Research on Global Refugee Total in 2015 Based on Gray Model and Partial Least Squares Model

Abstract

The problem of refugee has existed for a long time. People lose their home and flee to Europe because of the wars. Firstly, we study the relationship between the number of refugees of each year through the gray model. Then, use the partial least squares model to study the impact on the number of refugees in the economic and domestic aspects of the warring countries and Europe. In addition, construct the relative residual rate to analyze the degree of error of the two models. Finally, we forecast 2015 global total number of refugees.