/usr/include/opengm/utilities/modelTrees.hxx is in libopengm-dev 2.3.6+20160905-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | #pragma once
#ifndef OPENGM_MODELTREES_HXX
#define OPENGM_MODELTRESS_HXX
#include <string>
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include "opengm/functions/scaled_view.hxx"
#include "opengm/graphicalmodel/graphicalmodel.hxx"
//#include "opengm/graphicalmodel/graphicalmodel_hdf5.hxx"
#include "opengm/operations/adder.hxx"
#include "opengm/utilities/random.hxx"
#include "opengm/datastructures/partition.hxx"
#include <boost/lexical_cast.hpp>
namespace opengm{
template<class GM>
class modelTrees{
public:
typedef GM GmType;
typedef typename GM::ValueType ValueType;
typedef typename GM::IndexType IndexType;
typedef typename GM::LabelType LabelType;
typedef typename GM::OperatorType OperatorType;
modelTrees(const GmType&);
IndexType numberOfTrees() const;
IndexType treeOfVariable(IndexType i); //Root index if Variable is in a Tree, numberOfVariables if not
IndexType parentOfVariable(IndexType i); //Parent index if Variable is in a Tree, numberOfVariables if not
IndexType treeOfRoot(IndexType i);
void roots(std::vector<IndexType>&);
void nodes(std::vector<std::vector<IndexType> >&);
private:
const GmType& gm_;
// Partition Trees_;
std::map<IndexType, IndexType> representives_;
std::vector<IndexType> parents_;
std::vector<bool> b_roots_;
IndexType numberOfRoots_;
};
// end class
// Constructor
template<class GM>
modelTrees<GM>::modelTrees(const GmType& gm)
:
gm_(gm)
{
std::vector<std::set<IndexType> > neighbors;
gm_.variableAdjacencyList(neighbors);
std::vector<IndexType> degree(gm_.numberOfVariables());
std::vector<IndexType> leafs;
b_roots_.resize(gm_.numberOfVariables());
parents_.resize(gm_.numberOfVariables());
typename std::set<typename GM::IndexType>::iterator it;
typename std::set<typename GM::IndexType>::iterator fi;
for(IndexType i=0;i<degree.size();++i){
degree[i]=neighbors[i].size();
parents_[i]=gm_.numberOfVariables();
if(degree[i]==1){
leafs.push_back(i);
}
}
while(!leafs.empty()){
IndexType l=leafs.back();
leafs.pop_back();
if(degree[l]>0){
it=neighbors[l].begin();
b_roots_[*it]=1;
b_roots_[l]=0;
parents_[l]=*it;
parents_[*it]=*it;
degree[*it]=degree[*it]-1;
fi=neighbors[*it].find(l);
neighbors[*it].erase(fi);
if(degree[*it]==1){
leafs.push_back(*it);
}
}
}
numberOfRoots_=0;
for(IndexType i=0;i<gm_.numberOfVariables();++i){
if(b_roots_[i]==1){
representives_[i]=numberOfRoots_;
numberOfRoots_++;
}
}
}
template<class GM>
inline
typename GM::IndexType modelTrees<GM>::numberOfTrees() const{
return numberOfRoots_;
}
template<class GM>
inline
typename GM::IndexType modelTrees<GM>::treeOfVariable(IndexType i){
if(parents_[i]==gm_.numberOfVariables()){
return gm_.numberOfVariables();
}
else{
IndexType r=i;
while(parents_[r]!=r){
r=parents_[r];
}
return r;
}
}
template<class GM>
inline
void modelTrees<GM>::roots(std::vector<IndexType>& roots){
roots.resize(numberOfRoots_);
IndexType j=0;
for(IndexType i=0;i<gm_.numberOfVariables();++i){
if(b_roots_[i]==1){
roots[j]=i;
j++;
}
}
}
template<class GM>
inline
typename GM::IndexType modelTrees<GM>::parentOfVariable(IndexType i){
if(parents_[i]==gm_.numberOfVariables()){
return gm_.numberOfVariables();
}
else{
return parents_[i];
}
}
template<class GM>
inline
void modelTrees<GM>::nodes(std::vector<std::vector<IndexType> >& nodes){
nodes.resize(numberOfRoots_);
for(IndexType i=0;i<gm_.numberOfVariables();++i){
if(parents_[i]!=gm_.numberOfVariables()){
IndexType treeID = representives_[treeOfVariable(i)];
nodes[treeID].push_back(i);
}
}
}
template<class GM>
inline
typename GM::IndexType modelTrees<GM>::treeOfRoot(IndexType i){
if(parents_[i]==gm_.numberOfVariables()){
return gm_.numberOfVariables();
}
else{
return representives_[treeOfVariable(i)];
}
}
}
#endif
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