Interface between Cbc and Cut Generation Library. More...
#include <CbcCutGenerator.hpp>
Public Member Functions | |
Generate Cuts | |
bool | generateCuts (OsiCuts &cs, int fullScan, OsiSolverInterface *solver, CbcNode *node) |
Generate cuts for the client model. | |
Constructors and destructors | |
CbcCutGenerator () | |
Default constructor. | |
CbcCutGenerator (CbcModel *model, CglCutGenerator *generator, int howOften=1, const char *name=NULL, bool normal=true, bool atSolution=false, bool infeasible=false, int howOftenInsub=-100, int whatDepth=-1, int whatDepthInSub=-1, int switchOffIfLessThan=0) | |
Normal constructor. | |
CbcCutGenerator (const CbcCutGenerator &) | |
Copy constructor. | |
CbcCutGenerator & | operator= (const CbcCutGenerator &rhs) |
Assignment operator. | |
~CbcCutGenerator () | |
Destructor. | |
Gets and sets | |
void | refreshModel (CbcModel *model) |
Set the client model. | |
const char * | cutGeneratorName () const |
return name of generator | |
void | setHowOften (int value) |
Set the cut generation interval. | |
int | howOften () const |
Get the cut generation interval. | |
int | howOftenInSub () const |
Get the cut generation interval.in sub tree. | |
int | inaccuracy () const |
Get level of cut inaccuracy (0 means exact e.g. cliques). | |
void | setInaccuracy (int level) |
Set level of cut inaccuracy (0 means exact e.g. cliques). | |
void | setWhatDepth (int value) |
Set the cut generation depth. | |
void | setWhatDepthInSub (int value) |
Set the cut generation depth in sub tree. | |
int | whatDepth () const |
Get the cut generation depth criterion. | |
int | whatDepthInSub () const |
Get the cut generation depth criterion.in sub tree. | |
bool | normal () const |
Get whether the cut generator should be called in the normal place. | |
void | setNormal (bool value) |
Set whether the cut generator should be called in the normal place. | |
bool | atSolution () const |
Get whether the cut generator should be called when a solution is found. | |
void | setAtSolution (bool value) |
Set whether the cut generator should be called when a solution is found. | |
bool | whenInfeasible () const |
Get whether the cut generator should be called when the subproblem is found to be infeasible. | |
void | setWhenInfeasible (bool value) |
Set whether the cut generator should be called when the subproblem is found to be infeasible. | |
bool | timing () const |
Get whether the cut generator is being timed. | |
void | setTiming (bool value) |
Set whether the cut generator is being timed. | |
double | timeInCutGenerator () const |
Return time taken in cut generator. | |
void | incrementTimeInCutGenerator (double value) |
Set the client model. | |
CglCutGenerator * | generator () const |
Get the CglCutGenerator corresponding to this CbcCutGenerator . | |
int | numberTimesEntered () const |
Number times cut generator entered. | |
void | setNumberTimesEntered (int value) |
Set the client model. | |
void | incrementNumberTimesEntered (int value=1) |
Set the client model. | |
int | numberCutsInTotal () const |
Total number of cuts added. | |
void | setNumberCutsInTotal (int value) |
Set the client model. | |
void | incrementNumberCutsInTotal (int value=1) |
Set the client model. | |
int | numberColumnCuts () const |
Total number of column cuts. | |
void | setNumberColumnCuts (int value) |
Set the client model. | |
void | incrementNumberColumnCuts (int value=1) |
Set the client model. | |
int | numberCutsActive () const |
Total number of cuts active after (at end of n cut passes at each node). | |
void | setNumberCutsActive (int value) |
Set the client model. | |
void | incrementNumberCutsActive (int value=1) |
Set the client model. | |
void | setSwitchOffIfLessThan (int value) |
Set the client model. | |
int | switchOffIfLessThan () const |
Set the client model. | |
bool | needsOptimalBasis () const |
Say if optimal basis needed. | |
bool | mustCallAgain () const |
Whether generator MUST be called again if any cuts (i.e. ignore break from loop). | |
void | setMustCallAgain (bool yesNo) |
Set whether generator MUST be called again if any cuts (i.e. ignore break from loop). | |
bool | switchedOff () const |
Whether generator switched off for moment. | |
void | setSwitchedOff (bool yesNo) |
Set whether generator switched off for moment. | |
int | numberCutsAtRoot () const |
Number of cuts generated at root. | |
void | setNumberCutsAtRoot (int value) |
Set the client model. | |
int | numberActiveCutsAtRoot () const |
Number of cuts active at root. | |
void | setNumberActiveCutsAtRoot (int value) |
Set the client model. | |
void | setModel (CbcModel *model) |
Set model. | |
Private Attributes | |
CbcModel * | model_ |
The client model. | |
CglCutGenerator * | generator_ |
int | whenCutGenerator_ |
Number of nodes between calls to the CglCutGenerator::generateCuts routine. | |
int | whenCutGeneratorInSub_ |
Number of nodes between calls to the CglCutGenerator::generateCuts routine in sub tree. | |
int | switchOffIfLessThan_ |
If first pass at root produces fewer than this cuts then switch off. | |
int | depthCutGenerator_ |
Depth at which to call the CglCutGenerator::generateCuts routine (If >0 then overrides when and is called if depthdepthCutGenerator==0). | |
int | depthCutGeneratorInSub_ |
Depth at which to call the CglCutGenerator::generateCuts routine (If >0 then overrides when and is called if depthdepthCutGenerator==0). | |
char * | generatorName_ |
Name of generator. | |
bool | normal_ |
Whether to call the generator in the normal place. | |
bool | atSolution_ |
Whether to call the generator when a new solution is found. | |
bool | whenInfeasible_ |
Whether to call generator when a subproblem is found to be infeasible. | |
bool | mustCallAgain_ |
Whether generator MUST be called again if any cuts (i.e. ignore break from loop). | |
bool | switchedOff_ |
Temporary switch off marker. | |
bool | globalCutsAtRoot_ |
Create global cuts (at root). | |
bool | timing_ |
Whether call generator being timed. | |
double | timeInCutGenerator_ |
Time in cut generator. | |
int | inaccuracy_ |
Level of cut inaccuracy (0 means exact e.g. cliques). | |
int | numberTimes_ |
Number times cut generator entered. | |
int | numberCuts_ |
Total number of cuts added. | |
int | numberColumnCuts_ |
Total number of column cuts added. | |
int | numberCutsActive_ |
Total number of cuts active after (at end of n cut passes at each node). | |
int | numberCutsAtRoot_ |
Number of cuts generated at root. | |
int | numberActiveCutsAtRoot_ |
Number of cuts active at root. |
Interface between Cbc and Cut Generation Library.
CbcCutGenerator
is intended to provide an intelligent interface between Cbc and the cutting plane algorithms in the CGL. A CbcCutGenerator
is bound to a CglCutGenerator
and to an CbcModel
. It contains parameters which control when and how the generateCuts
method of the CglCutGenerator
will be called.
The builtin decision criteria available to use when deciding whether to generate cuts are limited: every X nodes, when a solution is found, and when a subproblem is found to be infeasible. The idea is that the class will grow more intelligent with time.
generateCuts
method. Create a default decision method that looks at the builtin criteria.Definition at line 45 of file CbcCutGenerator.hpp.
CbcCutGenerator::CbcCutGenerator | ( | ) |
Default constructor.
CbcCutGenerator::CbcCutGenerator | ( | CbcModel * | model, | |
CglCutGenerator * | generator, | |||
int | howOften = 1 , |
|||
const char * | name = NULL , |
|||
bool | normal = true , |
|||
bool | atSolution = false , |
|||
bool | infeasible = false , |
|||
int | howOftenInsub = -100 , |
|||
int | whatDepth = -1 , |
|||
int | whatDepthInSub = -1 , |
|||
int | switchOffIfLessThan = 0 | |||
) |
Normal constructor.
CbcCutGenerator::CbcCutGenerator | ( | const CbcCutGenerator & | ) |
Copy constructor.
CbcCutGenerator::~CbcCutGenerator | ( | ) |
Destructor.
bool CbcCutGenerator::generateCuts | ( | OsiCuts & | cs, | |
int | fullScan, | |||
OsiSolverInterface * | solver, | |||
CbcNode * | node | |||
) |
Generate cuts for the client model.
Evaluate the state of the client model and decide whether to generate cuts. The generated cuts are inserted into and returned in the collection of cuts cs
.
If fullScan
is >0, the generator is obliged to call the CGL generateCuts
routine. Otherwise, it is free to make a local decision. The current implementation uses whenCutGenerator_
to decide.
The routine returns true if reoptimisation is needed (because the state of the solver interface has been modified).
If node then can find out depth
CbcCutGenerator& CbcCutGenerator::operator= | ( | const CbcCutGenerator & | rhs | ) |
Assignment operator.
void CbcCutGenerator::refreshModel | ( | CbcModel * | model | ) |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
const char* CbcCutGenerator::cutGeneratorName | ( | ) | const [inline] |
return name of generator
Definition at line 103 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setHowOften | ( | int | value | ) |
Set the cut generation interval.
Set the number of nodes evaluated between calls to the Cgl object's generateCuts
routine.
If value
is positive, cuts will always be generated at the specified interval. If value
is negative, cuts will initially be generated at the specified interval, but Cbc may adjust the value depending on the success of cuts produced by this generator.
A value of -100 disables the generator, while a value of -99 means just at root.
int CbcCutGenerator::howOften | ( | ) | const [inline] |
Get the cut generation interval.
Definition at line 123 of file CbcCutGenerator.hpp.
int CbcCutGenerator::howOftenInSub | ( | ) | const [inline] |
Get the cut generation interval.in sub tree.
Definition at line 126 of file CbcCutGenerator.hpp.
int CbcCutGenerator::inaccuracy | ( | ) | const [inline] |
Get level of cut inaccuracy (0 means exact e.g. cliques).
Definition at line 129 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setInaccuracy | ( | int | level | ) | [inline] |
Set level of cut inaccuracy (0 means exact e.g. cliques).
Definition at line 132 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setWhatDepth | ( | int | value | ) |
Set the cut generation depth.
Set the depth criterion for calls to the Cgl object's generateCuts
routine. Only active if > 0.
If whenCutGenerator is positive and this is positive then this overrides. If whenCutGenerator is -1 then this is used as criterion if any cuts were generated at root node. If whenCutGenerator is anything else this is ignored.
void CbcCutGenerator::setWhatDepthInSub | ( | int | value | ) |
Set the cut generation depth in sub tree.
int CbcCutGenerator::whatDepth | ( | ) | const [inline] |
Get the cut generation depth criterion.
Definition at line 149 of file CbcCutGenerator.hpp.
int CbcCutGenerator::whatDepthInSub | ( | ) | const [inline] |
Get the cut generation depth criterion.in sub tree.
Definition at line 152 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::normal | ( | ) | const [inline] |
Get whether the cut generator should be called in the normal place.
Definition at line 156 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNormal | ( | bool | value | ) | [inline] |
Set whether the cut generator should be called in the normal place.
Definition at line 159 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::atSolution | ( | ) | const [inline] |
Get whether the cut generator should be called when a solution is found.
Definition at line 162 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setAtSolution | ( | bool | value | ) | [inline] |
Set whether the cut generator should be called when a solution is found.
Definition at line 165 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::whenInfeasible | ( | ) | const [inline] |
Get whether the cut generator should be called when the subproblem is found to be infeasible.
Definition at line 170 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setWhenInfeasible | ( | bool | value | ) | [inline] |
Set whether the cut generator should be called when the subproblem is found to be infeasible.
Definition at line 175 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::timing | ( | ) | const [inline] |
Get whether the cut generator is being timed.
Definition at line 178 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setTiming | ( | bool | value | ) | [inline] |
Set whether the cut generator is being timed.
Definition at line 181 of file CbcCutGenerator.hpp.
double CbcCutGenerator::timeInCutGenerator | ( | ) | const [inline] |
Return time taken in cut generator.
Definition at line 184 of file CbcCutGenerator.hpp.
void CbcCutGenerator::incrementTimeInCutGenerator | ( | double | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 186 of file CbcCutGenerator.hpp.
CglCutGenerator* CbcCutGenerator::generator | ( | ) | const [inline] |
Get the CglCutGenerator
corresponding to this CbcCutGenerator
.
Definition at line 189 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberTimesEntered | ( | ) | const [inline] |
Number times cut generator entered.
Definition at line 192 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberTimesEntered | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 194 of file CbcCutGenerator.hpp.
void CbcCutGenerator::incrementNumberTimesEntered | ( | int | value = 1 |
) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 196 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCutsInTotal | ( | ) | const [inline] |
Total number of cuts added.
Definition at line 199 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberCutsInTotal | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 201 of file CbcCutGenerator.hpp.
void CbcCutGenerator::incrementNumberCutsInTotal | ( | int | value = 1 |
) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 203 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberColumnCuts | ( | ) | const [inline] |
Total number of column cuts.
Definition at line 206 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberColumnCuts | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 208 of file CbcCutGenerator.hpp.
void CbcCutGenerator::incrementNumberColumnCuts | ( | int | value = 1 |
) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 210 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCutsActive | ( | ) | const [inline] |
Total number of cuts active after (at end of n cut passes at each node).
Definition at line 213 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberCutsActive | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 215 of file CbcCutGenerator.hpp.
void CbcCutGenerator::incrementNumberCutsActive | ( | int | value = 1 |
) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 217 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setSwitchOffIfLessThan | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 219 of file CbcCutGenerator.hpp.
int CbcCutGenerator::switchOffIfLessThan | ( | ) | const [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 221 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::needsOptimalBasis | ( | ) | const [inline] |
Say if optimal basis needed.
Definition at line 224 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::mustCallAgain | ( | ) | const [inline] |
Whether generator MUST be called again if any cuts (i.e. ignore break from loop).
Definition at line 227 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setMustCallAgain | ( | bool | yesNo | ) | [inline] |
Set whether generator MUST be called again if any cuts (i.e. ignore break from loop).
Definition at line 230 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::switchedOff | ( | ) | const [inline] |
Whether generator switched off for moment.
Definition at line 233 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setSwitchedOff | ( | bool | yesNo | ) | [inline] |
Set whether generator switched off for moment.
Definition at line 236 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCutsAtRoot | ( | ) | const [inline] |
Number of cuts generated at root.
Definition at line 239 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberCutsAtRoot | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 241 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberActiveCutsAtRoot | ( | ) | const [inline] |
Number of cuts active at root.
Definition at line 244 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setNumberActiveCutsAtRoot | ( | int | value | ) | [inline] |
Set the client model.
In addition to setting the client model, refreshModel also calls the refreshSolver
method of the CglCutGenerator object.
Definition at line 246 of file CbcCutGenerator.hpp.
void CbcCutGenerator::setModel | ( | CbcModel * | model | ) | [inline] |
Set model.
Definition at line 249 of file CbcCutGenerator.hpp.
CbcModel* CbcCutGenerator::model_ [private] |
The client model.
Definition at line 255 of file CbcCutGenerator.hpp.
CglCutGenerator* CbcCutGenerator::generator_ [private] |
Definition at line 258 of file CbcCutGenerator.hpp.
int CbcCutGenerator::whenCutGenerator_ [private] |
Number of nodes between calls to the CglCutGenerator::generateCuts routine.
Definition at line 263 of file CbcCutGenerator.hpp.
int CbcCutGenerator::whenCutGeneratorInSub_ [private] |
Number of nodes between calls to the CglCutGenerator::generateCuts routine in sub tree.
Definition at line 267 of file CbcCutGenerator.hpp.
int CbcCutGenerator::switchOffIfLessThan_ [private] |
If first pass at root produces fewer than this cuts then switch off.
Definition at line 270 of file CbcCutGenerator.hpp.
int CbcCutGenerator::depthCutGenerator_ [private] |
Depth at which to call the CglCutGenerator::generateCuts routine (If >0 then overrides when and is called if depthdepthCutGenerator==0).
Definition at line 275 of file CbcCutGenerator.hpp.
int CbcCutGenerator::depthCutGeneratorInSub_ [private] |
Depth at which to call the CglCutGenerator::generateCuts routine (If >0 then overrides when and is called if depthdepthCutGenerator==0).
In sub tree.
Definition at line 281 of file CbcCutGenerator.hpp.
char* CbcCutGenerator::generatorName_ [private] |
Name of generator.
Definition at line 284 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::normal_ [private] |
Whether to call the generator in the normal place.
Definition at line 287 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::atSolution_ [private] |
Whether to call the generator when a new solution is found.
Definition at line 290 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::whenInfeasible_ [private] |
Whether to call generator when a subproblem is found to be infeasible.
Definition at line 293 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::mustCallAgain_ [private] |
Whether generator MUST be called again if any cuts (i.e. ignore break from loop).
Definition at line 295 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::switchedOff_ [private] |
Temporary switch off marker.
Definition at line 297 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::globalCutsAtRoot_ [private] |
Create global cuts (at root).
Definition at line 299 of file CbcCutGenerator.hpp.
bool CbcCutGenerator::timing_ [private] |
Whether call generator being timed.
Definition at line 301 of file CbcCutGenerator.hpp.
double CbcCutGenerator::timeInCutGenerator_ [private] |
Time in cut generator.
Definition at line 303 of file CbcCutGenerator.hpp.
int CbcCutGenerator::inaccuracy_ [private] |
Level of cut inaccuracy (0 means exact e.g. cliques).
Definition at line 305 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberTimes_ [private] |
Number times cut generator entered.
Definition at line 307 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCuts_ [private] |
Total number of cuts added.
Definition at line 309 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberColumnCuts_ [private] |
Total number of column cuts added.
Definition at line 311 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCutsActive_ [private] |
Total number of cuts active after (at end of n cut passes at each node).
Definition at line 313 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberCutsAtRoot_ [private] |
Number of cuts generated at root.
Definition at line 315 of file CbcCutGenerator.hpp.
int CbcCutGenerator::numberActiveCutsAtRoot_ [private] |
Number of cuts active at root.
Definition at line 317 of file CbcCutGenerator.hpp.