simpeg.directives.AlphasSmoothEstimate_ByEig#

class simpeg.directives.AlphasSmoothEstimate_ByEig(alpha0_ratio=1.0, n_pw_iter=4, seed=None, **kwargs)[source]#

Bases: InversionDirective

Estimate the alphas multipliers for the smoothness terms of the regularization as a multiple of the ratio between the highest eigenvalue of the smallness term and the highest eigenvalue of each smoothness term of the regularization. The highest eigenvalue are estimated through power iterations and Rayleigh quotient.

Attributes

alpha0_ratio

the estimated Alpha_smooth is multiplied by this ratio (int or array).

debug

verbose.debug has been deprecated.

dmisfit

Data misfit associated with the directive.

invProb

Inverse problem associated with the directive.

inversion

Inversion object associated with the directive.

n_pw_iter

Number of power iterations for estimation.

opt

Optimization algorithm associated with the directive.

reg

Regularization associated with the directive.

seed

Random seed to initialize with.

simulation

Return simulation for all data misfits.

survey

Return survey for all data misfits

verbose

Whether or not to print debugging information.

Methods

endIter()

Update inversion parameter(s) according to directive at end of iteration.

finish()

Update inversion parameter(s) according to directive at end of inversion.

validate([directiveList])

Validate directive.

initialize

Galleries and Tutorials using simpeg.directives.AlphasSmoothEstimate_ByEig#

Petrophysically guided inversion (PGI): Linear example

Petrophysically guided inversion (PGI): Linear example

Petrophysically guided inversion: Joint linear example with nonlinear relationships

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 using full petrophysical information

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

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