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# /home/coin/svn-release/Blis-0.93.2/Blis/src/BlisBranchStrategyBilevel.h

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    00001 /*===========================================================================*
    00002  * This file is part of the BiCePS Linear Integer Solver (BLIS).             *
    00003  *                                                                           *
    00004  * ALPS is distributed under the Eclipse Public License as part of the       *
    00005  * COIN-OR repository (http://www.coin-or.org).                              *
    00006  *                                                                           *
    00007  * Authors:                                                                  *
    00008  *                                                                           *
    00009  *          Yan Xu, Lehigh University                                        *
    00010  *          Ted Ralphs, Lehigh University                                    *
    00011  *                                                                           *
    00012  * Conceptual Design:                                                        *
    00013  *                                                                           *
    00014  *          Yan Xu, Lehigh University                                        *
    00015  *          Ted Ralphs, Lehigh University                                    *
    00016  *          Laszlo Ladanyi, IBM T.J. Watson Research Center                  *
    00017  *          Matthew Saltzman, Clemson University                             *
    00018  *                                                                           *
    00019  *                                                                           *
    00020  * Copyright (C) 2001-2011, Lehigh University, Yan Xu, and Ted Ralphs.       *
    00021  * All Rights Reserved.                                                      *
    00022  *===========================================================================*/
    00023
    00024 #ifndef BlisBranchStrategyBilevel_h_
    00025 #define BlisBranchStrategyBilevel_h_
    00026
    00027 #include "BcpsBranchObject.h"
    00028 #include "BcpsBranchStrategy.h"
    00029 #include "BlisModel.h"
    00030
    00032 class BlisBranchStrategyBilevel : public BcpsBranchStrategy {
    00033
    00034  private:
    00035
    00037     BlisBranchStrategyBilevel& operator=(const BlisBranchStrategyBilevel& rhs);
    00038
    00039  public:
    00040
    00042     BlisBranchStrategyBilevel(){
    00043         type_ = static_cast<int>(BlisBranchingStrategyBilevel);
    00044     }
    00045
    00047     BlisBranchStrategyBilevel(BlisModel *model) : BcpsBranchStrategy(model) {
    00048         type_ = static_cast<int>(BlisBranchingStrategyBilevel);
    00049     }
    00050
    00052     virtual ~BlisBranchStrategyBilevel() {}
    00053
    00055     BlisBranchStrategyBilevel(const BlisBranchStrategyBilevel &);
    00056
    00058     virtual BcpsBranchStrategy * clone() const {
    00059         return new BlisBranchStrategyBilevel(*this);
    00060     }
    00061
    00063     virtual int createCandBranchObjects(int numPassesLeft, double ub);
    00064
    00070     virtual int betterBranchObject(BcpsBranchObject * thisOne,
    00071                                    BcpsBranchObject * bestSoFar);
    00072 };
    00073
    00074 #endif