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.
All Keywords
【저자키워드】 Diseases, Engineering, 【초록키워드】 COVID-19, China, expression, early stage, death case, observation, Precision, confirmed cases, high accuracy, develop, restored, mathematical, 【제목키워드】 COVID-19, China,
【저자키워드】 Diseases, Engineering, 【초록키워드】 COVID-19, China, expression, early stage, death case, observation, Precision, confirmed cases, high accuracy, develop, restored, mathematical, 【제목키워드】 COVID-19, China,