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C++是一種強大的編程語言,可以用于實現各種復雜的網絡社區結構發現算法。以下是一些常用的C++聚類算法,可以幫助您分析和發現網絡中的社區結構:
igraph
來實現Louvain算法。以下是一個簡單的示例代碼:#include <igraph.h>
#include <iostream>
int main() {
igraph_t graph;
igraph_vector_t community;
igraph_vector_t membership;
int n, no_of_edges, i;
igraph_small(&graph, 6, IGRAPH_UNDIRECTED, 0, 0, 0, 0, 0, 0);
n = igraph_vcount(&graph);
no_of_edges = igraph_ecount(&graph);
igraph_community_louvain(&graph, &community, &membership);
std::cout << "Community structure:" << std::endl;
for (i = 0; i < n; ++i) {
std::cout << "Node "<< i << ": Community " << membership[i] << std::endl;
}
igraph_destroy(&graph);
igraph_vector_destroy(&community);
igraph_vector_destroy(&membership);
return 0;
}
igraph
來實現Girvan-Newman算法。以下是一個簡單的示例代碼:#include <igraph.h>
#include <iostream>
int main() {
igraph_t graph;
igraph_vector_t community;
igraph_vector_t membership;
int n, no_of_edges, i;
igraph_small(&graph, 6, IGRAPH_UNDIRECTED, 0, 0, 0, 0, 0, 0);
n = igraph_vcount(&graph);
no_of_edges = igraph_ecount(&graph);
igraph_community_girvan_newman(&graph, &community, &membership);
std::cout << "Community structure:" << std::endl;
for (i = 0; i < n; ++i) {
std::cout << "Node "<< i << ": Community " << membership[i] << std::endl;
}
igraph_destroy(&graph);
igraph_vector_destroy(&community);
igraph_vector_destroy(&membership);
return 0;
}
Eigen
和scikit-learn
來實現Spectral Clustering算法。以下是一個簡單的示例代碼:#include <iostream>
#include <Eigen/Dense>
#include <vector>
#include <cluster/spectral_clustering.hpp>
int main() {
std::vector<std::pair<int, int>> edges = {{0, 1}, {1, 2}, {2, 3}, {3, 4}, {4, 5}};
int n = edges.size() + 1;
Eigen::MatrixXd affinity_matrix(n, n);
for (const auto& edge : edges) {
affinity_matrix(edge.first, edge.second) = 1;
affinity_matrix(edge.second, edge.first) = 1;
}
std::vector<int> labels;
SpectralClustering::cluster(affinity_matrix, labels, 2);
std::cout << "Community structure:" << std::endl;
for (int i = 0; i < n; ++i) {
std::cout << "Node "<< i << ": Community " << labels[i] << std::endl;
}
return 0;
}
這些算法可以幫助您分析和發現網絡中的社區結構。您可以根據具體問題和需求選擇合適的算法,并根據需要對其進行修改和優化。
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