simpeg.directives.PGI_BetaAlphaSchedule#

class simpeg.directives.PGI_BetaAlphaSchedule(inversion=None, dmisfit=None, reg=None, verbose=False, **kwargs)[source]#

Bases: InversionDirective

This directive is to be used with regularizations from regularization.pgi. It implements the strategy described in https://doi.org/10.1093/gji/ggz389 for iteratively updating beta and alpha_s for fitting the geophysical and smallness targets.

Attributes

`debug`	verbose.debug has been deprecated.
`directives`	List of all the directives in the simpeg.inverison.BaseInversion`.
`dmisfit`	Data misfit associated with the directive.
`invProb`	Inverse problem associated with the directive.
`inversion`	Inversion object associated with the directive.
`multi_target_misfits_directive`	`MultiTargetMisfit` directive in the simpeg.inverison.BaseInversion`.
`opt`	Optimization algorithm associated with the directive.
`pgi_regularization`	PGI regularization in the simpeg.inverse_problem.BaseInvProblem`.
`pgi_update_params_directive`	PGI_UpdateParam``s directive in the :class:`simpeg.inverison.BaseInversion.
`reg`	Regularization associated with the directive.
`simulation`	Return simulation for all data misfits.
`survey`	Return survey for all data misfits

pgi_reg

Methods

`cool_beta`()	Cool beta according to schedule.
`endIter`()	Run after the end of each iteration in the inversion.
`finish`()	Update inversion parameter(s) according to directive at end of inversion.
`initialize`()	Initialize the directive.
`update_previous_dmlist`()	Update the value of the `previous_dmlist` attribute.
`update_previous_score`()	Update the value of the `previous_score` attribute.
`validate`([directiveList])	Validate directive.
`warm_alpha`()	Warm alpha according to schedule.

Galleries and Tutorials using `simpeg.directives.PGI_BetaAlphaSchedule`#

Petrophysically guided inversion (PGI): Linear example

Petrophysically guided inversion: Joint linear example with nonlinear relationships

Joint PGI of Gravity + Magnetic on an Octree mesh using full petrophysical information

Joint PGI of Gravity + Magnetic on an Octree mesh without petrophysical information

simpeg.directives.PGI_BetaAlphaSchedule#

Galleries and Tutorials using simpeg.directives.PGI_BetaAlphaSchedule#

Galleries and Tutorials using `simpeg.directives.PGI_BetaAlphaSchedule`#