EM is cast as a relaxation flow whose local dynamics are controlled by the spectrum of the missing-information operator G, from which two new accelerators (G-Accelerator and Geo-Adaptive) are derived and shown to outperform standard EM.
Kullback proximal algorithms for maximum-likelihood estimation
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Expectation-Maximization as a Spectrally Governed Relaxation Flow
EM is cast as a relaxation flow whose local dynamics are controlled by the spectrum of the missing-information operator G, from which two new accelerators (G-Accelerator and Geo-Adaptive) are derived and shown to outperform standard EM.