Module « scipy.special »

Fonction huber - module scipy.special

Signature de la fonction huber

Description

huber.__doc__

huber(x1, x2, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj])

huber(delta, r)

Huber loss function.

.. math:: \text{huber}(\delta, r) = \begin{cases} \infty & \delta < 0  \\ \frac{1}{2}r^2 & 0 \le \delta, | r | \le \delta \\ \delta ( |r| - \frac{1}{2}\delta ) & \text{otherwise} \end{cases}

Parameters
----------
delta : ndarray
    Input array, indicating the quadratic vs. linear loss changepoint.
r : ndarray
    Input array, possibly representing residuals.

Returns
-------
res : ndarray
    The computed Huber loss function values.

Notes
-----
This function is convex in r.

.. versionadded:: 0.15.0