9class CoinPresolveAction;
10#include "CoinPresolveMatrix.hpp"
88 double feasibilityTolerance = 0.0,
89 bool keepIntegers =
true,
91 const char *prohibited = NULL,
93 const char *rowProhibited = NULL);
247 virtual const CoinPresolveAction *
presolve(CoinPresolveMatrix *prob);
OSI interface to COIN problem simplification capabilities.
int * originalColumn_
Original column numbers.
void setNonLinearValue(double value)
"Magic" number.
OsiPresolve()
Default constructor (empty object)
void gutsOfDestroy()
Destroys queued postsolve actions.
virtual void postsolve(bool updateStatus=true)
Restate the solution to the presolved problem in terms of the original problem and load it into the o...
OsiSolverInterface * originalModel_
Original model (solver interface loaded with the original problem).
virtual ~OsiPresolve()
Virtual destructor.
int presolveActions_
Whether we want to skip dual part of presolve etc.
CoinBigIndex nelems_
Number of nonzero matrix coefficients in the original model.
void setPresolveActions(int action)
Fine control over presolve actions.
OsiSolverInterface * presolvedModel_
Presolved model (solver interface loaded with the presolved problem)
int * originalRow_
Original row numbers.
int ncols_
Number of columns in original model.
const int * originalRows() const
Return a pointer to the original rows.
double nonLinearValue() const
OsiSolverInterface * originalModel() const
Return a pointer to the original model.
OsiSolverInterface * model() const
Return a pointer to the presolved model.
double nonLinearValue_
"Magic" number.
int nrows_
Number of rows in original model.
OsiSolverInterface * presolvedModel() const
Get presolved model.
int getNumRows() const
Return number of rows in original model.
virtual void postsolve(CoinPostsolveMatrix &prob)
Reverse presolve transformations to recover the solution to the original problem.
virtual OsiSolverInterface * presolvedModel(OsiSolverInterface &origModel, double feasibilityTolerance=0.0, bool keepIntegers=true, int numberPasses=5, const char *prohibited=NULL, bool doStatus=true, const char *rowProhibited=NULL)
Create a new OsiSolverInterface loaded with the presolved problem.
int numberPasses_
Number of major passes.
virtual const CoinPresolveAction * presolve(CoinPresolveMatrix *prob)
Apply presolve transformations to the problem.
const int * originalColumns() const
Return a pointer to the original columns.
int getNumCols() const
Return number of columns in original model.
const CoinPresolveAction * paction_
The list of transformations applied.
void setPresolvedModel(OsiSolverInterface *presolvedModel)
Set presolved model.
void setOriginalModel(OsiSolverInterface *model)
Set the pointer to the original model.
Abstract Base Class for describing an interface to a solver.