.. _elish:

Elish
=====

.. automodule:: activations_plus.ELiSH
   :members: forward, __init__

**Reference Paper**:
`ELiSH Activation Function <https://arxiv.org/abs/1808.00783>`_

**Mathematical Explanation**:

The ELiSH activation function is defined as:

.. math::
    f(x) = \begin{cases}
    x \cdot \frac{e^x - 1}{e^x + 1}, & x \geq 0 \\
    \frac{e^x - 1}{e^x + 1}, & x < 0
    \end{cases}

**Example Usage**:

.. code-block:: python

    import torch
    from activations_plus.elish import ELiSH

    activation = ELiSH()
    x = torch.tensor([-3.0, 0.0, 3.0])
    y = activation(x)
    print("ELiSH Output:", y)