帮我写一个Matlab做K- means算法K=2的代码 并标注每一部分是什么意思
时间: 2023-06-12 09:05:36 浏览: 90
当然可以,下面是K-means算法K=2的Matlab代码,我会在代码中添加注释来解释每一部分的含义:
```matlab
% 生成测试数据
X = [randn(100,2)*0.75+ones(100,2);...
randn(100,2)*0.5-ones(100,2)];
% 初始化聚类中心
initial_centroids = [X(1,:); X(2,:)];
% 设置K值
K = size(initial_centroids, 1);
% 设置最大迭代次数
max_iters = 10;
% 运行K-means聚类算法
[centroids, idx] = runkMeans(X, initial_centroids, max_iters);
% 将数据可视化
figure;
plotDataPoints(X, idx, K);
% 将聚类中心可视化
hold on;
plot(centroids(:,1), centroids(:,2), 'x', ...
'MarkerEdgeColor', 'k', ...
'MarkerSize', 10, 'LineWidth', 3);
hold off;
```
其中,`randn`函数用于生成服从正态分布的随机数,`ones`函数用于生成全是1的矩阵。`initial_centroids`是聚类中心的初始值,`K`表示聚类的个数,`max_iters`表示最大迭代次数。`runkMeans`函数是K-means算法的核心函数,用于计算聚类中心和数据点所属的类别。`plotDataPoints`函数用于将数据点可视化,`plot`函数用于将聚类中心可视化。
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