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LSST Data Management Base Package
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Classes | Functions
lsst.scarlet.lite.component Namespace Reference

Classes

class  Component
 
class  FactorizedComponent
 

Functions

 default_fista_parameterization (Component component)
 
 default_adaprox_parameterization (Component component, float|None noise_rms=None)
 

Function Documentation

◆ default_adaprox_parameterization()

lsst.scarlet.lite.component.default_adaprox_parameterization ( Component component,
float | None noise_rms = None )
Initialize a factorized component to use Proximal ADAM
for optimization

Definition at line 353 of file component.py.

353def default_adaprox_parameterization(component: Component, noise_rms: float | None = None):
354 """Initialize a factorized component to use Proximal ADAM
355 for optimization
356 """
357 if noise_rms is None:
358 noise_rms = 1e-16
359 if isinstance(component, FactorizedComponent):
360 component._spectrum = AdaproxParameter(
361 component.spectrum,
362 step=partial(relative_step, factor=1e-2, minimum=noise_rms),
363 )
364 component._morph = AdaproxParameter(
365 component.morph,
366 step=1e-2,
367 )
368 else:
369 raise NotImplementedError(f"Unrecognized component type {component}")

◆ default_fista_parameterization()

lsst.scarlet.lite.component.default_fista_parameterization ( Component component)
Initialize a factorized component to use FISTA PGM for optimization

Definition at line 344 of file component.py.

344def default_fista_parameterization(component: Component):
345 """Initialize a factorized component to use FISTA PGM for optimization"""
346 if isinstance(component, FactorizedComponent):
347 component._spectrum = FistaParameter(component.spectrum, step=0.5)
348 component._morph = FistaParameter(component.morph, step=0.5)
349 else:
350 raise NotImplementedError(f"Unrecognized component type {component}")
351
352