#include <CglFlowCover.hpp>
Inheritance diagram for CglFlowCover:
Public Member Functions | |
void | flowPreprocess (const OsiSolverInterface &si) const |
Do the following tasks:. | |
Generate Cuts | |
virtual void | generateCuts (const OsiSolverInterface &si, OsiCuts &cs, const CglTreeInfo info=CglTreeInfo()) const |
Generate Lifed Simple Generalized flow cover cuts for the model data contained in si. | |
Functions to query and set maximum number of cuts can be | |
generated. | |
int | getMaxNumCuts () const |
void | setMaxNumCuts (int mc) |
Constructors and destructors | |
CglFlowCover () | |
Default constructor. | |
CglFlowCover (const CglFlowCover &) | |
Copy constructor. | |
virtual CglCutGenerator * | clone () const |
Clone. | |
CglFlowCover & | operator= (const CglFlowCover &rhs) |
Assignment operator. | |
virtual | ~CglFlowCover () |
Destructor. | |
virtual std::string | generateCpp (FILE *fp) |
Create C++ lines to get to current state. | |
Static Public Member Functions | |
Functions to query and set the number of cuts have been | |
generated. | |
static int | getNumFlowCuts () |
static void | setNumFlowCuts (int fc) |
static void | incNumFlowCuts (int fc=1) |
Private Member Functions | |
bool | generateOneFlowCut (const OsiSolverInterface &si, const int rowLen, int *ind, double *coef, char sense, double rhs, OsiRowCut &flowCut, double &violation) const |
Based a given row, a LP solution and other model data, this function tries to generate a violated lifted simple generalized flow cover. | |
void | flipRow (int rowLen, double *coef, double &rhs) const |
Transform a row from ">=" to "<=", and vice versa. | |
void | flipRow (int rowLen, double *coef, char &sen, double &rhs) const |
Transform a row from ">=" to "<=", and vice versa. | |
CglFlowRowType | determineOneRowType (const OsiSolverInterface &si, int rowLen, int *ind, double *coef, char sen, double rhs) const |
Determine the type of a given row. | |
void | liftMinus (double &movement, int t, int r, double z, double dPrimePrime, double lambda, double ml, double *M, double *rho) const |
Lift functions. | |
bool | liftPlus (double &alpha, double &beta, int r, double m_j, double lambda, double y_j, double x_j, double dPrimePrime, double *M) const |
const CglFlowRowType * | getRowTypes () const |
CglFlowRowType | getRowType (const int i) const |
void | setRowTypes (CglFlowRowType *rt) |
Set rowtypes, take over the ownership. | |
void | setRowTypes (const CglFlowRowType rt, const int i) |
const CglFlowVUB * | getVubs () const |
const CglFlowVUB & | getVubs (int i) const |
void | setVubs (CglFlowVUB *vubs) |
Set CglFlowVUBs,take over the ownership. | |
void | setVubs (const CglFlowVUB &vub, int i) |
void | printVubs (std::ostream &os) const |
const CglFlowVLB * | getVlbs () const |
const CglFlowVLB & | getVlbs (int i) const |
void | setVlbs (CglFlowVLB *vlbs) |
Set CglFlowVLBs,take over the ownership. | |
void | setVlbs (const CglFlowVLB &vlb, int i) |
Private Attributes | |
int | maxNumCuts_ |
The maximum number of flow cuts to be generated. | |
double | EPSILON_ |
Tolerance used for numerical purpose. | |
int | UNDEFINED_ |
The variable upper bound of a flow is not indentified yet. | |
double | INFTY_ |
Very large number. | |
double | TOLERANCE_ |
If violation of a cut is greater that this number, the cut is useful. | |
bool | firstProcess_ |
First time preprocessing. | |
int | numRows_ |
The number rows of the problem. | |
int | numCols_ |
The number columns of the problem. | |
bool | doneInitPre_ |
Indicate whether initial flow preprecessing has been done. | |
CglFlowVUB * | vubs_ |
The array of CglFlowVUBs. | |
CglFlowVLB * | vlbs_ |
The array of CglFlowVLBs. | |
CglFlowRowType * | rowTypes_ |
CglFlowRowType of the rows in model. | |
Static Private Attributes | |
static int | numFlowCuts_ |
The number flow cuts found. | |
Friends | |
void | CglFlowCoverUnitTest (const OsiSolverInterface *siP, const std::string mpdDir) |
A function that tests the methods in the CglFlowCover class. |
Definition at line 148 of file CglFlowCover.hpp.
CglFlowCover::CglFlowCover | ( | ) |
Default constructor.
CglFlowCover::CglFlowCover | ( | const CglFlowCover & | ) |
Copy constructor.
virtual CglFlowCover::~CglFlowCover | ( | ) | [virtual] |
Destructor.
void CglFlowCover::flowPreprocess | ( | const OsiSolverInterface & | si | ) | const |
Do the following tasks:.
generateCuts(const OsiSolverInterface & si, OsiCuts & cs)
.
virtual void CglFlowCover::generateCuts | ( | const OsiSolverInterface & | si, | |
OsiCuts & | cs, | |||
const CglTreeInfo | info = CglTreeInfo() | |||
) | const [virtual] |
Generate Lifed Simple Generalized flow cover cuts for the model data contained in si.
The generated cuts are inserted into and returned in the collection of cuts cs.
Implements CglCutGenerator.
int CglFlowCover::getMaxNumCuts | ( | ) | const [inline] |
Definition at line 178 of file CglFlowCover.hpp.
void CglFlowCover::setMaxNumCuts | ( | int | mc | ) | [inline] |
Definition at line 179 of file CglFlowCover.hpp.
static int CglFlowCover::getNumFlowCuts | ( | ) | [inline, static] |
Definition at line 185 of file CglFlowCover.hpp.
static void CglFlowCover::setNumFlowCuts | ( | int | fc | ) | [inline, static] |
Definition at line 186 of file CglFlowCover.hpp.
static void CglFlowCover::incNumFlowCuts | ( | int | fc = 1 |
) | [inline, static] |
Definition at line 187 of file CglFlowCover.hpp.
virtual CglCutGenerator* CglFlowCover::clone | ( | ) | const [virtual] |
CglFlowCover& CglFlowCover::operator= | ( | const CglFlowCover & | rhs | ) |
Assignment operator.
virtual std::string CglFlowCover::generateCpp | ( | FILE * | fp | ) | [virtual] |
bool CglFlowCover::generateOneFlowCut | ( | const OsiSolverInterface & | si, | |
const int | rowLen, | |||
int * | ind, | |||
double * | coef, | |||
char | sense, | |||
double | rhs, | |||
OsiRowCut & | flowCut, | |||
double & | violation | |||
) | const [private] |
Based a given row, a LP solution and other model data, this function tries to generate a violated lifted simple generalized flow cover.
void CglFlowCover::flipRow | ( | int | rowLen, | |
double * | coef, | |||
double & | rhs | |||
) | const [private] |
Transform a row from ">=" to "<=", and vice versa.
void CglFlowCover::flipRow | ( | int | rowLen, | |
double * | coef, | |||
char & | sen, | |||
double & | rhs | |||
) | const [private] |
Transform a row from ">=" to "<=", and vice versa.
Have 'sense'.
CglFlowRowType CglFlowCover::determineOneRowType | ( | const OsiSolverInterface & | si, | |
int | rowLen, | |||
int * | ind, | |||
double * | coef, | |||
char | sen, | |||
double | rhs | |||
) | const [private] |
Determine the type of a given row.
void CglFlowCover::liftMinus | ( | double & | movement, | |
int | t, | |||
int | r, | |||
double | z, | |||
double | dPrimePrime, | |||
double | lambda, | |||
double | ml, | |||
double * | M, | |||
double * | rho | |||
) | const [private] |
Lift functions.
bool CglFlowCover::liftPlus | ( | double & | alpha, | |
double & | beta, | |||
int | r, | |||
double | m_j, | |||
double | lambda, | |||
double | y_j, | |||
double | x_j, | |||
double | dPrimePrime, | |||
double * | M | |||
) | const [private] |
const CglFlowRowType* CglFlowCover::getRowTypes | ( | ) | const [inline, private] |
Definition at line 268 of file CglFlowCover.hpp.
CglFlowRowType CglFlowCover::getRowType | ( | const int | i | ) | const [inline, private] |
Definition at line 270 of file CglFlowCover.hpp.
void CglFlowCover::setRowTypes | ( | CglFlowRowType * | rt | ) | [inline, private] |
void CglFlowCover::setRowTypes | ( | const CglFlowRowType | rt, | |
const int | i | |||
) | [inline, private] |
Definition at line 275 of file CglFlowCover.hpp.
const CglFlowVUB* CglFlowCover::getVubs | ( | ) | const [inline, private] |
Definition at line 290 of file CglFlowCover.hpp.
const CglFlowVUB& CglFlowCover::getVubs | ( | int | i | ) | const [inline, private] |
Definition at line 291 of file CglFlowCover.hpp.
void CglFlowCover::setVubs | ( | CglFlowVUB * | vubs | ) | [inline, private] |
void CglFlowCover::setVubs | ( | const CglFlowVUB & | vub, | |
int | i | |||
) | [inline, private] |
Definition at line 294 of file CglFlowCover.hpp.
void CglFlowCover::printVubs | ( | std::ostream & | os | ) | const [inline, private] |
Definition at line 304 of file CglFlowCover.hpp.
const CglFlowVLB* CglFlowCover::getVlbs | ( | ) | const [inline, private] |
Definition at line 314 of file CglFlowCover.hpp.
const CglFlowVLB& CglFlowCover::getVlbs | ( | int | i | ) | const [inline, private] |
Definition at line 315 of file CglFlowCover.hpp.
void CglFlowCover::setVlbs | ( | CglFlowVLB * | vlbs | ) | [inline, private] |
void CglFlowCover::setVlbs | ( | const CglFlowVLB & | vlb, | |
int | i | |||
) | [inline, private] |
Definition at line 318 of file CglFlowCover.hpp.
void CglFlowCoverUnitTest | ( | const OsiSolverInterface * | siP, | |
const std::string | mpdDir | |||
) | [friend] |
A function that tests the methods in the CglFlowCover 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.
int CglFlowCover::maxNumCuts_ [private] |
The maximum number of flow cuts to be generated.
Default is 1000.
Definition at line 335 of file CglFlowCover.hpp.
double CglFlowCover::EPSILON_ [private] |
int CglFlowCover::UNDEFINED_ [private] |
The variable upper bound of a flow is not indentified yet.
Definition at line 339 of file CglFlowCover.hpp.
double CglFlowCover::INFTY_ [private] |
double CglFlowCover::TOLERANCE_ [private] |
If violation of a cut is greater that this number, the cut is useful.
Definition at line 343 of file CglFlowCover.hpp.
bool CglFlowCover::firstProcess_ [mutable, private] |
int CglFlowCover::numRows_ [mutable, private] |
int CglFlowCover::numCols_ [mutable, private] |
int CglFlowCover::numFlowCuts_ [static, private] |
bool CglFlowCover::doneInitPre_ [mutable, private] |
Indicate whether initial flow preprecessing has been done.
Definition at line 353 of file CglFlowCover.hpp.
CglFlowVUB* CglFlowCover::vubs_ [mutable, private] |
CglFlowVLB* CglFlowCover::vlbs_ [mutable, private] |
CglFlowRowType* CglFlowCover::rowTypes_ [mutable, private] |