU operation supports the following data type combinations. ===== ===== Src Dst ===== ===== f32 f32 bf16 bf16 f16 f16 ===== ===== Implementation Notes ~~~~~~~~~~~~~~~~~~~~ LeakyReLU 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.