lsst.scarlet.lite.parameters.AdaproxParameter Class Reference

Inheritance diagram for lsst.scarlet.lite.parameters.AdaproxParameter:

Public Member Functions
	__init__ (self, np.ndarray x, Callable|float step, Callable|None grad=None, Callable|None prox=None, float b1=0.9, float b2=0.999, float eps=1e-8, float p=0.25, np.ndarray|None m0=None, np.ndarray|None v0=None, np.ndarray|None vhat0=None, str scheme="amsgrad", float prox_e_rel=1e-6)
	update (self, int it, np.ndarray input_grad, *args)
Public Member Functions inherited from lsst.scarlet.lite.parameters.Parameter
	__init__ (self, np.ndarray x, dict[str, np.ndarray] helpers, Callable|float step, Callable|None grad=None, Callable|None prox=None)
float	step (self)
tuple[int,...]	shape (self)
npt.DTypeLike	dtype (self)
Parameter	copy (self)
	resize (self, Box old_box, Box new_box)

Public Attributes
	b1 = _b1
	b2 = b2
	eps = eps
	p = p
	phi_psi = phi_psi[scheme]
	e_rel = prox_e_rel
Public Attributes inherited from lsst.scarlet.lite.parameters.Parameter
	x = x
	helpers = helpers
	grad = grad
	prox = prox

Additional Inherited Members
Protected Attributes inherited from lsst.scarlet.lite.parameters.Parameter
	_step = _step

Detailed Description

Operator updated using te Proximal ADAM algorithm

Uses multiple variants of adaptive quasi-Newton gradient descent
    * Adam (Kingma & Ba 2015)
    * NAdam (Dozat 2016)
    * AMSGrad (Reddi, Kale & Kumar 2018)
    * PAdam (Chen & Gu 2018)
    * AdamX (Phuong & Phong 2019)
    * RAdam (Liu et al. 2019)
See details of the algorithms in the respective papers.

Member Function Documentation

update()

lsst.scarlet.lite.parameters.AdaproxParameter.update	(		self,
		int	it,
		np.ndarray	input_grad,
		*	args )

Update the parameter and meta-parameters using the PGM

See `~Parameter` for more.

Reimplemented from lsst.scarlet.lite.parameters.Parameter.

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The documentation for this class was generated from the following file:

• python/lsst/scarlet/lite/parameters.py