CbcHeuristicGreedyCover Class Reference

Greedy heuristic classes. More...

#include <CbcHeuristicGreedy.hpp>

Inheritance diagram for CbcHeuristicGreedyCover:
CbcHeuristic

List of all members.

Public Member Functions

 CbcHeuristicGreedyCover ()
 CbcHeuristicGreedyCover (CbcModel &model)
 CbcHeuristicGreedyCover (const CbcHeuristicGreedyCover &)
 ~CbcHeuristicGreedyCover ()
virtual CbcHeuristicclone () const
 Clone.
CbcHeuristicGreedyCoveroperator= (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 11 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.

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 61 of file CbcHeuristicGreedy.hpp.

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

Definition at line 63 of file CbcHeuristicGreedy.hpp.

int CbcHeuristicGreedyCover::numberTimes (  )  const [inline]

Definition at line 66 of file CbcHeuristicGreedy.hpp.

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

Definition at line 68 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 77 of file CbcHeuristicGreedy.hpp.

Definition at line 79 of file CbcHeuristicGreedy.hpp.

Definition at line 85 of file CbcHeuristicGreedy.hpp.

Do this many times.

Definition at line 87 of file CbcHeuristicGreedy.hpp.


The documentation for this class was generated from the following file:
Generated on Fri May 28 17:17:31 2010 by  doxygen 1.6.3