:nosearch:

.. _op_ai_onnx_Selu-1:

Selu - version 1
================

This page documents version **1** of operator **Selu**. See :doc:`Selu` for the latest version (since version 22).

- **Domain**: ``ai.onnx``
- **Since version**: 1

Selu takes one input data (Tensor ) and produces one output data
(Tensor ) where the scaled exponential linear unit function,
``y = gamma * (alpha * e^x - alpha) for x   0``,
is applied to the tensor elementwise.

**Inputs**

- **X** (*T*): Input tensor

**Outputs**

- **Y** (*T*): Output tensor

**Attributes**

- **alpha** (*float*): Coefficient of SELU default to 1.6732.
- **gamma** (*float*): Coefficient of SELU default to 1.0507.

**Type Constraints**

- **T**: Constrain input and output types to float tensors.
  Allowed types: tensor(double), tensor(float), tensor(float16).