excel自动计算熵权法代码(vba).txt
时间: 2023-05-11 11:01:12 浏览: 183
熵权法是一种权重确定方法,适用于多指标评价或决策问题。在Excel中,可以通过VBA自动计算熵权法,例如下面的代码:
Sub 熵权法计算()
Dim x As Integer
Dim y As Integer
Dim sum As Double
Dim p() As Double
Dim w() As Double
Dim r() As Double
Dim n As Integer
n = Range("A1") '获取指标个数
ReDim p(n - 1)
ReDim w(n - 1)
ReDim r(n - 1)
'读入指标权重矩阵
For x = 1 To n
For y = 1 To n
Cells(x + 1, y) = InputBox("请输入第" & x & "个指标对第" & y & "个指标的权重", "输入权重")
Next
Next
'计算每个指标的熵值和权重
For x = 1 To n
sum = 0
For y = 1 To n
sum = sum + Cells(x + 1, y)
Next
r(x - 1) = sum '计算第x个指标的熵值
sum = 0
For y = 1 To n
Cells(x + 1, y) = Cells(x + 1, y) / r(x - 1) '归一化处理
sum = sum + Cells(x + 1, y) * Log(Cells(x + 1, y)) / Log(n) '计算信息熵
Next
p(x - 1) = 1 / sum '计算第x个指标的权重
Next
'将指标权重输出到单元格B1-Bn
For x = 1 To n
Cells(1, x + 1) = "指标" & x
Cells(2, x + 1) = p(x - 1)
Next
End Sub
该代码将要求用户输入每个指标对其它指标的权重,然后计算每个指标的熵值和权重,最后将指标权重输出到单元格B1-Bn中。使用该代码可以快速、方便地进行熵权法计算,提高工作效率。