A new grey quadratic polynomial model and its application in the COVID-19 in China

Abstract This paper develops a new grey prediction model with quadratic polynomial term. Analytical expressions of the time response function and the restored values of the new model are derived by using grey model technique and mathematical tools. With observations of the confirmed cases, the death...

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Bibliographic Details
Main Authors: Jianbo Zhang, Zeyou Jiang
Format: Article
Language:English
Published: Nature Publishing Group 2021-06-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-91970-1