用java实现层次分析法
时间: 2023-06-08 16:08:08 浏览: 48
层次分析法(AHP)可以使用Java实现,以下是一个基本的Java代码模板:
```
public class AHP {
private double[] weights;
public AHP(double[][] matrix) {
int size = matrix.length;
double[] sumCols = new double[size];
//计算每列的和
for (int c = 0; c < size; c++) {
double colSum = 0;
for (int r = 0; r < size; r++) {
colSum += matrix[r][c];
}
sumCols[c] = colSum;
}
//计算矩阵的归一化版本
double[][] normMatrix = new double[size][size];
for (int r = 0; r < size; r++) {
for (int c = 0; c < size; c++) {
normMatrix[r][c] = matrix[r][c] / sumCols[c];
}
}
//计算每行的平均值
double[] rowAverages = new double[size];
for (int r = 0; r < size; r++) {
double rowSum = 0;
for (int c = 0; c < size; c++) {
rowSum += normMatrix[r][c];
}
rowAverages[r] = rowSum / size;
}
//归一化平均值
double rowSum = 0;
for (int r = 0; r < size; r++) {
rowSum += rowAverages[r];
}
for (int r = 0; r < size; r++) {
rowAverages[r] /= rowSum;
}
weights = rowAverages;
}
public double[] getWeights() {
return weights;
}
}
```
这个代码段实现了一个简单的AHP算法,它接受一个二维数组,其中包含要进行层次分析的项目的重要性矩阵,并计算每个项目的权重。