# CbcHeuristicGreedyCover Class Reference

Greedy heuristic classes. More...

`#include <CbcHeuristicGreedy.hpp>`

Inheritance diagram for CbcHeuristicGreedyCover:
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Collaboration diagram for CbcHeuristicGreedyCover:
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List of all members.

## Public Member Functions
| CbcHeuristicGreedyCover ()
| CbcHeuristicGreedyCover (CbcModel &model)
| CbcHeuristicGreedyCover (const CbcHeuristicGreedyCover &)
| ~CbcHeuristicGreedyCover ()
virtual CbcHeuristic * | clone () const
| Clone.
CbcHeuristicGreedyCover & | operator= (const CbcHeuristicGreedyCover &rhs)
| Assignment operator.
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 Member Functions
void | gutsOfConstructor (CbcModel *model)
| Guts of constructor from a CbcModel.
## Protected Attributes
CoinPackedMatrix | matrix_
int | originalNumberRows_
int | algorithm_
int | numberTimes_
| Do this many times.

## Detailed Description

Greedy heuristic classes.

Definition at line 13 of file CbcHeuristicGreedy.hpp.

## Constructor & Destructor Documentation

CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( |  | ) |

CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( | CbcModel & | model | ) |

CbcHeuristicGreedyCover::CbcHeuristicGreedyCover | ( | const CbcHeuristicGreedyCover & |  | ) |

CbcHeuristicGreedyCover::~CbcHeuristicGreedyCover | ( |  | ) |

## Member Function Documentation

virtual CbcHeuristic* CbcHeuristicGreedyCover::clone | ( |  | ) | const`[virtual]`

Clone.

Implements CbcHeuristic.

CbcHeuristicGreedyCover& CbcHeuristicGreedyCover::operator= | ( | const CbcHeuristicGreedyCover & | rhs | ) |

Assignment operator.

Reimplemented from CbcHeuristic.

virtual void CbcHeuristicGreedyCover::generateCpp | ( | FILE * | fp | ) | `[virtual]`

Create C++ lines to get to current state.

Reimplemented from CbcHeuristic.

virtual void CbcHeuristicGreedyCover::setModel | ( | CbcModel * | model | ) | `[virtual]`

update model (This is needed if cliques update matrix etc)

Reimplemented from CbcHeuristic.

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]`

Validate model i.e. sets when_ to 0 if necessary (may be NULL).

Reimplemented from CbcHeuristic.

virtual void CbcHeuristicGreedyCover::resetModel | ( | CbcModel * | model | ) | `[virtual]`

Resets stuff if model changes.

Implements CbcHeuristic.

int CbcHeuristicGreedyCover::algorithm | ( |  | ) | const`[inline]`

Definition at line 63 of file CbcHeuristicGreedy.hpp.

void CbcHeuristicGreedyCover::setAlgorithm | ( | int | value | ) | `[inline]`

Definition at line 66 of file CbcHeuristicGreedy.hpp.

int CbcHeuristicGreedyCover::numberTimes | ( |  | ) | const`[inline]`

Definition at line 70 of file CbcHeuristicGreedy.hpp.

void CbcHeuristicGreedyCover::setNumberTimes | ( | int | value | ) | `[inline]`

Definition at line 73 of file CbcHeuristicGreedy.hpp.

void CbcHeuristicGreedyCover::gutsOfConstructor | ( | CbcModel * | model | ) | `[protected]`

Guts of constructor from a CbcModel.

## Member Data Documentation

CoinPackedMatrix CbcHeuristicGreedyCover::matrix_`[protected]`

Definition at line 83 of file CbcHeuristicGreedy.hpp.

int CbcHeuristicGreedyCover::originalNumberRows_`[protected]`

Definition at line 85 of file CbcHeuristicGreedy.hpp.

int CbcHeuristicGreedyCover::algorithm_`[protected]`

Definition at line 91 of file CbcHeuristicGreedy.hpp.

int CbcHeuristicGreedyCover::numberTimes_`[protected]`

Do this many times.

Definition at line 93 of file CbcHeuristicGreedy.hpp.

The documentation for this class was generated from the following file:

- /home/coin/svn-release/Cbc-2.8.1/Cbc/src/CbcHeuristicGreedy.hpp

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