Grey incidence analysis based on coefficient of determination and its economic application with the data of Central Henan Urban Agglomeration

Grey incidence analysis is the basis of grey models, grey decision-making and grey control which concentrates on the degree of grey incidence. Grey incidence analysis compares with geometric patterns of system statistical series to analyze the degree of grey incidence of system factors. The more similar the curves are, the closer the developmental trend of each factor, then the greater the degree of grey incidence. This paper constructs a new model of calculating the degree of grey incidence on the base of this fundamental idea. First, this paper deals with the original sequence by accumulating generation and specific gravity generation. Then, with the principle of the coefficient of determination, it undertakes two ways to calculate the degree of grey incidence. Finally, we use the data of Central Henan urban agglomeration to show the method is practical and reliable.