EKI
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Related Articles from SNS
Ensemble Kalman Inversion as an Inertial Interacting Particle System
arXiv:2606.06121v1 Announce Type: new Abstract: Ensemble Kalman Inversion (EKI) is a derivative-free, ensemble-based method for inverse and optimization problems. Its continuous-time formulation can be interpreted as an interacting particle system driven by a Kalman-type preconditioned descent direction. A well-known limitation of this dynamics is the possible premature collapse of the covariance of the ensemble, which makes the method sensitive to the initial ensemble.
All 9,300 Japanese train station, animated by the year it opened (1872–2026)
Eki · 駅 150 years of Japan, drawn in stations. On a June morning in 1872, Japan’s entire railway was a single line between Shimbashi and Yokohama. A century and a half later the map carries more than nine thousand stations.