Inflation is an important problem in the process of economic development,while the CPI is one of the most important indicators of inflation.In this paper,a SARIMA time series model was built to analyze and forecast the short-time CPI,which was based on the monthly data from 1990 to 2011.Meanwhile,the statistical recognition of autocorrelation function and partial autocorrelation function and ADF stationary test were used to inspect their natures.The research results show that the CPI of China has obvious tendency and seasonal fluctuation.Furthermore, the SARIAM model adequately describes the C...
