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Diffstat (limited to 'build/Bonmin/include/coin/CbcBranchDefaultDecision.hpp')
-rw-r--r-- | build/Bonmin/include/coin/CbcBranchDefaultDecision.hpp | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/build/Bonmin/include/coin/CbcBranchDefaultDecision.hpp b/build/Bonmin/include/coin/CbcBranchDefaultDecision.hpp deleted file mode 100644 index d45035e..0000000 --- a/build/Bonmin/include/coin/CbcBranchDefaultDecision.hpp +++ /dev/null @@ -1,100 +0,0 @@ -// $Id: CbcBranchDefaultDecision.hpp 1899 2013-04-09 18:12:08Z stefan $ -// Copyright (C) 2002, International Business Machines -// Corporation and others. All Rights Reserved. -// This code is licensed under the terms of the Eclipse Public License (EPL). - -// Edwin 11/10/2009-- carved out of CbcBranchActual - -#ifndef CbcBranchDefaultDecision_H -#define CbcBranchDefaultDecision_H - -#include "CbcBranchBase.hpp" -/** Branching decision default class - - This class implements a simple default algorithm - (betterBranch()) for choosing a branching variable. -*/ - -class CbcBranchDefaultDecision : public CbcBranchDecision { -public: - // Default Constructor - CbcBranchDefaultDecision (); - - // Copy constructor - CbcBranchDefaultDecision ( const CbcBranchDefaultDecision &); - - virtual ~CbcBranchDefaultDecision(); - - /// Clone - virtual CbcBranchDecision * clone() const; - - /// Initialize, <i>e.g.</i> before the start of branch selection at a node - virtual void initialize(CbcModel * model); - - /** \brief Compare two branching objects. Return nonzero if \p thisOne is - better than \p bestSoFar. - - The routine compares branches using the values supplied in \p numInfUp and - \p numInfDn until a solution is found by search, after which it uses the - values supplied in \p changeUp and \p changeDn. The best branching object - seen so far and the associated parameter values are remembered in the - \c CbcBranchDefaultDecision object. The nonzero return value is +1 if the - up branch is preferred, -1 if the down branch is preferred. - - As the names imply, the assumption is that the values supplied for - \p numInfUp and \p numInfDn will be the number of infeasibilities reported - by the branching object, and \p changeUp and \p changeDn will be the - estimated change in objective. Other measures can be used if desired. - - Because an \c CbcBranchDefaultDecision object remembers the current best - branching candidate (#bestObject_) as well as the values used in the - comparison, the parameter \p bestSoFar is redundant, hence unused. - */ - virtual int betterBranch(CbcBranchingObject * thisOne, - CbcBranchingObject * bestSoFar, - double changeUp, int numInfUp, - double changeDn, int numInfDn); - /** Sets or gets best criterion so far */ - virtual void setBestCriterion(double value); - virtual double getBestCriterion() const; - - /** \brief Compare N branching objects. Return index of best - and sets way of branching in chosen object. - - This routine is used only after strong branching. - */ - - virtual int - bestBranch (CbcBranchingObject ** objects, int numberObjects, int numberUnsatisfied, - double * changeUp, int * numberInfeasibilitiesUp, - double * changeDown, int * numberInfeasibilitiesDown, - double objectiveValue) ; -private: - - /// Illegal Assignment operator - CbcBranchDefaultDecision & operator=(const CbcBranchDefaultDecision& rhs); - - /// data - - /// "best" so far - double bestCriterion_; - - /// Change up for best - double bestChangeUp_; - - /// Number of infeasibilities for up - int bestNumberUp_; - - /// Change down for best - double bestChangeDown_; - - /// Pointer to best branching object - CbcBranchingObject * bestObject_; - - /// Number of infeasibilities for down - int bestNumberDown_; - -}; - -#endif - |