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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Autores principales:	Jianbo Zhang, Zeyou Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9b268aca77a94eb8be177fe845dedb85
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spelling	oai:doaj.org-article:9b268aca77a94eb8be177fe845dedb852021-12-02T17:41:28ZA new grey quadratic polynomial model and its application in the COVID-19 in China10.1038/s41598-021-91970-12045-2322https://doaj.org/article/9b268aca77a94eb8be177fe845dedb852021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91970-1https://doaj.org/toc/2045-2322Abstract 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.Jianbo ZhangZeyou JiangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-27 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jianbo Zhang Zeyou Jiang A new grey quadratic polynomial model and its application in the COVID-19 in China
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.
format	article
author	Jianbo Zhang Zeyou Jiang
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 Portfolio
publishDate	2021
url	https://doaj.org/article/9b268aca77a94eb8be177fe845dedb85
work_keys_str_mv	AT jianbozhang anewgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina AT zeyoujiang anewgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina AT jianbozhang newgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina AT zeyoujiang newgreyquadraticpolynomialmodelanditsapplicationinthecovid19inchina
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A new grey quadratic polynomial model and its application in the COVID-19 in China

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