运用stata计算最大熵，包含说明和原程序(Using Stata to calculate maximum entropy)

此压缩文件里面包含面板数据熵值法的stata代码，每一步都有详细的解释，并且附有样本和数据，方便学者理解和掌握。(This compressed file contains the stat a code of panel data entropy method, each step has a detailed explanation, and is attached with samples and data, which is c