sigpy.prox.LInfProj

class sigpy.prox.LInfProj(shape, epsilon, bias=None, axes=None)

Proximal operator for l-infinity ball projection.

\[\min_x \frac{1}{2} \| x - y \|_2^2 + 1\{\| x \|_\infty < \epsilon\}\]

Parameters:

• shape (tuple of ints) – Input shape.
• epsilon (float) – Regularization parameter.
• y (scalar or array) – Bias term.

__init__(shape, epsilon, bias=None, axes=None)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(shape, epsilon[, bias, axes])

Initialize self.