00001
00002
00003 #ifndef ClpQuadraticObjective_H
00004 #define ClpQuadraticObjective_H
00005
00006 #include "ClpObjective.hpp"
00007 #include "CoinPackedMatrix.hpp"
00008
00009
00010
00015 class ClpQuadraticObjective : public ClpObjective {
00016
00017 public:
00018
00020
00021
00028 virtual double * gradient(const ClpSimplex * model,
00029 const double * solution, double & offset,bool refresh,
00030 int includeLinear=2);
00032
00034 virtual double reducedGradient(ClpSimplex * model, double * region,
00035 bool useFeasibleCosts);
00042 virtual double stepLength(ClpSimplex * model,
00043 const double * solution,
00044 const double * change,
00045 double maximumTheta,
00046 double & currentObj,
00047 double & predictedObj,
00048 double & thetaObj);
00049 virtual void resize(int newNumberColumns) ;
00051 virtual void deleteSome(int numberToDelete, const int * which) ;
00053 virtual void reallyScale(const double * columnScale) ;
00057 virtual int markNonlinear(char * which);
00058
00060
00061
00063
00064
00065 ClpQuadraticObjective();
00066
00068 ClpQuadraticObjective(const double * linearObjective, int numberColumns,
00069 const CoinBigIndex * start,
00070 const int * column, const double * element,
00071 int numberExtendedColumns_=-1);
00072
00077 ClpQuadraticObjective(const ClpQuadraticObjective & rhs,int type=0);
00081 ClpQuadraticObjective (const ClpQuadraticObjective &rhs,int numberColumns,
00082 const int * whichColumns) ;
00083
00085 ClpQuadraticObjective & operator=(const ClpQuadraticObjective& rhs);
00086
00088 virtual ~ClpQuadraticObjective ();
00089
00091 virtual ClpObjective * clone() const;
00095 virtual ClpObjective * subsetClone (int numberColumns,
00096 const int * whichColumns) const;
00097
00099 void loadQuadraticObjective(const int numberColumns,
00100 const CoinBigIndex * start,
00101 const int * column, const double * element,
00102 int numberExtendedColumns=-1);
00103 void loadQuadraticObjective ( const CoinPackedMatrix& matrix);
00105 void deleteQuadraticObjective();
00107
00108
00109
00110 inline CoinPackedMatrix * quadraticObjective() const { return quadraticObjective_; }
00112 inline double * linearObjective() const { return objective_; }
00114 inline int numberExtendedColumns() const
00115 {return numberExtendedColumns_;};
00117 inline int numberColumns() const
00118 {return numberColumns_;};
00120 inline bool fullMatrix() const
00121 { return fullMatrix_;};
00123
00124
00125
00126 private:
00129 CoinPackedMatrix * quadraticObjective_;
00131 double * objective_;
00133 double * gradient_;
00135 int numberColumns_;
00137 int numberExtendedColumns_;
00139 bool fullMatrix_;
00141 };
00142
00143 #endif