Cgl
0.59.9
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Zero Half Cut Generator Class. More...
#include <CglZeroHalf.hpp>
Public Member Functions | |
Generate Cuts | |
virtual void | generateCuts (const OsiSolverInterface &si, OsiCuts &cs, const CglTreeInfo info=CglTreeInfo()) |
Generate zero half cuts for the model accessed through the solver interface. More... | |
Sets and Gets | |
int | getFlags () const |
Get flags. More... | |
void | setFlags (int value) |
Set flags. More... | |
Constructors and destructors | |
CglZeroHalf () | |
Default constructor. More... | |
CglZeroHalf (const CglZeroHalf &) | |
Copy constructor. More... | |
virtual CglCutGenerator * | clone () const |
Clone. More... | |
CglZeroHalf & | operator= (const CglZeroHalf &rhs) |
Assignment operator. More... | |
virtual | ~CglZeroHalf () |
Destructor. More... | |
virtual std::string | generateCpp (FILE *fp) |
Create C++ lines to get to current state. More... | |
virtual void | refreshSolver (OsiSolverInterface *solver) |
This can be used to refresh any information. More... | |
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CglCutGenerator () | |
Default constructor. More... | |
CglCutGenerator (const CglCutGenerator &) | |
Copy constructor. More... | |
CglCutGenerator & | operator= (const CglCutGenerator &rhs) |
Assignment operator. More... | |
virtual | ~CglCutGenerator () |
Destructor. More... | |
int | getAggressiveness () const |
Get Aggressiveness - 0 = neutral, 100 is normal root node. More... | |
void | setAggressiveness (int value) |
Set Aggressiveness - 0 = neutral, 100 is normal root node. More... | |
void | setGlobalCuts (bool trueOrFalse) |
Set whether can do global cuts. More... | |
bool | canDoGlobalCuts () const |
Say whether can do global cuts. More... | |
virtual bool | mayGenerateRowCutsInTree () const |
Returns true if may generate Row cuts in tree (rather than root node). More... | |
virtual bool | needsOptimalBasis () const |
Return true if needs optimal basis to do cuts. More... | |
virtual int | maximumLengthOfCutInTree () const |
Return maximum length of cut in tree. More... | |
Friends | |
void | CglZeroHalfUnitTest (const OsiSolverInterface *siP, const std::string mpdDir) |
A function that tests the methods in the CglZeroHalf class. More... | |
Additional Inherited Members | |
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int | aggressive_ |
Aggressiveness - 0 = neutral, 100 is normal root node. More... | |
bool | canDoGlobalCuts_ |
True if can do global cuts i.e. no general integers. More... | |
Zero Half Cut Generator Class.
This class generates zero half cuts via the following method:
See -
G. Andreello, A. Caprara, M. Fischetti, “Embedding Cuts in a Branch and Cut Framework: a Computational Study with {0,1/2}-Cuts”, INFORMS Journal on Computing 19(2), 229-238, 2007.
Definition at line 26 of file CglZeroHalf.hpp.
CglZeroHalf::CglZeroHalf | ( | ) |
Default constructor.
CglZeroHalf::CglZeroHalf | ( | const CglZeroHalf & | ) |
Copy constructor.
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virtual |
Destructor.
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virtual |
Generate zero half cuts for the model accessed through the solver interface.
Insert generated cuts into the cut set cs.
Implements CglCutGenerator.
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inline |
Get flags.
Definition at line 44 of file CglZeroHalf.hpp.
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inline |
Set flags.
Definition at line 47 of file CglZeroHalf.hpp.
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virtual |
Clone.
Implements CglCutGenerator.
CglZeroHalf& CglZeroHalf::operator= | ( | const CglZeroHalf & | rhs | ) |
Assignment operator.
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virtual |
Create C++ lines to get to current state.
Reimplemented from CglCutGenerator.
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virtual |
This can be used to refresh any information.
Reimplemented from CglCutGenerator.
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friend |
A function that tests the methods in the CglZeroHalf class.
The only reason for it not to be a member method is that this way it doesn't have to be compiled into the library. And that's a gain, because the library should be compiled with optimization on, but this method should be compiled with debugging.