Calculate entropy weights for evaluation indicators, generate weight columns, and calculate comprehensive entropy weight values.
为评价指标计算熵权，生成权重列，计算熵权综合值。
- Run the script:
运行该脚本：
do "计算熵权.do"
- Call function entropy_weight:
调用函数entropy_weight：
entropy_weight var_list , type(+|-) gen(new_var)
List of variables in the stata dataset.
stata数据集中的变量列表。
- type() option: "+" indicates that input variables are all positive indicators, "-" indicates negative indicators.
- type()选项："+"表示输入变量都是正向指标，"-"逆向指标。
gen(): Uses entropy weighting to calculate comprehensive values, generating a new variable named new_var
gen(): 利用熵权计算综合值，生成的新变量命名为new_var
Weights: Generate entropy weight columns corresponding to each variable, with names starting with "ew_".
权值：生成对应于各个变量的熵权列，名称以"ew_"开头。
Comprehensive evaluation value: Use the entropy weight method to calculate the variable list, obtain the entropy weight comprehensive value, named "new_var".
综合评价值：利用熵权法计算变量列表，得到熵权综合值，命名为"new_var"