matlab权重加大代码

下面是使用Matlab编写的计算权重的代码：

clc;
clear;

X = [0.4830,13.2682,0.0000,4.3646,5.1070;
0.4035,13.4909,39.0131,3.6151,5.5005;
0.8979,25.7776,9.0513,4.8920,7.5342;
0.5927,16.0245,13.2935,4.4529,6.5913];

[n,m] = size(X);

X(:,3) = min_best(X(:,3)); % 将极小型指标转化为加大型

xmin = min(X);
xmax = max(X);
xmaxmin = xmax - xmin;

Z = (X - xmin) ./ repmat(xmaxmin, n, 1); % 最大值最小值标准化，去除量纲

R = corrcoef(Z); % 计算相关系数矩阵，但要将相关系数矩阵都变成正相关

for i = 1:n
for j = 1:m
if R(i,j) < 0
R(i,j) = -R(i,j);
end
end
end

delta = zeros(1,m);
c = zeros(1,m);

for j = 1:m
delta(j) = std(Z(:,j));
c(j) = size(R,1) - sum(R(:,j));
end

C = delta .* c;
w = C ./ sum(C);

这段代码首先定义了一个矩阵X，然后对X进行了一系列的操作，包括将极小型指标转化为加大型，最大值最小值标准化，计算相关系数矩阵并将其变成正相关，最后计算权重w。

注意：代码中的min_best函数是子函数，用于将极小型指标转化为加大型。该函数接受一个向量x，并返回转化后的向量change_x。

希望这能帮到你！<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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