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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 346 of file component.py.

346def default_adaprox_parameterization(component: Component, noise_rms: float | None = None):
347 """Initialize a factorized component to use Proximal ADAM
348 for optimization
349 """
350 if noise_rms is None:
351 noise_rms = 1e-16
352 if isinstance(component, FactorizedComponent):
353 component._spectrum = AdaproxParameter(
354 component.spectrum,
355 step=partial(relative_step, factor=1e-2, minimum=noise_rms),
356 )
357 component._morph = AdaproxParameter(
358 component.morph,
359 step=1e-2,
360 )
361 else:
362 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 337 of file component.py.

337def default_fista_parameterization(component: Component):
338 """Initialize a factorized component to use FISTA PGM for optimization"""
339 if isinstance(component, FactorizedComponent):
340 component._spectrum = FistaParameter(component.spectrum, step=0.5)
341 component._morph = FistaParameter(component.morph, step=0.5)
342 else:
343 raise NotImplementedError(f"Unrecognized component type {component}")
344
345