OsiBranchingObject Class Reference
Abstract branching object base class. More...
#include <OsiBranchingObject.hpp>
Public Member Functions | |
| OsiBranchingObject () | |
| Default Constructor. | |
| OsiBranchingObject (OsiSolverInterface *solver, double value) | |
| Constructor. | |
| OsiBranchingObject (const OsiBranchingObject &) | |
| Copy constructor. | |
| OsiBranchingObject & | operator= (const OsiBranchingObject &rhs) |
| Assignment operator. | |
| virtual OsiBranchingObject * | clone () const =0 |
| Clone. | |
| virtual | ~OsiBranchingObject () |
| Destructor. | |
| int | numberBranches () const |
| The number of branch arms created for this branching object. | |
| int | numberBranchesLeft () const |
| The number of branch arms left for this branching object. | |
| void | setNumberBranchesLeft (int value) |
| Set the number of branch arms left for this branching object Just for forcing. | |
| void | decrementNumberBranchesLeft () |
| Decrement the number of branch arms left for this branching object. | |
| virtual double | branch (OsiSolverInterface *solver)=0 |
| Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state. | |
| virtual double | branch () |
| Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state. | |
| virtual bool | boundBranch () const |
| Return true if branch should fix variables. | |
| int | branchIndex () const |
| Get the state of the branching object This is just the branch index. | |
| void | setBranchingIndex (int branchIndex) |
| Set the state of the branching object. | |
| double | value () const |
| Current value. | |
| const OsiObject * | originalObject () const |
| Return pointer back to object which created. | |
| void | setOriginalObject (const OsiObject *object) |
| Set pointer back to object which created. | |
| int | columnNumber () const |
| For debug. | |
| virtual void | print (const OsiSolverInterface *solver=NULL) const |
| Print something about branch - only if log level high. | |
Protected Attributes | |
| double | value_ |
| Current value - has some meaning about branch. | |
| const OsiObject * | originalObject_ |
| Pointer back to object which created. | |
| int | numberBranches_ |
| Number of branches. | |
| short | branchIndex_ |
| The state of the branching object. | |
Detailed Description
Abstract branching object base class.
In the abstract, an OsiBranchingObject contains instructions for how to branch. We want an abstract class so that we can describe how to branch on simple objects (e.g., integers) and more exotic objects (e.g., cliques or hyperplanes).
The branch() method is the crucial routine: it is expected to be able to step through a set of branch arms, executing the actions required to create each subproblem in turn. The base class is primarily virtual to allow for a wide range of problem modifications.
See OsiObject for an overview of the two classes (OsiObject and OsiBranchingObject) which make up Osi's branching model.
Definition at line 247 of file OsiBranchingObject.hpp.
Constructor & Destructor Documentation
| OsiBranchingObject::OsiBranchingObject | ( | ) |
Default Constructor.
| OsiBranchingObject::OsiBranchingObject | ( | OsiSolverInterface * | solver, | |
| double | value | |||
| ) |
Constructor.
| OsiBranchingObject::OsiBranchingObject | ( | const OsiBranchingObject & | ) |
Copy constructor.
| virtual OsiBranchingObject::~OsiBranchingObject | ( | ) | [virtual] |
Destructor.
Member Function Documentation
| OsiBranchingObject& OsiBranchingObject::operator= | ( | const OsiBranchingObject & | rhs | ) |
Assignment operator.
Reimplemented in CbcLinkBranchingObject, CbcIntegerBranchingObject, CbcIntegerPseudoCostBranchingObject, CbcCliqueBranchingObject, CbcLongCliqueBranchingObject, CbcSOSBranchingObject, CbcNWayBranchingObject, CbcFixingBranchingObject, CbcDummyBranchingObject, CbcBranchingObject, CbcCutBranchingObject, CbcDynamicPseudoCostBranchingObject, CbcLotsizeBranchingObject, OsiOldLinkBranchingObject, OsiLinkBranchingObject, OsiBiLinearBranchingObject, OsiTwoWayBranchingObject, OsiIntegerBranchingObject, OsiSOSBranchingObject, and OsiLotsizeBranchingObject.
| virtual OsiBranchingObject* OsiBranchingObject::clone | ( | ) | const [pure virtual] |
Clone.
Implemented in CbcLinkBranchingObject, CbcIntegerBranchingObject, CbcIntegerPseudoCostBranchingObject, CbcCliqueBranchingObject, CbcLongCliqueBranchingObject, CbcSOSBranchingObject, CbcNWayBranchingObject, CbcFixingBranchingObject, CbcDummyBranchingObject, CbcBranchingObject, CbcCutBranchingObject, CbcDynamicPseudoCostBranchingObject, CbcLotsizeBranchingObject, OsiOldLinkBranchingObject, OsiLinkBranchingObject, OsiBiLinearBranchingObject, OsiIntegerBranchingObject, OsiSOSBranchingObject, and OsiLotsizeBranchingObject.
| int OsiBranchingObject::numberBranches | ( | ) | const [inline] |
The number of branch arms created for this branching object.
Reimplemented in CbcNWayBranchingObject.
Definition at line 270 of file OsiBranchingObject.hpp.
| int OsiBranchingObject::numberBranchesLeft | ( | ) | const [inline] |
The number of branch arms left for this branching object.
Definition at line 274 of file OsiBranchingObject.hpp.
| void OsiBranchingObject::setNumberBranchesLeft | ( | int | value | ) | [inline] |
Set the number of branch arms left for this branching object Just for forcing.
Definition at line 280 of file OsiBranchingObject.hpp.
| void OsiBranchingObject::decrementNumberBranchesLeft | ( | ) | [inline] |
Decrement the number of branch arms left for this branching object.
Definition at line 284 of file OsiBranchingObject.hpp.
| virtual double OsiBranchingObject::branch | ( | OsiSolverInterface * | solver | ) | [pure virtual] |
Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state.
Returns change in guessed objective on next branch
Implemented in CbcBranchingObject, OsiOldLinkBranchingObject, OsiLinkBranchingObject, OsiBiLinearBranchingObject, OsiTwoWayBranchingObject, OsiIntegerBranchingObject, OsiSOSBranchingObject, and OsiLotsizeBranchingObject.
| virtual double OsiBranchingObject::branch | ( | ) | [inline, virtual] |
Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state.
Returns change in guessed objective on next branch
Reimplemented in CbcLinkBranchingObject, CbcIntegerBranchingObject, CbcIntegerPseudoCostBranchingObject, CbcCliqueBranchingObject, CbcLongCliqueBranchingObject, CbcSOSBranchingObject, CbcNWayBranchingObject, CbcFixingBranchingObject, CbcDummyBranchingObject, CbcBranchingObject, CbcCutBranchingObject, CbcDynamicPseudoCostBranchingObject, and CbcLotsizeBranchingObject.
Definition at line 298 of file OsiBranchingObject.hpp.
| virtual bool OsiBranchingObject::boundBranch | ( | ) | const [inline, virtual] |
Return true if branch should fix variables.
Reimplemented in CbcCutBranchingObject, and OsiBiLinearBranchingObject.
Definition at line 301 of file OsiBranchingObject.hpp.
| int OsiBranchingObject::branchIndex | ( | ) | const [inline] |
Get the state of the branching object This is just the branch index.
Definition at line 306 of file OsiBranchingObject.hpp.
| void OsiBranchingObject::setBranchingIndex | ( | int | branchIndex | ) | [inline] |
Set the state of the branching object.
Definition at line 311 of file OsiBranchingObject.hpp.
| double OsiBranchingObject::value | ( | ) | const [inline] |
Current value.
Definition at line 315 of file OsiBranchingObject.hpp.
| const OsiObject* OsiBranchingObject::originalObject | ( | ) | const [inline] |
Return pointer back to object which created.
Definition at line 319 of file OsiBranchingObject.hpp.
| void OsiBranchingObject::setOriginalObject | ( | const OsiObject * | object | ) | [inline] |
Set pointer back to object which created.
Definition at line 322 of file OsiBranchingObject.hpp.
| int OsiBranchingObject::columnNumber | ( | ) | const |
For debug.
| virtual void OsiBranchingObject::print | ( | const OsiSolverInterface * | solver = NULL |
) | const [inline, virtual] |
Print something about branch - only if log level high.
Definition at line 328 of file OsiBranchingObject.hpp.
Member Data Documentation
double OsiBranchingObject::value_ [protected] |
Current value - has some meaning about branch.
Definition at line 333 of file OsiBranchingObject.hpp.
const OsiObject* OsiBranchingObject::originalObject_ [protected] |
Pointer back to object which created.
Definition at line 336 of file OsiBranchingObject.hpp.
int OsiBranchingObject::numberBranches_ [protected] |
Number of branches.
Definition at line 340 of file OsiBranchingObject.hpp.
short OsiBranchingObject::branchIndex_ [protected] |
The state of the branching object.
i.e. branch index This starts at 0 when created
Definition at line 345 of file OsiBranchingObject.hpp.
The documentation for this class was generated from the following file:
- /home/coin/svn-release/OptimizationSuite-1.1.0/Osi/src/OsiBranchingObject.hpp
