CbcHeuristicGreedy.hpp

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/* $Id: CbcHeuristicGreedy.hpp 1432 2010-02-07 19:33:53Z bjarni $ */
// Copyright (C) 2005, International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef CbcHeuristicGreedy_H
#define CbcHeuristicGreedy_H

#include "CbcHeuristic.hpp"
class CbcHeuristicGreedyCover : public CbcHeuristic {
public:

    // Default Constructor
    CbcHeuristicGreedyCover ();

    /* Constructor with model - assumed before cuts
       Initial version does not do Lps
    */
    CbcHeuristicGreedyCover (CbcModel & model);

    // Copy constructor
    CbcHeuristicGreedyCover ( const CbcHeuristicGreedyCover &);

    // Destructor
    ~CbcHeuristicGreedyCover ();

    virtual CbcHeuristic * clone() const;
    CbcHeuristicGreedyCover & operator=(const CbcHeuristicGreedyCover& rhs);
    virtual void generateCpp( FILE * fp) ;

    virtual void setModel(CbcModel * model);

    using CbcHeuristic::solution ;
    virtual int solution(double & objectiveValue,
                         double * newSolution);
    virtual void validate() ;
    virtual void resetModel(CbcModel * model);
    /* Algorithm
       0 - use current upper bounds
       1 - use original upper bounds
       If 10 added perturb ratios more
       if 100 added round up all >=0.5
    */
    inline int algorithm() const {
        return algorithm_;
    }
    inline void setAlgorithm(int value) {
        algorithm_ = value;
    }
    // Only do this many times
    inline int numberTimes() const {
        return numberTimes_;
    }
    inline void setNumberTimes(int value) {
        numberTimes_ = value;
    }

protected:
    void gutsOfConstructor(CbcModel * model);
    // Data

    // Original matrix by column
    CoinPackedMatrix matrix_;
    // original number of rows
    int originalNumberRows_;
    /* Algorithm
       0 - use current upper bounds
       1 - use original upper bounds
       If 10 added perturb ratios more
    */
    int algorithm_;
    int numberTimes_;

};


class CbcHeuristicGreedyEquality : public CbcHeuristic {
public:

    // Default Constructor
    CbcHeuristicGreedyEquality ();

    /* Constructor with model - assumed before cuts
       Initial version does not do Lps
    */
    CbcHeuristicGreedyEquality (CbcModel & model);

    // Copy constructor
    CbcHeuristicGreedyEquality ( const CbcHeuristicGreedyEquality &);

    // Destructor
    ~CbcHeuristicGreedyEquality ();

    virtual CbcHeuristic * clone() const;
    CbcHeuristicGreedyEquality & operator=(const CbcHeuristicGreedyEquality& rhs);
    virtual void generateCpp( FILE * fp) ;

    virtual void setModel(CbcModel * model);

    using CbcHeuristic::solution ;
    virtual int solution(double & objectiveValue,
                         double * newSolution);
    virtual void validate() ;
    virtual void resetModel(CbcModel * model);
    /* Algorithm
       0 - use current upper bounds
       1 - use original upper bounds
       If 10 added perturb ratios more
       if 100 added round up all >=0.5
    */
    inline int algorithm() const {
        return algorithm_;
    }
    inline void setAlgorithm(int value) {
        algorithm_ = value;
    }
    // Fraction of rhs to cover before branch and cut
    inline void setFraction(double value) {
        fraction_ = value;
    }
    inline double fraction() const {
        return fraction_;
    }
    // Only do this many times
    inline int numberTimes() const {
        return numberTimes_;
    }
    inline void setNumberTimes(int value) {
        numberTimes_ = value;
    }
protected:
    void gutsOfConstructor(CbcModel * model);
    // Data

    // Original matrix by column
    CoinPackedMatrix matrix_;
    // Fraction of rhs to cover before branch and cut
    double fraction_;
    // original number of rows
    int originalNumberRows_;
    /* Algorithm
       0 - use current upper bounds
       1 - use original upper bounds
       If 10 added perturb ratios more
    */
    int algorithm_;
    int numberTimes_;

};


#endif