CbcBranchUser.hpp
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1 // Copyright (C) 2002, International Business Machines
2 // Corporation and others. All Rights Reserved.
3 #ifndef CbcBranchUser_H
4 #define CbcBranchUser_H
5 
6 #include "CbcBranchBase.hpp"
7 #include "CbcBranchActual.hpp"
8 
12 public:
13  // Default Constructor
15 
16  // Copy constructor
18 
19  virtual ~CbcBranchUserDecision();
20 
22  virtual CbcBranchDecision * clone() const;
23 
25  virtual void initialize(CbcModel * model);
26 
34  virtual int betterBranch(CbcBranchingObject * thisOne,
35  CbcBranchingObject * bestSoFar,
36  double changeUp, int numberInfeasibilitiesUp,
37  double changeDown, int numberInfeasibilitiesDown);
38 
46  virtual int
47  bestBranch (CbcBranchingObject ** objects, int numberObjects, int numberUnsatisfied,
48  double * changeUp, int * numberInfeasibilitiesUp,
49  double * changeDown, int * numberInfeasibilitiesDown,
50  double objectiveValue) ;
51 private:
52 
55 
56 };
57 
59 
60 
62 
63 public:
64 
65  // Default Constructor
67 
68  // Useful constructor - passed integer index and model index
69  CbcSimpleIntegerFixed (CbcModel * model, int iColumn, double breakEven=0.5);
70 
71  // Constructor from simple
72  CbcSimpleIntegerFixed (const CbcSimpleInteger & simple);
73 
74  // Copy constructor
76 
78  virtual CbcObject * clone() const;
79 
80  // Assignment operator
82 
83  // Destructor
85 
87  virtual double infeasibility(int & preferredWay) const;
88 
93  //virtual CbcBranchingObject * createBranch(int way) ;
99  virtual CbcBranchingObject * createBranch(OsiSolverInterface * solver,
100  const OsiBranchingInformation * info, int way) ;
101 
102 protected:
104 };
105 
106 #endif
Abstract branching object base class Now just difference with OsiBranchingObject. ...
virtual CbcObject * clone() const
Clone.
Define a single integer class.
virtual CbcBranchDecision * clone() const
Clone.
virtual int bestBranch(CbcBranchingObject **objects, int numberObjects, int numberUnsatisfied, double *changeUp, int *numberInfeasibilitiesUp, double *changeDown, int *numberInfeasibilitiesDown, double objectiveValue)
Compare N branching objects.
CbcSimpleIntegerFixed & operator=(const CbcSimpleIntegerFixed &rhs)
virtual void initialize(CbcModel *model)
Initialize i.e. before start of choosing at a node.
int preferredWay() const
If -1 down always chosen first, +1 up always, 0 normal.
Definition: CbcObject.hpp:235
virtual int betterBranch(CbcBranchingObject *thisOne, CbcBranchingObject *bestSoFar, double changeUp, int numberInfeasibilitiesUp, double changeDown, int numberInfeasibilitiesDown)
Returns nonzero if branching on first object is "better" than on second (if second NULL first wins)...
virtual double infeasibility(int &preferredWay) const
Infeasibility - large is 0.5.
Branching decision user class.
Define a single integer class where branching is forced until fixed.
virtual ~CbcBranchUserDecision()
CbcModel * model() const
Return model.
Definition: CbcObject.hpp:230
virtual CbcBranchingObject * createBranch(OsiSolverInterface *solver, const OsiBranchingInformation *info, int way)
Creates a branching object.
CbcBranchUserDecision & operator=(const CbcBranchUserDecision &rhs)
Illegal Assignment operator.
Simple Branch and bound class.
Definition: CbcModel.hpp:98
double breakEven() const
Breakeven e.g 0.7 -> >= 0.7 go up first.