Esempio n. 1
0
  public static boolean StarBicoloringRestricted(
      GraphModel g, Vector<Integer> V_r, Vector<Integer> V_c) {
    Vector<Integer> forbiddenColors = new Vector<>(V_r.size());
    for (int i = 0; i < V_r.size(); i++) forbiddenColors.add(-1);
    Vector<Integer> Vertices = new Vector<>(V_r.size() + V_c.size());

    // GraphModel gg = g.getCopy();
    for (int v_r : V_r) Vertices.add(v_r);
    for (int v_c : V_c) Vertices.add(v_c);

    for (int v : Vertices) {
      if (g.getVertex(v).getColor() != 0) {
        forbiddenColors.set(0, v);
        for (Vertex w : g.getNeighbors(g.getVertex(v))) {
          if (w.getColor() <= 0) {
            for (Vertex x : g.getNeighbors(w)) {
              if (x.getColor() > 0) {
                if (g.getEdge(x, w).getWeight() == 1
                    || g.getEdge(w, g.getVertex(v)).getWeight() == 1) {
                  forbiddenColors.set(x.getColor(), v);
                }
              }
            }
          } else {
            for (Vertex x : g.getNeighbors(w)) {
              System.out.println(" jez " + g.getEdge(x, w).getWeight());
              if (g.getEdge(x, w).getWeight() == 1) {
                if (x.getColor() > 0) {
                  for (Vertex y : g.getNeighbors(x)) {
                    if (y.getColor() > 0) {
                      if (w.getColor() == y.getColor() && w.getId() != y.getId()) {
                        forbiddenColors.set(x.getColor(), v);
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }

      for (int i = 0; i < forbiddenColors.size(); i++) {
        if (forbiddenColors.get(i) != v) {
          g.getVertex(v).setColor(i);
        }
      }
    }
    return true;
  }
  public Object calculate(GraphModel g) {
    SubGraph sg = new SubGraph();
    MSTPrim mp = new MSTPrim();
    double[][] adj = g.getAdjacencyMatrix().getArray();
    int[][] adjMatrix = new int[g.getVerticesCount()][g.getVerticesCount()];

    for (int i = 0; i < g.getVerticesCount(); i++) {
      for (int j = 0; j < g.getVerticesCount(); j++) {
        if (adj[i][j] == 0) adjMatrix[i][j] = 0;
        else adjMatrix[i][j] = 1;
      }
    }
    int[] parent = mp.prim(adjMatrix);
    for (int i = 0; i < g.getVerticesCount(); i++) {
      if (parent[i] != -1) {
        sg.edges.add(g.getEdge(g.getVertex(i), g.getVertex(parent[i])));
      }
    }
    return sg;
  }
Esempio n. 3
0
  public static int StarBicoloringSchemeCombinedVertexCoverColoringRestricted(
      GraphModel g, final Vector<Integer> V_rr, final Vector<Integer> V_cc, final int Mode) {
    Vector<Integer> IS = new Vector<>();
    Vector<Integer> V_r = new Vector<>();
    Vector<Integer> V_c = new Vector<>();
    V_r.addAll(V_rr);
    V_c.addAll(V_cc);
    Vector<Integer> num_colors;
    Vector<Integer> V_r_aux = new Vector<>();
    Vector<Integer> V_c_aux = new Vector<>();
    V_r_aux.addAll(V_r);
    V_c_aux.addAll(V_c);
    GraphModel gaux = g.getCopy();
    float ratio = 1;

    if (Mode != 1) ratio = Mode / 2;

    Vector<Pair<Integer, Integer>> Degree_V_r_aux = new Vector<>();
    Vector<Pair<Integer, Integer>> Degree_V_c_aux = new Vector<>();
    Vector<Pair<Integer, Integer>> copy_real_r = new Vector<>();
    Vector<Pair<Integer, Integer>> copy_real_c = new Vector<>();
    Vector<Integer> forbiddenColors = new Vector<>(V_r.size());
    for (int i = 0; i < V_r.size(); i++) {
      forbiddenColors.add(-1);
    }

    Iterator<Integer> v_r_aux_it = V_r_aux.iterator();
    for (int v_r : V_r) {
      if (v_r_aux_it.hasNext()) {
        int v_r_aux = v_r_aux_it.next();
        copy_real_r.add(new Pair<>(v_r, v_r_aux));
      }
    }

    Iterator<Integer> v_c_aux_it = V_c_aux.iterator();
    for (int v_c : V_c) {
      if (v_c_aux_it.hasNext()) {
        int v_c_aux = v_c_aux_it.next();
        copy_real_c.add(new Pair<>(v_c, v_c_aux));
      }
    }

    for (int v_r : V_r_aux) {
      Degree_V_r_aux.add(new Pair<>(v_r, gaux.getDegree(gaux.getVertex(v_r))));
    }

    for (int v_c : V_c_aux) {
      Degree_V_c_aux.add(new Pair<>(v_c, gaux.getDegree(gaux.getVertex(v_c))));
    }

    while (gaux.getEdgesCount() > 0) {
      int max_degree_V_r_aux = 0;
      for (Pair<Integer, Integer> di : Degree_V_r_aux) {
        di.second = gaux.getDegree(gaux.getVertex(di.first));
        int degree_v_r = di.second;
        if (degree_v_r > max_degree_V_r_aux) {
          max_degree_V_r_aux = degree_v_r;
        }
      }
      System.out.println("1");

      int max_degree_V_c_aux = 0;
      for (Pair<Integer, Integer> di : Degree_V_c_aux) {
        di.second = gaux.getDegree(gaux.getVertex(di.first));
        int degree_v_c = di.second;
        if (degree_v_c > max_degree_V_c_aux) {
          max_degree_V_c_aux = degree_v_c;
        }
      }
      System.out.println("2");

      if (max_degree_V_r_aux > ratio * max_degree_V_c_aux) {
        Vector<Pair<Integer, Integer>> removedEdges = new Vector<>();
        for (Pair<Integer, Integer> di : Degree_V_r_aux) {
          if (max_degree_V_r_aux == di.second) {
            Pair<Integer, Integer> cr = new Pair<>(0, 0);
            for (Pair<Integer, Integer> crtmp : copy_real_r) {
              if (crtmp.second.equals(di.first)) {
                cr = crtmp;
                break;
              }
            }
            int v = 0;
            for (int tmp : V_r) {
              if (cr.first == v) {
                v = tmp;
                break;
              }
            }
            System.out.println("33");

            IndSet.clearVertex(gaux.getVertex(di.first), gaux);
            removedEdges.add(di);

            System.out.println("44");
            forbiddenColors.set(0, v);
            for (Vertex w : g.getNeighbors(g.getVertex(v))) {
              if (w.getColor() <= 0) {
                for (Vertex x : g.getNeighbors(w)) {
                  if (x.getColor() > 0) {
                    if (g.getEdge(w, g.getVertex(v)).getWeight() == 1
                        || g.getEdge(w, x).getWeight() == 1) {
                      forbiddenColors.set(x.getId(), v);
                    }
                  }
                }
              } else { // Color[w]>0
                for (Vertex x : g.getNeighbors(w)) {
                  if (x.getColor() > 0) {
                    if (g.getEdge(w, x).getWeight() == 1) {
                      for (Vertex y : g.getNeighbors(x)) {
                        if (y.getColor() > 0) {
                          if (w.getColor() == y.getColor() && w.getId() != y.getId()) {
                            forbiddenColors.set(x.getId(), v);
                          }
                        }
                      }
                    }
                  }
                }
              }
              System.out.println("45s");
            }
            System.out.printf("456");

            // Find first color which can be assigned to v_c
            for (int i = 0; i < forbiddenColors.size(); i++) {
              if (forbiddenColors.get(i) != v) {
                g.getVertex(v).setColor(forbiddenColors.get(i));
                break;
              }
            }
            System.out.println("500");
          }
        }
        Degree_V_r_aux.removeAll(removedEdges);
      } else {
        Vector<Pair<Integer, Integer>> removedEdges = new Vector<>();
        for (Pair<Integer, Integer> di : Degree_V_c_aux) {
          if (max_degree_V_c_aux == di.second) {
            Pair<Integer, Integer> cr = new Pair<>(0, 0);
            for (Pair<Integer, Integer> crtmp : copy_real_c) {
              if (crtmp.second == di.first) {
                cr = crtmp;
                break;
              }
            }
            int v = 0;
            for (int tmp : V_c) {
              if (cr.first == v) {
                v = tmp;
                break;
              }
            }

            IndSet.clearVertex(gaux.getVertex(di.first), gaux);
            removedEdges.add(di);

            System.out.println("3");
            forbiddenColors.set(0, v);
            System.out.println("3.0q" + v);
            for (Vertex w : g.getNeighbors(g.getVertex(v))) {
              System.out.println("3.1");
              if (w.getColor() <= 0) {
                for (Vertex x : g.getNeighbors(w)) {
                  if (x.getColor() > 0) {
                    if (g.getEdge(w, g.getVertex(v)).getWeight() == 1
                        || g.getEdge(w, x).getWeight() == 1) {
                      forbiddenColors.set(x.getId(), v);
                    }
                  }
                }
                System.out.println("3.2");

              } else { // Color[w]>0
                for (Vertex x : g.getNeighbors(w)) {
                  System.out.println("3.3");
                  if (x.getColor() > 0) {
                    if (g.getEdge(w, x).getWeight() == 1) {
                      for (Vertex y : g.getNeighbors(x)) {
                        if (y.getColor() > 0) {
                          if (w.getColor() == y.getColor() && w.getId() != y.getId()) {
                            forbiddenColors.set(x.getId(), v);
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
            System.out.println("3.5");

            // Find first color which can be assigned to v_c
            for (int i = 0; i < forbiddenColors.size(); i++) {
              if (forbiddenColors.get(i) != v) {
                g.getVertex(v).setColor(forbiddenColors.get(i));
                break;
              }
            }
          }
        }
        System.out.println("4");
        Degree_V_c_aux.removeAll(removedEdges);
      }
    }
    for (Pair<Integer, Integer> di : Degree_V_r_aux) {
      IS.add(di.first);
    }
    for (Pair<Integer, Integer> di : Degree_V_c_aux) {
      IS.add(di.first);
    }

    for (int i = 0; i < IS.size(); i++) {
      g.getVertex(IS.get(i)).setColor(0);
    }

    return getNumOfCols(g);
  }
Esempio n. 4
0
  public static boolean StarBicoloringDynamicOrderingRestricted(
      GraphModel g, Vector<Integer> V_r, Vector<Integer> V_c, int Ordering) {
    Vector<Integer> forbiddenColors = new Vector<>(V_r.size());
    for (int i = 0; i < V_r.size(); i++) forbiddenColors.add(-1);
    Vector<Integer> Vertices = new Vector<>(V_r.size() + V_c.size());

    // GraphModel gg = g.getCopy();
    for (int i = 0; i < V_r.size(); i++) {
      Vertices.add(g.getVertex(i).getId());
    }

    for (int i = 0; i < V_c.size(); i++) {
      Vertices.add(g.getVertex(i).getId());
    }

    if (Ordering != 0) {
      if (Ordering == 1) {
        Vertices = OrderingHeuristics.LFO(g, Vertices);
      }
      if (Ordering == 2) {
        Vertices = OrderingHeuristics.SLO(g, Vertices);
      }
      if (Ordering == 3) {
        Vertices = OrderingHeuristics.IDO(g, Vertices);
      }
    }

    for (int v : Vertices) {
      if (g.getVertex(v).getColor() != 0) {
        forbiddenColors.set(0, v);
        for (Vertex w : g.getNeighbors(g.getVertex(v))) {
          if (w.getColor() <= 0) {
            for (Vertex x : g.getNeighbors(w)) {
              if (x.getColor() > 0) {
                if (g.getEdge(g.getVertex(v), w).getWeight() == 1
                    || g.getEdge(x, w).getWeight() == 1) {
                  forbiddenColors.set(x.getColor(), v);
                }
              }
            }
          } else {
            for (Vertex x : g.getNeighbors(w)) {
              if (g.getEdge(x, w).getWeight() == 1) {
                if (x.getColor() > 0) {
                  for (Vertex y : g.getNeighbors(x)) {
                    if (y.getColor() > 0) {
                      if (w.getColor() == y.getColor() && w.getId() != y.getId()) {
                        forbiddenColors.set(x.getColor(), v);
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }

      for (int i = 0; i < forbiddenColors.size(); i++) {
        if (forbiddenColors.get(i) != v) g.getVertex(v).setColor(i);
      }
    }
    return true;
  }