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

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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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
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spelling doaj-9b268aca77a94eb8be177fe845dedb852021-06-20T11:33:39ZengNature Publishing GroupScientific Reports2045-23222021-06-0111112710.1038/s41598-021-91970-1A new grey quadratic polynomial model and its application in the COVID-19 in ChinaJianbo Zhang0Zeyou Jiang1Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital Central LaboratoryDepartment of Clinical Laboratory, Affiliated Hospital of Chengdu University of Traditional Chinese MedicineAbstract 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 cases and the recovered cases from COVID-19 in China at the early stage, the proposed forecasting model is developed. The computational results demonstrate that the new model has higher precision than the other existing prediction models, which show the grey model has high accuracy in the forecasting of COVID-19.https://doi.org/10.1038/s41598-021-91970-1
collection DOAJ
language English
format Article
sources DOAJ
author Jianbo Zhang
Zeyou Jiang
spellingShingle Jianbo Zhang
Zeyou Jiang
A new grey quadratic polynomial model and its application in the COVID-19 in China
Scientific Reports
author_facet Jianbo Zhang
Zeyou Jiang
author_sort Jianbo Zhang
title A new grey quadratic polynomial model and its application in the COVID-19 in China
title_short A new grey quadratic polynomial model and its application in the COVID-19 in China
title_full A new grey quadratic polynomial model and its application in the COVID-19 in China
title_fullStr A new grey quadratic polynomial model and its application in the COVID-19 in China
title_full_unstemmed A new grey quadratic polynomial model and its application in the COVID-19 in China
title_sort new grey quadratic polynomial model and its application in the covid-19 in china
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2021-06-01
description 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 cases and the recovered cases from COVID-19 in China at the early stage, the proposed forecasting model is developed. The computational results demonstrate that the new model has higher precision than the other existing prediction models, which show the grey model has high accuracy in the forecasting of COVID-19.
url https://doi.org/10.1038/s41598-021-91970-1
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AT zeyoujiang anewgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina
AT jianbozhang newgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina
AT zeyoujiang newgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina
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