`sklvq.activations`.Identity

class sklvq.activations.Identity[source]

Identity function

Class that holds the identity function and gradient.

See also

Sigmoid, SoftPlus, Swish

__call__(x: ndarray) → ndarray[source]

Implementation of the identity function:: $f(\mathbf{x}) = \mathbf{x}$

Parameters:

xndarray of any shape

Returns:

xndarray: Elementwise evaluation of the identity function.

gradient(x: ndarray) → ndarray[source]

The identity functions’s gradient:: $\frac{\partial f}{\partial \mathbf{x}} = \mathbf{1}$

Parameters:

xndarray

Returns:

ndarray of shape (x.shape): Elementwise evaluation of the identity function’s gradient.