70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
// (C) Copyright Andrew Sutton 2007
|
|
//
|
|
// Use, modification and distribution are subject to the
|
|
// Boost Software License, Version 1.0 (See accompanying file
|
|
// LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
|
|
//[code_clustering_coefficient
|
|
#include <iostream>
|
|
#include <iomanip>
|
|
|
|
#include <boost/graph/undirected_graph.hpp>
|
|
#include <boost/graph/exterior_property.hpp>
|
|
#include <boost/graph/clustering_coefficient.hpp>
|
|
#include "helper.hpp"
|
|
|
|
using namespace std;
|
|
using namespace boost;
|
|
|
|
// The Actor type stores the name of each vertex in the graph.
|
|
struct Actor
|
|
{
|
|
string name;
|
|
};
|
|
|
|
// Declare the graph type and its vertex and edge types.
|
|
typedef undirected_graph<Actor> Graph;
|
|
typedef graph_traits<Graph>::vertex_descriptor Vertex;
|
|
typedef graph_traits<Graph>::edge_descriptor Edge;
|
|
|
|
// The name map provides an abstract accessor for the names of
|
|
// each vertex. This is used during graph creation.
|
|
typedef property_map<Graph, string Actor::*>::type NameMap;
|
|
|
|
// The clustering property, container, and map define the containment
|
|
// and abstract accessor for the clustering coefficients of vertices.
|
|
typedef exterior_vertex_property<Graph, float> ClusteringProperty;
|
|
typedef ClusteringProperty::container_type ClusteringContainer;
|
|
typedef ClusteringProperty::map_type ClusteringMap;
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
// Create the graph and a name map that provides access to
|
|
// then actor names.
|
|
Graph g;
|
|
NameMap nm(get(&Actor::name, g));
|
|
|
|
// Read the graph from standard input.
|
|
read_graph(g, nm, cin);
|
|
|
|
// Compute the clustering coefficients of each vertex in the graph
|
|
// and the mean clustering coefficient which is returned from the
|
|
// computation.
|
|
ClusteringContainer coefs(num_vertices(g));
|
|
ClusteringMap cm(coefs, g);
|
|
float cc = all_clustering_coefficients(g, cm);
|
|
|
|
// Print the clustering coefficient of each vertex.
|
|
graph_traits<Graph>::vertex_iterator i, end;
|
|
for(boost::tie(i, end) = vertices(g); i != end; ++i) {
|
|
cout << setw(12) << setiosflags(ios::left)
|
|
<< g[*i].name << get(cm, *i) << endl;
|
|
}
|
|
cout << "mean clustering coefficient: " << cc << endl;
|
|
|
|
return 0;
|
|
}
|
|
//]
|