benchmark/min_cut.cc
changeset 2362 eb37b9774ef6
child 2391 14a343be7a5a
equal deleted inserted replaced
-1:000000000000 0:d5328a15f8b6
       
     1 #include <lemon/list_graph.h>
       
     2 
       
     3 #include <lemon/hao_orlin.h>
       
     4 #include <lemon/nagamochi_ibaraki.h>
       
     5 #include <lemon/time_measure.h>
       
     6 
       
     7 using namespace lemon;
       
     8 
       
     9 #include "min_cut_graphs.h"
       
    10 
       
    11 
       
    12 void testRegUGraph();
       
    13 void testNoiUGraph();
       
    14 void testBikeWheelUGraph();
       
    15 
       
    16 int main() {
       
    17   testRegUGraph();
       
    18   testNoiUGraph();
       
    19   testBikeWheelUGraph();
       
    20   return 0;
       
    21 }
       
    22 
       
    23 //#define int long long
       
    24 
       
    25 
       
    26 int cutValue(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c,
       
    27            const ListUGraph::NodeMap<bool>& n) {
       
    28   int v = 0;
       
    29   for (ListUGraph::UEdgeIt e(g); e != INVALID; ++e) {
       
    30     if (n[g.source(e)] != n[g.target(e)]) {
       
    31       v += c[e];
       
    32     }
       
    33   }
       
    34   return v;
       
    35 }
       
    36 
       
    37 int cutSize(const ListUGraph& g, const ListUGraph::NodeMap<bool>& nm) {
       
    38   int m = 0;
       
    39   for (ListUGraph::NodeIt n(g); n != INVALID; ++n) {
       
    40     if (nm[n]) {
       
    41       ++m;
       
    42     }
       
    43   }
       
    44   return m;
       
    45 }
       
    46 
       
    47 int testNI(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c) {
       
    48   TimeReport tr("Nagamochi-Ibaraki : ");
       
    49   NagamochiIbaraki<ListUGraph, ListUGraph::UEdgeMap<int> > alg(g, c);
       
    50   alg.run();
       
    51   ListUGraph::NodeMap<bool> n(g);
       
    52   alg.minCut(n);
       
    53   std::cout << "Check : " << cutValue(g, c, n) << ' '
       
    54             << cutSize(g, n) << std::endl;
       
    55   return alg.minCut();
       
    56 }
       
    57 
       
    58 int testHO(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c) {
       
    59   TimeReport tr("Hao-Orlin : ");
       
    60   HaoOrlin<ListUGraph, ListUGraph::UEdgeMap<int> > alg(g, c);
       
    61   alg.init();
       
    62   alg.calculateOut();
       
    63   ListUGraph::NodeMap<bool> n(g);
       
    64   alg.minCut(n);
       
    65   std::cout << "Check : " << cutValue(g, c, n) << ' '
       
    66             << cutSize(g, n) << std::endl;
       
    67   return alg.minCut();
       
    68 }
       
    69 
       
    70 void testBikeWheelUGraph(int n) {
       
    71   ListUGraph g;
       
    72   ListUGraph::UEdgeMap<int> c(g);
       
    73   genBikeWheelUGraph(g, c, n);
       
    74   std::cout << "Node number : " << n << std::endl;
       
    75   std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;
       
    76   std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;
       
    77 }
       
    78 
       
    79 void testBikeWheelUGraph() {
       
    80   std::cout << "BikeWheelUGraph : " << std::endl;
       
    81   for (int k = 10; k <= 13; ++k) {
       
    82     int n = 1 << k;
       
    83     testBikeWheelUGraph(n);
       
    84   }
       
    85 }
       
    86 
       
    87 void testNoiUGraph(int n, int d, int k, int p) {
       
    88   ListUGraph g;
       
    89   ListUGraph::UEdgeMap<int> c(g);
       
    90   genNoiUGraph(g, c, n, d, k, p);
       
    91   std::cout << "Node number : " << n << std::endl;
       
    92   std::cout << "Density : " << d << std::endl;
       
    93   std::cout << "Tight components : " << k << std::endl;
       
    94   std::cout << "Scale : " << p << std::endl;
       
    95   std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;
       
    96   std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;
       
    97 }
       
    98 
       
    99 
       
   100 void testNoiUGraph() {
       
   101   std::cout << "NoiUGraph : " << std::endl; 
       
   102   std::cout << "Serial 1 : " << std::endl;
       
   103   for (int n = 300; n <= 1000; n += 100) {
       
   104     testNoiUGraph(n, 50, 1, n);
       
   105   }
       
   106   std::cout << "Serial 2 : " << std::endl;
       
   107   for (int n = 300; n <= 1000; n += 100) {
       
   108     testNoiUGraph(n, 50, 2, n);
       
   109   }
       
   110   std::cout << "Serial 3 : " << std::endl;
       
   111   int da3[] = { 5, 10, 25, 50, 75, 100 };
       
   112   int dn3 = sizeof(da3) / sizeof(da3[0]);
       
   113   for (int d = 0; d < dn3; ++d) {
       
   114     testNoiUGraph(1000, da3[d], 1, 1000);
       
   115   }
       
   116   std::cout << "Serial 4 : " << std::endl;
       
   117   for (int d = 0; d < dn3; ++d) {
       
   118     testNoiUGraph(1000, da3[d], 2, 1000);
       
   119   }
       
   120   std::cout << "Serial 5 : " << std::endl;
       
   121   int ka5[] = {1, 2, 3, 5, 7, 10, 20, 30, 33, 35, 
       
   122                40, 50, 100, 200, 300, 400, 500};
       
   123   int kn5 = sizeof(ka5) / sizeof(ka5[0]);
       
   124   for (int k = 0; k < kn5; ++k) {
       
   125     testNoiUGraph(1000, 50, ka5[k], 1000);
       
   126   }
       
   127   std::cout << "Serial 6 : " << std::endl;
       
   128   int pa6[] = { 5000, 2000, 1000, 500, 250, 100, 50, 10, 1};
       
   129   int pn6 = sizeof(pa6) / sizeof(pa6[0]);
       
   130   for (int p = 0; p < pn6; ++p) {
       
   131     testNoiUGraph(1000, 50, 2, pa6[p]);
       
   132   }  
       
   133   
       
   134 }
       
   135 
       
   136 void testRegUGraph(int n, int d) {
       
   137   ListUGraph g;
       
   138   ListUGraph::UEdgeMap<int> c(g);
       
   139   genRegUGraph(g, c, n, d);
       
   140   std::cout << "Node number : " << n << std::endl;
       
   141   std::cout << "Number of cycles : " << d << std::endl;
       
   142   std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;
       
   143   std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;
       
   144 }
       
   145 
       
   146 void testRegUGraph() {
       
   147   std::cout << "RegUGraph : " << std::endl; 
       
   148   std::cout << "Serial 1 : " << std::endl;
       
   149   int da1[] = { 1, 3, 10, 33, 100, 333, 1000};
       
   150   int dn1 = sizeof(da1) / sizeof(da1[0]);
       
   151   for (int d = 0; d < dn1; ++d) {
       
   152     testRegUGraph(1001, da1[d]);
       
   153   }
       
   154   std::cout << "Serial 2 : " << std::endl;
       
   155   int na2[] = { 50, 100, 200, 400, 800};
       
   156   int nn2 = sizeof(na2) / sizeof(na2[0]);
       
   157   for (int n = 0; n < nn2; ++n) {
       
   158     testRegUGraph(na2[n], 50);
       
   159   }
       
   160   std::cout << "Serial 3 : " << std::endl;
       
   161   for (int n = 8; n <= 14; ++n) {
       
   162     testRegUGraph(1 << n, 2);
       
   163   }
       
   164   std::cout << "Serial 4 : " << std::endl;
       
   165   for (int n = 7; n <= 11; ++n) {
       
   166     testRegUGraph(1 << n, 1 << (n - 4));
       
   167   }  
       
   168 }
       
   169