kmeans聚类算法c++实现
时间: 2023-09-11 21:09:19 浏览: 114
kmeans聚类算法,C++实现
K-means聚类算法的C++实现可以参考以下代码:
```cpp
#pragma once
#ifndef K_MEANS_H
#define K_MEANS_H
#include <vector>
using namespace std;
struct Tuple {
float x;
float y;
float z;
};
class K_means {
private:
vector<Tuple> basic_data;
int mean_number;
vector<vector<Tuple>> result_data;
vector<Tuple> means;
vector<float> mea_square_error;
public:
K_means(vector<Tuple> basic_data, int mean_number) : result_data(mean_number), mea_square_error(mean_number) {
this->basic_data = basic_data;
this->mean_number = mean_number;
}
void get_fina_result_data();
private:
float get_distxyz(Tuple tuple1, Tuple tuple2);
void prime_k_meansbase();
void get_k_means();
void get_basemean();
void get_new_k_means();
void get_k_mean_erro();
};
#endif
```
通过这个头文件定义了K_means类和相关的数据结构Tuple。K_means类包含了计算最后聚类结果的方法get_fina_result_data(),以及一些私有方法用于初始化和计算聚类过程。
下面是具体的测试代码:
```cpp
#include <iostream>
#include <vector>
#include "k_means.h"
using namespace std;
void test() {
vector<Tuple> basic_data_test;
Tuple temp_data;
int x = 0, y = 0, z = 0;
int k; // 分类数量
int n; // 样本数量
cout << "请输入类别数量:" << endl;
cin >> k;
cout << "请输入数据量:" << endl;
cin >> n;
for (int i = 0; i < n; i++) {
cout << "请输入x, y, z:" << endl;
cin >> x >> y >> z;
temp_data.x = x;
temp_data.y = y;
temp_data.z = z;
basic_data_test.push_back(temp_data);
}
K_means a(basic_data_test, k);
a.get_fina_result_data();
}
int main() {
test();
}
```
这段测试代码首先获取用户输入的分类数量k和数据量n,然后循环读取用户输入的样本数据,并创建K_means对象进行聚类。最后调用get_fina_result_data()方法获取最终的聚类结果。
这就是一个简单的K-means聚类算法的C++实现。您可以根据自己的需求进行修改和扩展。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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