Grey System Theory Applications

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FastManly: An EM-Gradient Algorithm for Manly Mixture Models
Katharine M. Clark, Paul D. McNicholas · 24 de septiembre de 2026
A faster implementation of mixtures of Manly transformations is proposed. This method, called FastManly, uses Newton's method for optimization in an EM gradient algorithm instead of Nelder-Mead in a traditional EM. A gradient and full Hessian are derived. Simulations show improved performance with n…
Importance Weighting Correction of Regularized Least-Squares for Target Shift
Davit Gogolashvili · 4 de marzo de 2026
Importance weighting is a standard tool for correcting distribution shift, but its statistical behavior under target shift -- where the label distribution changes between training and testing while the conditional distribution of inputs given the label remains stable -- remains under-explored. We an…

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