CbcBranchCut Class Reference
Define a cut branching class. More...
#include <CbcBranchCut.hpp>
Public Member Functions | |
| CbcBranchCut () | |
| CbcBranchCut (CbcModel *model) | |
| In to maintain normal methods. | |
| CbcBranchCut (const CbcBranchCut &) | |
| virtual CbcObject * | clone () const |
| Clone. | |
| CbcBranchCut & | operator= (const CbcBranchCut &rhs) |
| Assignment operator. | |
| ~CbcBranchCut () | |
| virtual double | infeasibility (int &preferredWay) const |
| Infeasibility. | |
| virtual void | feasibleRegion () |
| Set bounds to contain the current solution. | |
| virtual bool | boundBranch () const |
| Return true if branch created by object should fix variables. | |
| virtual CbcBranchingObject * | createBranch (int way) |
| Creates a branching object. | |
| virtual CbcBranchingObject * | preferredNewFeasible () const |
| Given a valid solution (with reduced costs, etc. | |
| virtual CbcBranchingObject * | notPreferredNewFeasible () const |
| Given a valid solution (with reduced costs, etc. | |
| virtual void | resetBounds () |
| Reset original upper and lower bound values from the solver. | |
Detailed Description
Define a cut branching class.
At present empty - all stuff in descendants
Definition at line 14 of file CbcBranchCut.hpp.
Constructor & Destructor Documentation
| CbcBranchCut::CbcBranchCut | ( | ) |
| CbcBranchCut::CbcBranchCut | ( | CbcModel * | model | ) |
In to maintain normal methods.
| CbcBranchCut::CbcBranchCut | ( | const CbcBranchCut & | ) |
| CbcBranchCut::~CbcBranchCut | ( | ) |
Member Function Documentation
| virtual CbcObject* CbcBranchCut::clone | ( | ) | const [virtual] |
| CbcBranchCut& CbcBranchCut::operator= | ( | const CbcBranchCut & | rhs | ) |
Assignment operator.
Reimplemented from CbcObject.
Reimplemented in CbcBranchToFixLots, and CbcBranchAllDifferent.
| virtual double CbcBranchCut::infeasibility | ( | int & | preferredWay | ) | const [virtual] |
Infeasibility.
Implements CbcObject.
Reimplemented in CbcBranchToFixLots, and CbcBranchAllDifferent.
| virtual void CbcBranchCut::feasibleRegion | ( | ) | [virtual] |
Set bounds to contain the current solution.
More precisely, for the variable associated with this object, take the value given in the current solution, force it within the current bounds if required, then set the bounds to fix the variable at the integer nearest the solution value.
At present this will do nothing
Implements CbcObject.
| virtual bool CbcBranchCut::boundBranch | ( | ) | const [virtual] |
Return true if branch created by object should fix variables.
Reimplemented from OsiObject.
| virtual CbcBranchingObject* CbcBranchCut::createBranch | ( | int | way | ) | [virtual] |
Creates a branching object.
Implements CbcObject.
Reimplemented in CbcBranchToFixLots, and CbcBranchAllDifferent.
| virtual CbcBranchingObject* CbcBranchCut::preferredNewFeasible | ( | ) | const [virtual] |
Given a valid solution (with reduced costs, etc.
), return a branching object which would give a new feasible point in the good direction.
The preferred branching object will force the variable to be +/-1 from its current value, depending on the reduced cost and objective sense. If movement in the direction which improves the objective is impossible due to bounds on the variable, the branching object will move in the other direction. If no movement is possible, the method returns NULL.
Only the bounds on this variable are considered when determining if the new point is feasible.
At present this does nothing
Reimplemented from CbcObject.
| virtual CbcBranchingObject* CbcBranchCut::notPreferredNewFeasible | ( | ) | const [virtual] |
Given a valid solution (with reduced costs, etc.
), return a branching object which would give a new feasible point in a bad direction.
As for preferredNewFeasible(), but the preferred branching object will force movement in a direction that degrades the objective.
At present this does nothing
Reimplemented from CbcObject.
| virtual void CbcBranchCut::resetBounds | ( | ) | [virtual] |
Reset original upper and lower bound values from the solver.
Handy for updating bounds held in this object after bounds held in the solver have been tightened.
The documentation for this class was generated from the following file:
- /home/coin/svn-release/OptimizationSuite-1.1.0/Cbc/src/CbcBranchCut.hpp
