:nosearch:

.. _op_ai_onnx_Mish-18:

Mish - version 18
=================

This page documents version **18** of operator **Mish**. See :doc:`Mish` for the latest version (since version 22).

- **Domain**: ``ai.onnx``
- **Since version**: 18

Mish: A Self Regularized Non-Monotonic Neural Activation Function.

Perform the linear unit element-wise on the input tensor X using formula:

.. code-block::

    mish(x) = x * tanh(softplus(x)) = x * tanh(ln(1 + e^{x}))


**Inputs**

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

**Outputs**

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

**Type Constraints**

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