`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: numpy.ndarray) → numpy.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: numpy.ndarray) → numpy.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.