Ejemplo n.º 1
0
        LBDDNode BDDSAT()
        {
            nameId = new Dictionary <ColoredEdge, int>(); // i, об color

            GenerateVariables(n, colorNum);

            var order = nameId.Values.ToArray();

            bdd = new LBDD.LBDD(order);
            LBDDNode conj = bdd.One;

            //not one color in clique
            for (int c = 1; c <= colorNum; c++)
            {
                conj = bdd.AND(conj, GenerateCliqueNotOneColor(c));
            }

            //only one color of edge
            for (int i = 1; i < n; i++)
            {
                for (int j = i + 1; j <= n; j++)
                {
                    conj = bdd.AND(conj, OnlyOneColor(i, j));
                }
            }

            return(conj);
        }
Ejemplo n.º 2
0
Archivo: Test.cs Proyecto: IrinaLen/SAT
        public LBDDNode BDDSAT(int n, int color)
        {
            nameId = new Dictionary <coloredEdge, int>(); // i, об color

            int counter = 1;

            for (int c = 1; c <= color; c++)
            {
                for (int i = 1; i < n; i++)
                {
                    for (int j = i + 1; j <= n; j++)
                    {
                        nameId.Add(new coloredEdge(i, j, c), counter);
                        counter++;
                    }
                }
            }
            var order = nameId.Values.ToArray();

            bdd = new LBDD.LBDD(order);
            LBDDNode conj = bdd.One;

            //only one color of edge
            for (int i = 1; i < n; i++)
            {
                for (int j = i + 1; j <= n; j++)
                {
                    conj = bdd.AND(conj, OnlyOneColor(i, j, color));
                }
            }


            //not one color in clique
            for (int c = 1; c <= color; c++)
            {
                for (int i = 1; i < n - 1; i++)
                {
                    for (int j = i + 1; j < n; j++)
                    {
                        for (int k = j + 1; k <= n; k++)
                        {
                            var e1     = bdd.CreateVar(nameId[new coloredEdge(i, j, c)]);
                            var e2     = bdd.CreateVar(nameId[new coloredEdge(i, k, c)]);
                            var e3     = bdd.CreateVar(nameId[new coloredEdge(j, k, c)]);
                            var local1 = color < 3 ? bdd.OR(e1, bdd.OR(e2, e3)) : bdd.One;
                            var local2 = bdd.OR(bdd.NOT(e1), bdd.OR(bdd.NOT(e2), bdd.NOT(e3)));

                            //Console.WriteLine(i + ", " + j + ", " + k + " color=" + c);
                            conj = bdd.AND(conj, bdd.AND(local1, local2));
                        }
                    }
                }
            }



            return(conj);
        }