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ClpQuadraticObjective Class Reference

Quadratic Objective Class. More...

#include <ClpQuadraticObjective.hpp>

Inheritance diagram for ClpQuadraticObjective:
Collaboration diagram for ClpQuadraticObjective:

List of all members.

Public Member Functions

Stuff
virtual double * gradient (const ClpSimplex *model, const double *solution, double &offset, bool refresh, int includeLinear=2)
 Returns gradient.
virtual double reducedGradient (ClpSimplex *model, double *region, bool useFeasibleCosts)
 Resize objective.
virtual double stepLength (ClpSimplex *model, const double *solution, const double *change, double maximumTheta, double &currentObj, double &predictedObj, double &thetaObj)
 Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.
virtual double objectiveValue (const ClpSimplex *model, const double *solution) const
 Return objective value (without any ClpModel offset) (model may be NULL)
virtual void resize (int newNumberColumns)
 Resize objective.
virtual void deleteSome (int numberToDelete, const int *which)
 Delete columns in objective.
virtual void reallyScale (const double *columnScale)
 Scale objective.
virtual int markNonlinear (char *which)
 Given a zeroed array sets nonlinear columns to 1.
Constructors and destructors
 ClpQuadraticObjective ()
 Default Constructor.
 ClpQuadraticObjective (const double *linearObjective, int numberColumns, const CoinBigIndex *start, const int *column, const double *element, int numberExtendedColumns_=-1)
 Constructor from objective.
 ClpQuadraticObjective (const ClpQuadraticObjective &rhs, int type=0)
 Copy constructor .
 ClpQuadraticObjective (const ClpQuadraticObjective &rhs, int numberColumns, const int *whichColumns)
 Subset constructor.
ClpQuadraticObjectiveoperator= (const ClpQuadraticObjective &rhs)
 Assignment operator.
virtual ~ClpQuadraticObjective ()
 Destructor.
virtual ClpObjectiveclone () const
 Clone.
virtual ClpObjectivesubsetClone (int numberColumns, const int *whichColumns) const
 Subset clone.
void loadQuadraticObjective (const int numberColumns, const CoinBigIndex *start, const int *column, const double *element, int numberExtendedColumns=-1)
 Load up quadratic objective.
void loadQuadraticObjective (const CoinPackedMatrix &matrix)
void deleteQuadraticObjective ()
 Get rid of quadratic objective.
Gets and sets
CoinPackedMatrix * quadraticObjective () const
 Quadratic objective.
double * linearObjective () const
 Linear objective.
int numberExtendedColumns () const
 Length of linear objective which could be bigger.
int numberColumns () const
 Number of columns in quadratic objective.
bool fullMatrix () const
 If a full or half matrix.

Detailed Description

Quadratic Objective Class.

Definition at line 18 of file ClpQuadraticObjective.hpp.


Constructor & Destructor Documentation

ClpQuadraticObjective::ClpQuadraticObjective ( )

Default Constructor.

ClpQuadraticObjective::ClpQuadraticObjective ( const double *  linearObjective,
int  numberColumns,
const CoinBigIndex *  start,
const int *  column,
const double *  element,
int  numberExtendedColumns_ = -1 
)

Constructor from objective.

ClpQuadraticObjective::ClpQuadraticObjective ( const ClpQuadraticObjective rhs,
int  type = 0 
)

Copy constructor .

If type is -1 then make sure half symmetric, if +1 then make sure full

ClpQuadraticObjective::ClpQuadraticObjective ( const ClpQuadraticObjective rhs,
int  numberColumns,
const int *  whichColumns 
)

Subset constructor.

Duplicates are allowed and order is as given.

virtual ClpQuadraticObjective::~ClpQuadraticObjective ( ) [virtual]

Destructor.


Member Function Documentation

virtual double* ClpQuadraticObjective::gradient ( const ClpSimplex model,
const double *  solution,
double &  offset,
bool  refresh,
int  includeLinear = 2 
) [virtual]

Returns gradient.

If Quadratic then solution may be NULL, also returns an offset (to be added to current one) If refresh is false then uses last solution Uses model for scaling includeLinear 0 - no, 1 as is, 2 as feasible

Implements ClpObjective.

virtual double ClpQuadraticObjective::reducedGradient ( ClpSimplex model,
double *  region,
bool  useFeasibleCosts 
) [virtual]

Resize objective.

Returns reduced gradient.Returns an offset (to be added to current one).

Implements ClpObjective.

virtual double ClpQuadraticObjective::stepLength ( ClpSimplex model,
const double *  solution,
const double *  change,
double  maximumTheta,
double &  currentObj,
double &  predictedObj,
double &  thetaObj 
) [virtual]

Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.

arrays are numberColumns+numberRows Also sets current objective, predicted and at maximumTheta

Implements ClpObjective.

virtual double ClpQuadraticObjective::objectiveValue ( const ClpSimplex model,
const double *  solution 
) const [virtual]

Return objective value (without any ClpModel offset) (model may be NULL)

Implements ClpObjective.

virtual void ClpQuadraticObjective::resize ( int  newNumberColumns) [virtual]

Resize objective.

Implements ClpObjective.

virtual void ClpQuadraticObjective::deleteSome ( int  numberToDelete,
const int *  which 
) [virtual]

Delete columns in objective.

Implements ClpObjective.

virtual void ClpQuadraticObjective::reallyScale ( const double *  columnScale) [virtual]

Scale objective.

Implements ClpObjective.

virtual int ClpQuadraticObjective::markNonlinear ( char *  which) [virtual]

Given a zeroed array sets nonlinear columns to 1.

Returns number of nonlinear columns

Reimplemented from ClpObjective.

ClpQuadraticObjective& ClpQuadraticObjective::operator= ( const ClpQuadraticObjective rhs)

Assignment operator.

virtual ClpObjective* ClpQuadraticObjective::clone ( ) const [virtual]

Clone.

Implements ClpObjective.

virtual ClpObjective* ClpQuadraticObjective::subsetClone ( int  numberColumns,
const int *  whichColumns 
) const [virtual]

Subset clone.

Duplicates are allowed and order is as given.

Reimplemented from ClpObjective.

void ClpQuadraticObjective::loadQuadraticObjective ( const int  numberColumns,
const CoinBigIndex *  start,
const int *  column,
const double *  element,
int  numberExtendedColumns = -1 
)

Load up quadratic objective.

This is stored as a CoinPackedMatrix

void ClpQuadraticObjective::loadQuadraticObjective ( const CoinPackedMatrix &  matrix)
void ClpQuadraticObjective::deleteQuadraticObjective ( )

Get rid of quadratic objective.

CoinPackedMatrix* ClpQuadraticObjective::quadraticObjective ( ) const [inline]

Quadratic objective.

Definition at line 115 of file ClpQuadraticObjective.hpp.

double* ClpQuadraticObjective::linearObjective ( ) const [inline]

Linear objective.

Definition at line 119 of file ClpQuadraticObjective.hpp.

int ClpQuadraticObjective::numberExtendedColumns ( ) const [inline]

Length of linear objective which could be bigger.

Definition at line 123 of file ClpQuadraticObjective.hpp.

int ClpQuadraticObjective::numberColumns ( ) const [inline]

Number of columns in quadratic objective.

Definition at line 127 of file ClpQuadraticObjective.hpp.

bool ClpQuadraticObjective::fullMatrix ( ) const [inline]

If a full or half matrix.

Definition at line 131 of file ClpQuadraticObjective.hpp.


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