GMSD(1,1), a discretized Simpson-rule grey model, exactly simulates homogeneous exponential sequences and gives slightly lower prediction error than GM(1,1), DGM(1,1), and GMSC(1,1) on three real datasets.
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Improved GM(1,1) model based on Simpson formula and its applications
GMSD(1,1), a discretized Simpson-rule grey model, exactly simulates homogeneous exponential sequences and gives slightly lower prediction error than GM(1,1), DGM(1,1), and GMSC(1,1) on three real datasets.