#include <CbcHeuristicGreedy.hpp>
Inheritance diagram for CbcHeuristicGreedyCover:
Public Member Functions | |
CbcHeuristicGreedyCover () | |
CbcHeuristicGreedyCover (CbcModel &model) | |
CbcHeuristicGreedyCover (const CbcHeuristicGreedyCover &) | |
~CbcHeuristicGreedyCover () | |
virtual CbcHeuristic * | clone () const |
Clone. | |
virtual void | generateCpp (FILE *fp) |
Create C++ lines to get to current state. | |
virtual void | setModel (CbcModel *model) |
update model (This is needed if cliques update matrix etc) | |
virtual int | solution (double &objectiveValue, double *newSolution) |
returns 0 if no solution, 1 if valid solution. | |
virtual void | validate () |
Validate model i.e. sets when_ to 0 if necessary (may be NULL). | |
virtual void | resetModel (CbcModel *model) |
Resets stuff if model changes. | |
int | algorithm () const |
void | setAlgorithm (int value) |
int | numberTimes () const |
void | setNumberTimes (int value) |
Protected Attributes | |
CoinPackedMatrix | matrix_ |
int | originalNumberRows_ |
int | algorithm_ |
int | numberTimes_ |
Do this many times. | |
Private Member Functions | |
CbcHeuristicGreedyCover & | operator= (const CbcHeuristicGreedyCover &rhs) |
Illegal Assignment operator. |
Definition at line 10 of file CbcHeuristicGreedy.hpp.
CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( | ) |
CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( | CbcModel & | model | ) |
CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( | const CbcHeuristicGreedyCover & | ) |
CbcHeuristicGreedyCover::~CbcHeuristicGreedyCover | ( | ) |
virtual CbcHeuristic* CbcHeuristicGreedyCover::clone | ( | ) | const [virtual] |
virtual void CbcHeuristicGreedyCover::generateCpp | ( | FILE * | fp | ) | [virtual] |
virtual void CbcHeuristicGreedyCover::setModel | ( | CbcModel * | model | ) | [virtual] |
virtual int CbcHeuristicGreedyCover::solution | ( | double & | objectiveValue, | |
double * | newSolution | |||
) | [virtual] |
returns 0 if no solution, 1 if valid solution.
Sets solution values if good, sets objective value (only if good) We leave all variables which are at one at this node of the tree to that value and will initially set all others to zero. We then sort all variables in order of their cost divided by the number of entries in rows which are not yet covered. We randomize that value a bit so that ties will be broken in different ways on different runs of the heuristic. We then choose the best one and set it to one and repeat the exercise.
Implements CbcHeuristic.
virtual void CbcHeuristicGreedyCover::validate | ( | ) | [virtual] |
virtual void CbcHeuristicGreedyCover::resetModel | ( | CbcModel * | model | ) | [virtual] |
int CbcHeuristicGreedyCover::algorithm | ( | ) | const [inline] |
void CbcHeuristicGreedyCover::setAlgorithm | ( | int | value | ) | [inline] |
int CbcHeuristicGreedyCover::numberTimes | ( | ) | const [inline] |
void CbcHeuristicGreedyCover::setNumberTimes | ( | int | value | ) | [inline] |
Definition at line 64 of file CbcHeuristicGreedy.hpp.
CbcHeuristicGreedyCover& CbcHeuristicGreedyCover::operator= | ( | const CbcHeuristicGreedyCover & | rhs | ) | [private] |
Illegal Assignment operator.
CoinPackedMatrix CbcHeuristicGreedyCover::matrix_ [protected] |
Definition at line 65 of file CbcHeuristicGreedy.hpp.
int CbcHeuristicGreedyCover::originalNumberRows_ [protected] |
Definition at line 73 of file CbcHeuristicGreedy.hpp.
int CbcHeuristicGreedyCover::algorithm_ [protected] |
Definition at line 79 of file CbcHeuristicGreedy.hpp.
Referenced by algorithm(), and setAlgorithm().
int CbcHeuristicGreedyCover::numberTimes_ [protected] |
Do this many times.
Definition at line 81 of file CbcHeuristicGreedy.hpp.
Referenced by numberTimes().