simpeg.directives.PairedBetaEstimate_ByEig.initialize#
- PairedBetaEstimate_ByEig.initialize()[source]#
The initial beta is calculated by comparing the estimated eigenvalues of
and . To estimate the eigenvector of A, we will use one iteration of the Power Method:Given this (very course) approximation of the eigenvector, we can use the Rayleigh quotient to approximate the largest eigenvalue.
We will approximate the largest eigenvalue for both JtJ and WtW, and use some ratio of the quotient to estimate beta0.
- Return type:
- Returns:
beta0