simpeg.directives.Update_IRLS

class simpeg.directives.Update_IRLS(*args, **kwargs)

Bases: UpdateIRLS

This class has been deprecated, see UpdateIRLS for documentation

Attributes

chifact_start	Target chi factor to start the IRLS process.
chifact_target	Targer chi factor to maintain during the IRLS process.
cooling_factor	Beta is divided by this value every cooling_rate iterations.
cooling_rate	Cool beta after this number of iterations.
dmisfit	Data misfit associated with the directive.
f_min_change	Target chi factor to start the IRLS process.
invProb	Inverse problem associated with the directive.
inversion	Inversion object associated with the directive.
irls_cooling_factor	IRLS threshold parameter (epsilon) is divided by this value every iteration.
max_irls_iterations	Maximum irls iterations.
metrics	Various metrics used by the IRLS algorithm.
misfit_tolerance	Tolerance on deviation from the target chi factor, as a fractional percent.
opt	Optimization algorithm associated with the directive.
percentile	Tolerance on deviation from the target chi factor, as a fractional percent.
reg	Regularization associated with the directive.
simulation	Return simulation for all data misfits.
survey	Return survey for all data misfits
verbose	Whether or not to print debugging information.

Methods

adjust_cooling_schedule()	Adjust the cooling schedule based on the misfit.
endIter()	Check on progress of the inversion and start/update the IRLS process.
finish()	Update inversion parameter(s) according to directive at end of inversion.
initialize()	Initialize the IRLS iterations with l2-norm regularization (mode:1).
misfit_from_chi_factor(chi_factor)	Compute the target misfit from the chi factor.
start_irls()	Start the IRLS iterations by computing the initial threshold values.
stopping_criteria()	Check for stopping criteria of max_irls_iteration or minimum change.
validate([directiveList])	Validate directive.