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LSST Data Management Base Package
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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 376 of file component.py.

376def default_adaprox_parameterization(component: Component, noise_rms: float | None = None):
377 """Initialize a factorized component to use Proximal ADAM
378 for optimization
379 """
380 if noise_rms is None:
381 noise_rms = 1e-16
382 if isinstance(component, FactorizedComponent):
383 component._spectrum = AdaproxParameter(
384 component.spectrum,
385 step=partial(relative_step, factor=1e-2, minimum=noise_rms),
386 )
387 component._morph = AdaproxParameter(
388 component.morph,
389 step=1e-2,
390 )
391 else:
392 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 367 of file component.py.

367def default_fista_parameterization(component: Component):
368 """Initialize a factorized component to use FISTA PGM for optimization"""
369 if isinstance(component, FactorizedComponent):
370 component._spectrum = FistaParameter(component.spectrum, step=0.5)
371 component._morph = FistaParameter(component.morph, step=0.5)
372 else:
373 raise NotImplementedError(f"Unrecognized component type {component}")
374
375