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依我国各省(市、自治区)报纸种数、报纸总印数和报纸总印张数等三个指标1986-2006年的数据,构建这一时期各指标相对熵的时间序列。应用ADF检验求时间序列单整阶数并做出分析,应用方向数据统计探讨报纸总印张数相对熵的周期变化。
According to the data of three indicators (1986-2006) such as the number of newspapers in various provinces (cities and autonomous regions), the total number of newspapers and the total number printed in newspapers, the time series of the relative entropy of each index in this period is constructed. Apply ADF test to find the whole order of time series and make analysis, and apply the direction data statistics to explore the periodic change of the relative entropy of the total number of printed newspaper.