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detail/
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distributed/
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planar_detail/
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property_maps/
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accounting.hpp
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adjacency_iterator.hpp
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adjacency_list.hpp
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adjacency_list_io.hpp
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adjacency_matrix.hpp
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adj_list_serialize.hpp
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bandwidth.hpp
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bc_clustering.hpp
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bipartite.hpp
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circle_layout.hpp
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clustering_coefficient.hpp
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compressed_sparse_row_graph.hpp
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connected_components.hpp
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copy.hpp
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core_numbers.hpp
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create_condensation_graph.hpp
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cuthill_mckee_ordering.hpp
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cycle_canceling.hpp
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dag_shortest_paths.hpp
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degree_centrality.hpp
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depth_first_search.hpp
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dijkstra_shortest_paths.hpp
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dijkstra_shortest_paths_no_color_map.hpp
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dimacs.hpp
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directed_graph.hpp
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dll_import_export.hpp
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dominator_tree.hpp
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eccentricity.hpp
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edge_coloring.hpp
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edge_connectivity.hpp
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edge_list.hpp
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erdos_renyi_generator.hpp
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exterior_property.hpp
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filtered_graph.hpp
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graphml.hpp
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graphviz.hpp
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graph_archetypes.hpp
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graph_as_tree.hpp
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graph_concepts.hpp
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graph_mutability_traits.hpp
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graph_selectors.hpp
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graph_stats.hpp
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graph_traits.hpp
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graph_utility.hpp
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grid_graph.hpp
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hawick_circuits.hpp
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howard_cycle_ratio.hpp
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incremental_components.hpp
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isomorphism.hpp
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is_kuratowski_subgraph.hpp
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is_straight_line_drawing.hpp
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iteration_macros.hpp
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kamada_kawai_spring_layout.hpp
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king_ordering.hpp
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kruskal_min_spanning_tree.hpp
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labeled_graph.hpp
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leda_graph.hpp
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lookup_edge.hpp
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loop_erased_random_walk.hpp
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make_biconnected_planar.hpp
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make_connected.hpp
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make_maximal_planar.hpp
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matrix_as_graph.hpp
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maximum_adjacency_search.hpp
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maximum_weighted_matching.hpp
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max_cardinality_matching.hpp
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mcgregor_common_subgraphs.hpp
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mesh_graph_generator.hpp
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metis.hpp
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metric_tsp_approx.hpp
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minimum_degree_ordering.hpp
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named_function_params.hpp
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neighbor_bfs.hpp
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numeric_values.hpp
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one_bit_color_map.hpp
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overloading.hpp
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page_rank.hpp
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planar_canonical_ordering.hpp
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planar_face_traversal.hpp
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plod_generator.hpp
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point_traits.hpp
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prim_minimum_spanning_tree.hpp
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profile.hpp
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properties.hpp
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property_iter_range.hpp
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push_relabel_max_flow.hpp
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random.hpp
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random_layout.hpp
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random_spanning_tree.hpp
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read_dimacs.hpp
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relax.hpp
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reverse_graph.hpp
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rmat_graph_generator.hpp
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r_c_shortest_paths.hpp
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sequential_vertex_coloring.hpp
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simple_point.hpp
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sloan_ordering.hpp
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smallest_last_ordering.hpp
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small_world_generator.hpp
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ssca_graph_generator.hpp
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stanford_graph.hpp
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stoer_wagner_min_cut.hpp
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strong_components.hpp
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st_connected.hpp
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subgraph.hpp
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successive_shortest_path_nonnegative_weights.hpp
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tiernan_all_cycles.hpp
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topological_sort.hpp
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topology.hpp
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transpose_graph.hpp
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tree_traits.hpp
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two_bit_color_map.hpp
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two_graphs_common_spanning_trees.hpp
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undirected_dfs.hpp
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undirected_graph.hpp
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use_mpi.hpp
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vector_as_graph.hpp
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vertex_and_edge_range.hpp
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vf2_sub_graph_iso.hpp
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visitors.hpp
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wavefront.hpp
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write_dimacs.hpp
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/usr/include/boost/graph/page_rank.hpp
(6164B)
// Copyright 2004-5 The Trustees of Indiana University. // Copyright 2002 Brad King and Douglas Gregor // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // Authors: Douglas Gregor // Andrew Lumsdaine #ifndef BOOST_GRAPH_PAGE_RANK_HPP #define BOOST_GRAPH_PAGE_RANK_HPP #include <boost/property_map/property_map.hpp> #include <boost/graph/graph_traits.hpp> #include <boost/graph/properties.hpp> #include <boost/graph/iteration_macros.hpp> #include <boost/graph/overloading.hpp> #include <boost/graph/detail/mpi_include.hpp> #include <vector> namespace boost { namespace graph { struct n_iterations { explicit n_iterations(std::size_t n) : n(n) {} template < typename RankMap, typename Graph > bool operator()(const RankMap&, const Graph&) { return n-- == 0; } private: std::size_t n; }; namespace detail { template < typename Graph, typename RankMap, typename RankMap2 > void page_rank_step(const Graph& g, RankMap from_rank, RankMap2 to_rank, typename property_traits< RankMap >::value_type damping, incidence_graph_tag) { typedef typename property_traits< RankMap >::value_type rank_type; // Set new rank maps BGL_FORALL_VERTICES_T(v, g, Graph) put(to_rank, v, rank_type(1 - damping)); BGL_FORALL_VERTICES_T(u, g, Graph) { rank_type u_rank_out = damping * get(from_rank, u) / out_degree(u, g); BGL_FORALL_ADJ_T(u, v, g, Graph) put(to_rank, v, get(to_rank, v) + u_rank_out); } } template < typename Graph, typename RankMap, typename RankMap2 > void page_rank_step(const Graph& g, RankMap from_rank, RankMap2 to_rank, typename property_traits< RankMap >::value_type damping, bidirectional_graph_tag) { typedef typename property_traits< RankMap >::value_type damping_type; BGL_FORALL_VERTICES_T(v, g, Graph) { typename property_traits< RankMap >::value_type rank(0); BGL_FORALL_INEDGES_T(v, e, g, Graph) rank += get(from_rank, source(e, g)) / out_degree(source(e, g), g); put(to_rank, v, (damping_type(1) - damping) + damping * rank); } } } // end namespace detail template < typename Graph, typename RankMap, typename Done, typename RankMap2 > void page_rank(const Graph& g, RankMap rank_map, Done done, typename property_traits< RankMap >::value_type damping, typename graph_traits< Graph >::vertices_size_type n, RankMap2 rank_map2 BOOST_GRAPH_ENABLE_IF_MODELS_PARM( Graph, vertex_list_graph_tag)) { typedef typename property_traits< RankMap >::value_type rank_type; rank_type initial_rank = rank_type(rank_type(1) / n); BGL_FORALL_VERTICES_T(v, g, Graph) put(rank_map, v, initial_rank); bool to_map_2 = true; while ((to_map_2 && !done(rank_map, g)) || (!to_map_2 && !done(rank_map2, g))) { typedef typename graph_traits< Graph >::traversal_category category; if (to_map_2) { detail::page_rank_step( g, rank_map, rank_map2, damping, category()); } else { detail::page_rank_step( g, rank_map2, rank_map, damping, category()); } to_map_2 = !to_map_2; } if (!to_map_2) { BGL_FORALL_VERTICES_T(v, g, Graph) put(rank_map, v, get(rank_map2, v)); } } template < typename Graph, typename RankMap, typename Done > void page_rank(const Graph& g, RankMap rank_map, Done done, typename property_traits< RankMap >::value_type damping, typename graph_traits< Graph >::vertices_size_type n) { typedef typename property_traits< RankMap >::value_type rank_type; std::vector< rank_type > ranks2(num_vertices(g)); page_rank(g, rank_map, done, damping, n, make_iterator_property_map(ranks2.begin(), get(vertex_index, g))); } template < typename Graph, typename RankMap, typename Done > inline void page_rank(const Graph& g, RankMap rank_map, Done done, typename property_traits< RankMap >::value_type damping = 0.85) { page_rank(g, rank_map, done, damping, num_vertices(g)); } template < typename Graph, typename RankMap > inline void page_rank(const Graph& g, RankMap rank_map) { page_rank(g, rank_map, n_iterations(20)); } // TBD: this could be _much_ more efficient, using a queue to store // the vertices that should be reprocessed and keeping track of which // vertices are in the queue with a property map. Baah, this only // applies when we have a bidirectional graph. template < typename MutableGraph > void remove_dangling_links( MutableGraph& g BOOST_GRAPH_ENABLE_IF_MODELS_PARM( MutableGraph, vertex_list_graph_tag)) { typename graph_traits< MutableGraph >::vertices_size_type old_n; do { old_n = num_vertices(g); typename graph_traits< MutableGraph >::vertex_iterator vi, vi_end; for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; /* in loop */) { typename graph_traits< MutableGraph >::vertex_descriptor v = *vi++; if (out_degree(v, g) == 0) { clear_vertex(v, g); remove_vertex(v, g); } } } while (num_vertices(g) < old_n); } } } // end namespace boost::graph #include BOOST_GRAPH_MPI_INCLUDE(<boost/graph/distributed/page_rank.hpp>) #endif // BOOST_GRAPH_PAGE_RANK_HPP
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