stata熵权法topsis代码

Stata是一种统计分析软件，熵权法和TOPSIS（Technique for Order of Preference by Similarity to Ideal Solution）都是多属性决策分析方法。以下是一个示例Stata代码，用于实施熵权法和TOPSIS：

1. 熵权法代码：

// 导入数据
import delimited "your_data_file.csv", clear

// 计算指标的熵值
egen entropy = entropy(indicator1 indicator2 ... indicatorN)

// 计算指标的权重
egen weight = entropy / sum(entropy)

// 打印指标的权重
list weight, noobs

// 计算加权和
gen weighted_sum = indicator1 * weight1 + indicator2 * weight2 + ... + indicatorN * weightN

// 打印加权和
list weighted_sum, noobs

2. TOPSIS代码：

// 导入数据
import delimited "your_data_file.csv", clear

// 数据标准化
egen normalized_indicator1 = std(indicator1)
egen normalized_indicator2 = std(indicator2)
...

// 求最优解和最劣解
egen max_indicator1 = max(normalized_indicator1)
egen min_indicator1 = min(normalized_indicator1)
egen max_indicator2 = max(normalized_indicator2)
egen min_indicator2 = min(normalized_indicator2)
...

// 计算正理想解和负理想解
gen positive_ideal = (normalized_indicator1 - min_indicator1)^2 + (normalized_indicator2 - min_indicator2)^2 + ...
gen negative_ideal = (normalized_indicator1 - max_indicator1)^2 + (normalized_indicator2 - max_indicator2)^2 + ...

// 计算综合评价指数
gen topsis_score = sqrt(positive_ideal) / (sqrt(positive_ideal) + sqrt(negative_ideal))

// 打印综合评价指数
list topsis_score, noobs

希望以上代码能帮到你！如果还有其他问题，请继续提问。