Vol(ume) Solver Interface. More...

#include <OsiTestSolverInterface.hpp>

Inheritance diagram for OsiTestSolverInterface:

Collaboration diagram for OsiTestSolverInterface:

Classes
class	OsiVolMatrixOneMinusOne_

Public Member Functions
virtual void	setObjSense (double s)
	Set objective function sense (1 for min (default), -1 for max,) More...

virtual void	setColSolution (const double *colsol)
	Set the primal solution column values. More...

virtual void	setRowPrice (const double *rowprice)
	Set dual solution vector. More...

Solve methods
virtual void	initialSolve ()
	Solve initial LP relaxation. More...

virtual void	resolve ()
	Resolve an LP relaxation after problem modification. More...

virtual void	branchAndBound ()
	Invoke solver's built-in enumeration algorithm. More...

Parameter set/get methods
The set methods return true if the parameter was set to the given value, false otherwise. There can be various reasons for failure: the given parameter is not applicable for the solver (e.g., refactorization frequency for the volume algorithm), the parameter is not yet implemented for the solver or simply the value of the parameter is out of the range the solver accepts. If a parameter setting call returns false check the details of your solver. The get methods return true if the given parameter is applicable for the solver and is implemented. In this case the value of the parameter is returned in the second argument. Otherwise they return false.
bool	setIntParam (OsiIntParam key, int value)
	Set an integer parameter. More...

bool	setDblParam (OsiDblParam key, double value)
	Set a double parameter. More...

bool	setStrParam (OsiStrParam key, const std::string &value)
	Set a string parameter. More...

bool	getIntParam (OsiIntParam key, int &value) const
	Get an integer parameter. More...

bool	getDblParam (OsiDblParam key, double &value) const
	Get a double parameter. More...

bool	getStrParam (OsiStrParam key, std::string &value) const
	Get a string parameter. More...

Methods returning info on how the solution process terminated
virtual bool	isAbandoned () const
	Are there a numerical difficulties? More...

virtual bool	isProvenOptimal () const
	Is optimality proven? More...

virtual bool	isProvenPrimalInfeasible () const
	Is primal infeasiblity proven? More...

virtual bool	isProvenDualInfeasible () const
	Is dual infeasiblity proven? More...

virtual bool	isPrimalObjectiveLimitReached () const
	Is the given primal objective limit reached? More...

virtual bool	isDualObjectiveLimitReached () const
	Is the given dual objective limit reached? More...

virtual bool	isIterationLimitReached () const
	Iteration limit reached? More...

WarmStart related methods
virtual CoinWarmStart *	getEmptyWarmStart () const
	Get an empty warm start object. More...

virtual CoinWarmStart *	getWarmStart () const
	Get warmstarting information. More...

virtual bool	setWarmStart (const CoinWarmStart *warmstart)
	Set warmstarting information. More...

Hotstart related methods (primarily used in strong branching). <br>
The user can create a hotstart (a snapshot) of the optimization process then reoptimize over and over again always starting from there. NOTE: between hotstarted optimizations only bound changes are allowed.
virtual void	markHotStart ()
	Create a hotstart point of the optimization process. More...

virtual void	solveFromHotStart ()
	Optimize starting from the hotstart. More...

virtual void	unmarkHotStart ()
	Delete the snapshot. More...

Methods related to querying the input data
virtual int	getNumCols () const
	Get number of columns. More...

virtual int	getNumRows () const
	Get number of rows. More...

virtual int	getNumElements () const
	Get number of nonzero elements. More...

virtual const double *	getColLower () const
	Get pointer to array[getNumCols()] of column lower bounds. More...

virtual const double *	getColUpper () const
	Get pointer to array[getNumCols()] of column upper bounds. More...

virtual const char *	getRowSense () const
	Get pointer to array[getNumRows()] of row constraint senses. More...

virtual const double *	getRightHandSide () const
	Get pointer to array[getNumRows()] of rows right-hand sides. More...

virtual const double *	getRowRange () const
	Get pointer to array[getNumRows()] of row ranges. More...

virtual const double *	getRowLower () const
	Get pointer to array[getNumRows()] of row lower bounds. More...

virtual const double *	getRowUpper () const
	Get pointer to array[getNumRows()] of row upper bounds. More...

virtual const double *	getObjCoefficients () const
	Get pointer to array[getNumCols()] of objective function coefficients. More...

virtual double	getObjSense () const
	Get objective function sense (1 for min (default), -1 for max) More...

virtual bool	isContinuous (int colNumber) const
	Return true if column is continuous. More...

virtual const CoinPackedMatrix *	getMatrixByRow () const
	Get pointer to row-wise copy of matrix. More...

virtual const CoinPackedMatrix *	getMatrixByCol () const
	Get pointer to column-wise copy of matrix. More...

virtual double	getInfinity () const
	Get solver's value for infinity. More...

Methods related to querying the solution
virtual const double *	getColSolution () const
	Get pointer to array[getNumCols()] of primal solution vector. More...

virtual const double *	getRowPrice () const
	Get pointer to array[getNumRows()] of dual prices. More...

virtual const double *	getReducedCost () const
	Get a pointer to array[getNumCols()] of reduced costs. More...

virtual const double *	getRowActivity () const
	Get pointer to array[getNumRows()] of row activity levels (constraint matrix times the solution vector. More...

virtual double	getObjValue () const
	Get objective function value. More...

virtual int	getIterationCount () const
	Get how many iterations it took to solve the problem (whatever "iteration" mean to the solver. More...

virtual std::vector< double * >	getDualRays (int maxNumRays, bool fullRay=false) const
	Get as many dual rays as the solver can provide. More...

virtual std::vector< double * >	getPrimalRays (int maxNumRays) const
	Get as many primal rays as the solver can provide. More...

Changing bounds on variables and constraints
virtual void	setObjCoeff (int elementIndex, double elementValue)
	Set an objective function coefficient. More...

virtual void	setColLower (int elementIndex, double elementValue)
	Set a single column lower bound Use -COIN_DBL_MAX for -infinity. More...

virtual void	setColUpper (int elementIndex, double elementValue)
	Set a single column upper bound Use COIN_DBL_MAX for infinity. More...

virtual void	setColBounds (int elementIndex, double lower, double upper)
	Set a single column lower and upper bound. More...

virtual void	setColSetBounds (const int indexFirst, const int indexLast, const double *boundList)
	Set the bounds on a number of columns simultaneously The default implementation just invokes setColLower() and setColUpper() over and over again. More...

virtual void	setRowLower (int elementIndex, double elementValue)
	Set a single row lower bound Use -COIN_DBL_MAX for -infinity. More...

virtual void	setRowUpper (int elementIndex, double elementValue)
	Set a single row upper bound Use COIN_DBL_MAX for infinity. More...

virtual void	setRowBounds (int elementIndex, double lower, double upper)
	Set a single row lower and upper bound. More...

virtual void	setRowType (int index, char sense, double rightHandSide, double range)
	Set the type of a single row More...

virtual void	setRowSetBounds (const int indexFirst, const int indexLast, const double *boundList)
	Set the bounds on a number of rows simultaneously The default implementation just invokes setRowLower() and setRowUpper() over and over again. More...

virtual void	setRowSetTypes (const int indexFirst, const int indexLast, const char senseList, const double rhsList, const double *rangeList)
	Set the type of a number of rows simultaneously The default implementation just invokes setRowType() over and over again. More...

Integrality related changing methods
virtual void	setContinuous (int index)
	Set the index-th variable to be a continuous variable. More...

virtual void	setInteger (int index)
	Set the index-th variable to be an integer variable. More...

virtual void	setContinuous (const int *indices, int len)
	Set the variables listed in indices (which is of length len) to be continuous variables. More...

virtual void	setInteger (const int *indices, int len)
	Set the variables listed in indices (which is of length len) to be integer variables. More...

Methods to expand a problem.<br>
Note that if a column is added then by default it will correspond to a continuous variable.
virtual void	addCol (const CoinPackedVectorBase &vec, const double collb, const double colub, const double obj)
	Add a column (primal variable) to the problem. More...

virtual void	addCols (const int numcols, const CoinPackedVectorBase const cols, const double collb, const double colub, const double *obj)
	Add a set of columns (primal variables) to the problem. More...

virtual void	deleteCols (const int num, const int *colIndices)
	Remove a set of columns (primal variables) from the problem. More...

virtual void	addRow (const CoinPackedVectorBase &vec, const double rowlb, const double rowub)
	Add a row (constraint) to the problem. More...

virtual void	addRow (const CoinPackedVectorBase &vec, const char rowsen, const double rowrhs, const double rowrng)
	Add a row (constraint) to the problem. More...

virtual void	addRows (const int numrows, const CoinPackedVectorBase const rows, const double rowlb, const double rowub)

virtual void	addRows (const int numrows, const CoinPackedVectorBase const rows, const char rowsen, const double rowrhs, const double *rowrng)
	Add a set of rows (constraints) to the problem. More...

virtual void	deleteRows (const int num, const int *rowIndices)
	Delete a set of rows (constraints) from the problem. More...

Methods to input a problem
virtual void	loadProblem (const CoinPackedMatrix &matrix, const double collb, const double colub, const double obj, const double rowlb, const double *rowub)
	Load in an problem by copying the arguments (the constraints on the rows are given by lower and upper bounds). More...

virtual void	assignProblem (CoinPackedMatrix &matrix, double &collb, double &colub, double &obj, double &rowlb, double &rowub)
	Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by lower and upper bounds). More...

virtual void	loadProblem (const CoinPackedMatrix &matrix, const double collb, const double colub, const double obj, const char rowsen, const double rowrhs, const double rowrng)
	Load in an problem by copying the arguments (the constraints on the rows are given by sense/rhs/range triplets). More...

virtual void	assignProblem (CoinPackedMatrix &matrix, double &collb, double &colub, double &obj, char &rowsen, double &rowrhs, double *&rowrng)
	Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by sense/rhs/range triplets). More...

virtual void	loadProblem (const int numcols, const int numrows, const int start, const int index, const double value, const double collb, const double colub, const double obj, const double rowlb, const double rowub)
	Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps). More...

virtual void	loadProblem (const int numcols, const int numrows, const int start, const int index, const double value, const double collb, const double colub, const double obj, const char rowsen, const double rowrhs, const double *rowrng)
	Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps). More...

virtual int	readMps (const char filename, const char extension="mps")
	Read an mps file from the given filename. More...

virtual void	writeMps (const char filename, const char extension="mps", double objSense=0.0) const
	Write the problem into an mps file of the given filename. More...

OSL specific public interfaces
VOL_problem *	volprob ()
	Get pointer to Vol model. More...

Constructors and destructors
	OsiTestSolverInterface ()
	Default Constructor. More...

virtual OsiSolverInterface *	clone (bool copyData=true) const
	Clone. More...

	OsiTestSolverInterface (const OsiTestSolverInterface &)
	Copy constructor. More...

OsiTestSolverInterface &	operator= (const OsiTestSolverInterface &rhs)
	Assignment operator. More...

virtual	~OsiTestSolverInterface ()
	Destructor. More...

Public Member Functions inherited from OsiSolverInterface
virtual bool	setHintParam (OsiHintParam key, bool yesNo=true, OsiHintStrength strength=OsiHintTry, void *=NULL)
	Set a hint parameter. More...

virtual bool	getHintParam (OsiHintParam key, bool &yesNo, OsiHintStrength &strength, void *&otherInformation) const
	Get a hint parameter (all information) More...

virtual bool	getHintParam (OsiHintParam key, bool &yesNo, OsiHintStrength &strength) const
	Get a hint parameter (sense and strength only) More...

virtual bool	getHintParam (OsiHintParam key, bool &yesNo) const
	Get a hint parameter (sense only) More...

void	copyParameters (OsiSolverInterface &rhs)
	Copy all parameters in this section from one solver to another. More...

double	getIntegerTolerance () const
	Return the integrality tolerance of the underlying solver. More...

virtual CoinWarmStart *	getPointerToWarmStart (bool &mustDelete)
	Get warm start information. More...

virtual int	getNumIntegers () const
	Get the number of integer variables. More...

virtual bool	isBinary (int colIndex) const
	Return true if the variable is binary. More...

virtual bool	isInteger (int colIndex) const
	Return true if the variable is integer. More...

virtual bool	isIntegerNonBinary (int colIndex) const
	Return true if the variable is general integer. More...

virtual bool	isFreeBinary (int colIndex) const
	Return true if the variable is binary and not fixed. More...

const char *	columnType (bool refresh=false) const
	Return an array[getNumCols()] of column types. More...

virtual const char *	getColType (bool refresh=false) const
	Return an array[getNumCols()] of column types. More...

virtual CoinPackedMatrix *	getMutableMatrixByRow () const
	Get a pointer to a mutable row-wise copy of the matrix. More...

virtual CoinPackedMatrix *	getMutableMatrixByCol () const
	Get a pointer to a mutable column-wise copy of the matrix. More...

virtual const double *	getStrictColSolution ()
	Get a pointer to an array[getNumCols()] of primal variable values guaranteed to be between the column lower and upper bounds. More...

virtual OsiVectorInt	getFractionalIndices (const double etol=1.e-05) const
	Get vector of indices of primal variables which are integer variables but have fractional values in the current solution. More...

virtual void	setObjCoeffSet (const int indexFirst, const int indexLast, const double *coeffList)
	Set a set of objective function coefficients. More...

virtual void	setObjective (const double *array)
	Set the objective coefficients for all columns. More...

virtual void	setColLower (const double *array)
	Set the lower bounds for all columns. More...

virtual void	setColUpper (const double *array)
	Set the upper bounds for all columns. More...

virtual int	reducedCostFix (double gap, bool justInteger=true)
	Fix variables at bound based on reduced cost. More...

virtual std::string	dfltRowColName (char rc, int ndx, unsigned digits=7) const
	Generate a standard name of the form Rnnnnnnn or Cnnnnnnn. More...

virtual std::string	getObjName (unsigned maxLen=static_cast< unsigned >(std::string::npos)) const
	Return the name of the objective function. More...

virtual void	setObjName (std::string name)
	Set the name of the objective function. More...

virtual std::string	getRowName (int rowIndex, unsigned maxLen=static_cast< unsigned >(std::string::npos)) const
	Return the name of the row. More...

virtual const OsiNameVec &	getRowNames ()
	Return a pointer to a vector of row names. More...

virtual void	setRowName (int ndx, std::string name)
	Set a row name. More...

virtual void	setRowNames (OsiNameVec &srcNames, int srcStart, int len, int tgtStart)
	Set multiple row names. More...

virtual void	deleteRowNames (int tgtStart, int len)
	Delete len row names starting at index tgtStart. More...

virtual std::string	getColName (int colIndex, unsigned maxLen=static_cast< unsigned >(std::string::npos)) const
	Return the name of the column. More...

virtual const OsiNameVec &	getColNames ()
	Return a pointer to a vector of column names. More...

virtual void	setColName (int ndx, std::string name)
	Set a column name. More...

virtual void	setColNames (OsiNameVec &srcNames, int srcStart, int len, int tgtStart)
	Set multiple column names. More...

virtual void	deleteColNames (int tgtStart, int len)
	Delete len column names starting at index tgtStart. More...

void	setRowColNames (const CoinMpsIO &mps)
	Set row and column names from a CoinMpsIO object. More...

void	setRowColNames (CoinModel &mod)
	Set row and column names from a CoinModel object. More...

void	setRowColNames (CoinLpIO &mod)
	Set row and column names from a CoinLpIO object. More...

virtual void	addCol (const CoinPackedVectorBase &vec, const double collb, const double colub, const double obj, std::string name)
	Add a named column (primal variable) to the problem. More...

virtual void	addCol (int numberElements, const int rows, const double elements, const double collb, const double colub, const double obj)
	Add a column (primal variable) to the problem. More...

virtual void	addCol (int numberElements, const int rows, const double elements, const double collb, const double colub, const double obj, std::string name)
	Add a named column (primal variable) to the problem. More...

virtual void	addCols (const int numcols, const int columnStarts, const int rows, const double elements, const double collb, const double colub, const double obj)
	Add a set of columns (primal variables) to the problem. More...

void	addCols (const CoinBuild &buildObject)
	Add columns using a CoinBuild object. More...

int	addCols (CoinModel &modelObject)
	Add columns from a model object. More...

virtual void	addRow (const CoinPackedVectorBase &vec, const double rowlb, const double rowub, std::string name)
	Add a named row (constraint) to the problem. More...

virtual void	addRow (const CoinPackedVectorBase &vec, const char rowsen, const double rowrhs, const double rowrng, std::string name)
	Add a named row (constraint) to the problem. More...

virtual void	addRow (int numberElements, const int columns, const double element, const double rowlb, const double rowub)

virtual void	addRows (const int numrows, const int rowStarts, const int columns, const double element, const double rowlb, const double *rowub)
	Add a set of rows (constraints) to the problem. More...

void	addRows (const CoinBuild &buildObject)
	Add rows using a CoinBuild object. More...

int	addRows (CoinModel &modelObject)

virtual void	replaceMatrixOptional (const CoinPackedMatrix &)
	Replace the constraint matrix. More...

virtual void	replaceMatrix (const CoinPackedMatrix &)
	Replace the constraint matrix. More...

virtual void	saveBaseModel ()
	Save a copy of the base model. More...

virtual void	restoreBaseModel (int numberRows)
	Reduce the constraint system to the specified number of constraints. More...

virtual ApplyCutsReturnCode	applyCuts (const OsiCuts &cs, double effectivenessLb=0.0)
	Apply a collection of cuts. More...

virtual void	applyRowCuts (int numberCuts, const OsiRowCut *cuts)
	Apply a collection of row cuts which are all effective. More...

virtual void	applyRowCuts (int numberCuts, const OsiRowCut **cuts)
	Apply a collection of row cuts which are all effective. More...

void	deleteBranchingInfo (int numberDeleted, const int *which)
	Deletes branching information before columns deleted. More...

virtual int	loadFromCoinModel (CoinModel &modelObject, bool keepSolution=false)
	Load a model from a CoinModel object. Return the number of errors encountered. More...

virtual int	readMps (const char filename, const char extension, int &numberSets, CoinSet **&sets)
	Read a problem in MPS format from the given full filename. More...

virtual int	readGMPL (const char filename, const char dataname=NULL)
	Read a problem in GMPL format from the given filenames. More...

int	writeMpsNative (const char filename, const char rowNames, const char columnNames, int formatType=0, int numberAcross=2, double objSense=0.0, int numberSOS=0, const CoinSet setInfo=NULL) const
	Write the problem in MPS format to the specified file with more control over the output. More...

virtual void	writeLp (const char filename, const char extension="lp", double epsilon=1e-5, int numberAcross=10, int decimals=5, double objSense=0.0, bool useRowNames=true) const
	Write the problem into an Lp file of the given filename with the specified extension. More...

virtual void	writeLp (FILE *fp, double epsilon=1e-5, int numberAcross=10, int decimals=5, double objSense=0.0, bool useRowNames=true) const
	Write the problem into the file pointed to by the parameter fp. More...

int	writeLpNative (const char filename, char const const const rowNames, char const const *const columnNames, const double epsilon=1.0e-5, const int numberAcross=10, const int decimals=5, const double objSense=0.0, const bool useRowNames=true) const
	Write the problem into an Lp file. More...

int	writeLpNative (FILE fp, char const const const rowNames, char const const *const columnNames, const double epsilon=1.0e-5, const int numberAcross=10, const int decimals=5, const double objSense=0.0, const bool useRowNames=true) const
	Write the problem into the file pointed to by the parameter fp. More...

virtual int	readLp (const char *filename, const double epsilon=1e-5)
	Read file in LP format from file with name filename. More...

int	readLp (FILE *fp, const double epsilon=1e-5)
	Read file in LP format from the file pointed to by fp. More...

int	differentModel (OsiSolverInterface &other, bool ignoreNames=true)
	Check two models against each other. More...

void	setApplicationData (void *appData)
	Set application data. More...

void	setAuxiliaryInfo (OsiAuxInfo *auxiliaryInfo)
	Create a clone of an Auxiliary Information object. More...

void *	getApplicationData () const
	Get application data. More...

OsiAuxInfo *	getAuxiliaryInfo () const
	Get pointer to auxiliary info object. More...

virtual void	passInMessageHandler (CoinMessageHandler *handler)
	Pass in a message handler. More...

void	newLanguage (CoinMessages::Language language)
	Set language. More...

void	setLanguage (CoinMessages::Language language)
	Pass in a message handler. More...

CoinMessageHandler *	messageHandler () const
	Return a pointer to the current message handler. More...

CoinMessages	messages ()
	Return the current set of messages. More...

CoinMessages *	messagesPointer ()
	Return a pointer to the current set of messages. More...

bool	defaultHandler () const
	Return true if default handler. More...

void	findIntegers (bool justCount)
	Identify integer variables and create corresponding objects. More...

virtual int	findIntegersAndSOS (bool justCount)
	Identify integer variables and SOS and create corresponding objects. More...

int	numberObjects () const
	Get the number of objects. More...

void	setNumberObjects (int number)
	Set the number of objects. More...

OsiObject **	objects () const
	Get the array of objects. More...

const OsiObject *	object (int which) const
	Get the specified object. More...

OsiObject *	modifiableObject (int which) const
	Get the specified object. More...

void	deleteObjects ()
	Delete all object information. More...

void	addObjects (int numberObjects, OsiObject **objects)
	Add in object information. More...

double	forceFeasible ()
	Use current solution to set bounds so current integer feasible solution will stay feasible. More...

virtual void	activateRowCutDebugger (const char *modelName)
	Activate the row cut debugger. More...

virtual void	activateRowCutDebugger (const double *solution, bool enforceOptimality=true)
	Activate the row cut debugger using a full solution array. More...

const OsiRowCutDebugger *	getRowCutDebugger () const
	Get the row cut debugger provided the solution known to the debugger is within the feasible region held in the solver. More...

OsiRowCutDebugger *	getRowCutDebuggerAlways () const
	Get the row cut debugger object. More...

virtual int	canDoSimplexInterface () const
	Return the simplex implementation level. More...

virtual void	enableFactorization () const
	Prepare the solver for the use of tableau access methods. More...

virtual void	disableFactorization () const
	Undo the effects of enableFactorization. More...

virtual bool	basisIsAvailable () const
	Check if an optimal basis is available. More...

bool	optimalBasisIsAvailable () const
	Synonym for basisIsAvailable. More...

virtual void	getBasisStatus (int cstat, int rstat) const
	Retrieve status information for column and row variables. More...

virtual int	setBasisStatus (const int cstat, const int rstat)
	Set the status of column and row variables and update the basis factorization and solution. More...

virtual void	getReducedGradient (double columnReducedCosts, double duals, const double *c) const
	Calculate duals and reduced costs for the given objective coefficients. More...

virtual void	getBInvARow (int row, double z, double slack=NULL) const
	Get a row of the tableau. More...

virtual void	getBInvRow (int row, double *z) const
	Get a row of the basis inverse. More...

virtual void	getBInvACol (int col, double *vec) const
	Get a column of the tableau. More...

virtual void	getBInvCol (int col, double *vec) const
	Get a column of the basis inverse. More...

virtual void	getBasics (int *index) const
	Get indices of basic variables. More...

virtual void	enableSimplexInterface (bool doingPrimal)
	Enables normal operation of subsequent functions. More...

virtual void	disableSimplexInterface ()
	Undo whatever setting changes the above method had to make. More...

virtual int	pivot (int colIn, int colOut, int outStatus)
	Perform a pivot by substituting a colIn for colOut in the basis. More...

virtual int	primalPivotResult (int colIn, int sign, int &colOut, int &outStatus, double &t, CoinPackedVector *dx)
	Obtain a result of the primal pivot Outputs: colOut – leaving column, outStatus – its status, t – step size, and, if dx!=NULL, *dx – primal ray direction. More...

virtual int	dualPivotResult (int &colIn, int &sign, int colOut, int outStatus, double &t, CoinPackedVector *dx)
	Obtain a result of the dual pivot (similar to the previous method) Differences: entering variable and a sign of its change are now the outputs, the leaving variable and its statuts – the inputs If dx!=NULL, then *dx contains dual ray Return code: same. More...

	OsiSolverInterface ()
	Default Constructor. More...

	OsiSolverInterface (const OsiSolverInterface &)
	Copy constructor. More...

OsiSolverInterface &	operator= (const OsiSolverInterface &rhs)
	Assignment operator. More...

virtual	~OsiSolverInterface ()
	Destructor. More...

virtual void	reset ()
	Reset the solver interface. More...

Public Member Functions inherited from VOL_user_hooks
virtual	~VOL_user_hooks ()

Protected Member Functions
Helper methods for problem input
void	initFromRlbRub (const int rownum, const double rowlb, const double rowub)

void	initFromRhsSenseRange (const int rownum, const char rowsen, const double rowrhs, const double *rowrng)

void	initFromClbCubObj (const int colnum, const double collb, const double colub, const double *obj)

Protected methods
virtual void	applyRowCut (const OsiRowCut &rc)
	Apply a row cut (append to constraint matrix). More...

virtual void	applyColCut (const OsiColCut &cc)
	Apply a column cut (adjust one or more bounds). More...

Protected Member Functions inherited from OsiSolverInterface
void	convertBoundToSense (const double lower, const double upper, char &sense, double &right, double &range) const
	A quick inlined function to convert from the lb/ub style of constraint definition to the sense/rhs/range style. More...

void	convertSenseToBound (const char sense, const double right, const double range, double &lower, double &upper) const
	A quick inlined function to convert from the sense/rhs/range style of constraint definition to the lb/ub style. More...

template<class T >
T	forceIntoRange (const T value, const T lower, const T upper) const
	A quick inlined function to force a value to be between a minimum and a maximum value. More...

void	setInitialData ()
	Set OsiSolverInterface object state for default constructor. More...

Private Member Functions
Methods of <code>VOL_user_hooks</code>
virtual int	compute_rc (const VOL_dvector &u, VOL_dvector &rc)
	compute reduced costs More...

virtual int	solve_subproblem (const VOL_dvector &dual, const VOL_dvector &rc, double &lcost, VOL_dvector &x, VOL_dvector &v, double &pcost)
	Solve the subproblem for the subgradient step. More...

virtual int	heuristics (const VOL_problem &, const VOL_dvector &, double &heur_val)
	Starting from the primal vector x, run a heuristic to produce an integer solution. More...

Private helper methods
void	updateRowMatrix_ () const
	Update the row ordered matrix from the column ordered one. More...

void	updateColMatrix_ () const
	Update the column ordered matrix from the row ordered one. More...

void	checkData_ () const
	Test whether the Volume Algorithm can be applied to the given problem. More...

void	compute_rc_ (const double u, double rc) const
	Compute the reduced costs (`rc`) with respect to the dual values given in `u`. More...

void	gutsOfDestructor_ ()
	A method deleting every member data. More...

void	rowRimAllocator_ ()
	A method allocating sufficient space for the rim vectors corresponding to the rows. More...

void	colRimAllocator_ ()
	A method allocating sufficient space for the rim vectors corresponding to the columns. More...

void	rowRimResize_ (const int newSize)
	Reallocate the rim arrays corresponding to the rows. More...

void	colRimResize_ (const int newSize)
	Reallocate the rim arrays corresponding to the columns. More...

void	convertBoundsToSenses_ ()
	For each row convert LB/UB style row constraints to sense/rhs style. More...

void	convertSensesToBounds_ ()
	For each row convert sense/rhs style row constraints to LB/UB style. More...

bool	test_zero_one_minusone_ (const CoinPackedMatrix &m) const
	test whether the given matrix is 0/1/-1 entries only. More...

Private Attributes
double	objsense_
	Sense of objective (1 for min; -1 for max) More...

double *	rowpriceHotStart_
	An array to store the hotstart information between solveHotStart() calls. More...

int	maxNumrows_
	allocated size of the row related rim vectors More...

int	maxNumcols_
	allocated size of the column related rim vectors More...

VOL_problem	volprob_
	The volume solver. More...

The problem matrix in row and column ordered forms <br>
Note that at least one of the matrices is always current.
bool	rowMatrixCurrent_
	A flag indicating whether the row ordered matrix is up-to-date. More...

CoinPackedMatrix	rowMatrix_
	The problem matrix in a row ordered form. More...

bool	colMatrixCurrent_
	A flag indicating whether the column ordered matrix is up-to-date. More...

CoinPackedMatrix	colMatrix_
	The problem matrix in a column ordered form. More...

Data members used when 0/1/-1 matrix is detected
bool	isZeroOneMinusOne_
	An indicator whether the matrix is 0/1/-1. More...

OsiVolMatrixOneMinusOne_ *	rowMatrixOneMinusOne_
	The row ordered matrix without the elements. More...

OsiVolMatrixOneMinusOne_ *	colMatrixOneMinusOne_
	The column ordered matrix without the elements. More...

The rim vectors
double *	colupper_
	Pointer to dense vector of structural variable upper bounds. More...

double *	collower_
	Pointer to dense vector of structural variable lower bounds. More...

bool *	continuous_
	Pointer to dense vector of bool to indicate if column is continuous. More...

double *	rowupper_
	Pointer to dense vector of slack variable upper bounds. More...

double *	rowlower_
	Pointer to dense vector of slack variable lower bounds. More...

char *	rowsense_
	Pointer to dense vector of row sense indicators. More...

double *	rhs_
	Pointer to dense vector of row right-hand side values. More...

double *	rowrange_
	Pointer to dense vector of slack upper bounds for range constraints (undefined for non-range rows). More...

double *	objcoeffs_
	Pointer to dense vector of objective coefficients. More...

The solution
double *	colsol_
	Pointer to dense vector of primal structural variable values. More...

double *	rowprice_
	Pointer to dense vector of dual row variable values. More...

double *	rc_
	Pointer to dense vector of reduced costs. More...

double *	lhs_
	Pointer to dense vector of left hand sides (row activity levels) More...

double	lagrangeanCost_
	The Lagrangean cost, a lower bound on the objective value. More...

Friends
void	OsiTestSolverInterfaceUnitTest (const std::string &mpsDir, const std::string &netlibDir)
	A function that tests the methods in the OsiTestSolverInterface class. More...

Additional Inherited Members
Public Types inherited from OsiSolverInterface
typedef std::vector< std::string >	OsiNameVec
	Data type for name vectors. More...

Protected Attributes inherited from OsiSolverInterface
OsiRowCutDebugger *	rowCutDebugger_
	Pointer to row cut debugger object. More...

CoinMessageHandler *	handler_
	Message handler. More...

bool	defaultHandler_
	Flag to say if the currrent handler is the default handler. More...

CoinMessages	messages_
	Messages. More...

int	numberIntegers_
	Number of integers. More...

int	numberObjects_
	Total number of objects. More...

OsiObject **	object_
	Integer and ... information (integer info normally at beginning) More...

char *	columnType_
	Column type 0 - continuous 1 - binary (may get fixed later) 2 - general integer (may get fixed later) More...

Detailed Description

Vol(ume) Solver Interface.

Instantiation of OsiTestSolverInterface for the Volume Algorithm

Definition at line 27 of file OsiTestSolverInterface.hpp.

Constructor & Destructor Documentation

OsiTestSolverInterface::OsiTestSolverInterface ( )

Default Constructor.

OsiTestSolverInterface::OsiTestSolverInterface ( const OsiTestSolverInterface & )

Copy constructor.

virtual OsiTestSolverInterface::~OsiTestSolverInterface ( )

virtual

Destructor.

Member Function Documentation

virtual void OsiTestSolverInterface::initialSolve ( )

virtual

Solve initial LP relaxation.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::resolve ( )

virtual

Resolve an LP relaxation after problem modification.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::branchAndBound ( )

inlinevirtual

Invoke solver's built-in enumeration algorithm.

Implements OsiSolverInterface.

Definition at line 63 of file OsiTestSolverInterface.hpp.

bool OsiTestSolverInterface::setIntParam	(	OsiIntParam	key,
		int	value
	)

virtual

Set an integer parameter.

Reimplemented from OsiSolverInterface.

bool OsiTestSolverInterface::setDblParam	(	OsiDblParam	key,
		double	value
	)

virtual

Set a double parameter.

Reimplemented from OsiSolverInterface.

bool OsiTestSolverInterface::setStrParam	(	OsiStrParam	key,
		const std::string &	value
	)

virtual

Set a string parameter.

Reimplemented from OsiSolverInterface.

bool OsiTestSolverInterface::getIntParam	(	OsiIntParam	key,
		int &	value
	)		const

virtual

Get an integer parameter.

Reimplemented from OsiSolverInterface.

bool OsiTestSolverInterface::getDblParam	(	OsiDblParam	key,
		double &	value
	)		const

virtual

Get a double parameter.

Reimplemented from OsiSolverInterface.

bool OsiTestSolverInterface::getStrParam	(	OsiStrParam	key,
		std::string &	value
	)		const

virtual

Get a string parameter.

Reimplemented from OsiSolverInterface.

virtual bool OsiTestSolverInterface::isAbandoned ( ) const

virtual

Are there a numerical difficulties?

Implements OsiSolverInterface.

virtual bool OsiTestSolverInterface::isProvenOptimal ( ) const

virtual

Is optimality proven?

Implements OsiSolverInterface.

virtual bool OsiTestSolverInterface::isProvenPrimalInfeasible ( ) const

virtual

Is primal infeasiblity proven?

Implements OsiSolverInterface.

virtual bool OsiTestSolverInterface::isProvenDualInfeasible ( ) const

virtual

Is dual infeasiblity proven?

Implements OsiSolverInterface.

virtual bool OsiTestSolverInterface::isPrimalObjectiveLimitReached ( ) const

virtual

Is the given primal objective limit reached?

Reimplemented from OsiSolverInterface.

virtual bool OsiTestSolverInterface::isDualObjectiveLimitReached ( ) const

virtual

Is the given dual objective limit reached?

Reimplemented from OsiSolverInterface.

virtual bool OsiTestSolverInterface::isIterationLimitReached ( ) const

virtual

Iteration limit reached?

Implements OsiSolverInterface.

virtual CoinWarmStart* OsiTestSolverInterface::getEmptyWarmStart ( ) const

virtual

Get an empty warm start object.

This routine returns an empty warm start object. Its purpose is to provide a way to give a client a warm start object of the appropriate type, which can resized and modified as desired.

Implements OsiSolverInterface.

virtual CoinWarmStart* OsiTestSolverInterface::getWarmStart ( ) const

virtual

Get warmstarting information.

Implements OsiSolverInterface.

virtual bool OsiTestSolverInterface::setWarmStart ( const CoinWarmStart * warmstart )

virtual

Set warmstarting information.

Return true/false depending on whether the warmstart information was accepted or not.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::markHotStart ( )

virtual

Create a hotstart point of the optimization process.

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::solveFromHotStart ( )

virtual

Optimize starting from the hotstart.

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::unmarkHotStart ( )

virtual

Delete the snapshot.

Reimplemented from OsiSolverInterface.

virtual int OsiTestSolverInterface::getNumCols ( ) const

inlinevirtual

Get number of columns.

Implements OsiSolverInterface.

Definition at line 167 of file OsiTestSolverInterface.hpp.

virtual int OsiTestSolverInterface::getNumRows ( ) const

inlinevirtual

Get number of rows.

Implements OsiSolverInterface.

Definition at line 172 of file OsiTestSolverInterface.hpp.

virtual int OsiTestSolverInterface::getNumElements ( ) const

inlinevirtual

Get number of nonzero elements.

Implements OsiSolverInterface.

Definition at line 177 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getColLower ( ) const

inlinevirtual

Get pointer to array[getNumCols()] of column lower bounds.

Implements OsiSolverInterface.

Definition at line 182 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getColUpper ( ) const

inlinevirtual

Get pointer to array[getNumCols()] of column upper bounds.

Implements OsiSolverInterface.

Definition at line 185 of file OsiTestSolverInterface.hpp.

virtual const char* OsiTestSolverInterface::getRowSense ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of row constraint senses.

'L' <= constraint
'E' = constraint
'G' >= constraint
'R' ranged constraint
'N' free constraint

Implements OsiSolverInterface.

Definition at line 196 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRightHandSide ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of rows right-hand sides.

if rowsense()[i] == 'L' then rhs()[i] == rowupper()[i]
if rowsense()[i] == 'G' then rhs()[i] == rowlower()[i]
if rowsense()[i] == 'R' then rhs()[i] == rowupper()[i]
if rowsense()[i] == 'N' then rhs()[i] == 0.0

Implements OsiSolverInterface.

Definition at line 206 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRowRange ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of row ranges.

if rowsense()[i] == 'R' then rowrange()[i] == rowupper()[i] - rowlower()[i]
if rowsense()[i] != 'R' then rowrange()[i] is undefined

Implements OsiSolverInterface.

Definition at line 216 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRowLower ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of row lower bounds.

Implements OsiSolverInterface.

Definition at line 219 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRowUpper ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of row upper bounds.

Implements OsiSolverInterface.

Definition at line 222 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getObjCoefficients ( ) const

inlinevirtual

Get pointer to array[getNumCols()] of objective function coefficients.

Implements OsiSolverInterface.

Definition at line 225 of file OsiTestSolverInterface.hpp.

virtual double OsiTestSolverInterface::getObjSense ( ) const

inlinevirtual

Get objective function sense (1 for min (default), -1 for max)

Implements OsiSolverInterface.

Definition at line 228 of file OsiTestSolverInterface.hpp.

virtual bool OsiTestSolverInterface::isContinuous ( int colNumber ) const

virtual

Return true if column is continuous.

Implements OsiSolverInterface.

virtual const CoinPackedMatrix* OsiTestSolverInterface::getMatrixByRow ( ) const

virtual

Get pointer to row-wise copy of matrix.

Implements OsiSolverInterface.

virtual const CoinPackedMatrix* OsiTestSolverInterface::getMatrixByCol ( ) const

virtual

Get pointer to column-wise copy of matrix.

Implements OsiSolverInterface.

virtual double OsiTestSolverInterface::getInfinity ( ) const

inlinevirtual

Get solver's value for infinity.

Implements OsiSolverInterface.

Definition at line 257 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getColSolution ( ) const

inlinevirtual

Get pointer to array[getNumCols()] of primal solution vector.

Implements OsiSolverInterface.

Definition at line 263 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRowPrice ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of dual prices.

Implements OsiSolverInterface.

Definition at line 266 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getReducedCost ( ) const

inlinevirtual

Get a pointer to array[getNumCols()] of reduced costs.

Implements OsiSolverInterface.

Definition at line 269 of file OsiTestSolverInterface.hpp.

virtual const double* OsiTestSolverInterface::getRowActivity ( ) const

inlinevirtual

Get pointer to array[getNumRows()] of row activity levels (constraint matrix times the solution vector.

Implements OsiSolverInterface.

Definition at line 273 of file OsiTestSolverInterface.hpp.

virtual double OsiTestSolverInterface::getObjValue ( ) const

inlinevirtual

Get objective function value.

Implements OsiSolverInterface.

Definition at line 276 of file OsiTestSolverInterface.hpp.

virtual int OsiTestSolverInterface::getIterationCount ( ) const

inlinevirtual

Get how many iterations it took to solve the problem (whatever "iteration" mean to the solver.

Implements OsiSolverInterface.

Definition at line 287 of file OsiTestSolverInterface.hpp.

virtual std::vector<double*> OsiTestSolverInterface::getDualRays	(	int	maxNumRays,
		bool	fullRay = `false`
	)		const

virtual

Get as many dual rays as the solver can provide.

(In case of proven primal infeasibility there should be at least one.)

The first getNumRows() ray components will always be associated with the row duals (as returned by getRowPrice()). If fullRay is true, the final getNumCols() entries will correspond to the ray components associated with the nonbasic variables. If the full ray is requested and the method cannot provide it, it will throw an exception.

NOTE for implementers of solver interfaces:
The double pointers in the vector should point to arrays of length getNumRows() and they should be allocated via new[].

NOTE for users of solver interfaces:
It is the user's responsibility to free the double pointers in the vector using delete[].

Implements OsiSolverInterface.

virtual std::vector<double*> OsiTestSolverInterface::getPrimalRays ( int maxNumRays ) const

virtual

Get as many primal rays as the solver can provide.

(In case of proven dual infeasibility there should be at least one.)

NOTE for implementers of solver interfaces:
The double pointers in the vector should point to arrays of length getNumCols() and they should be allocated via new[].

NOTE for users of solver interfaces:
It is the user's responsibility to free the double pointers in the vector using delete[].

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::setObjCoeff	(	int	elementIndex,
		double	elementValue
	)

inlinevirtual

Set an objective function coefficient.

Implements OsiSolverInterface.

Definition at line 338 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setColLower	(	int	elementIndex,
		double	elementValue
	)

inlinevirtual

Set a single column lower bound
Use -COIN_DBL_MAX for -infinity.

Implements OsiSolverInterface.

Definition at line 345 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setColUpper	(	int	elementIndex,
		double	elementValue
	)

inlinevirtual

Set a single column upper bound
Use COIN_DBL_MAX for infinity.

Implements OsiSolverInterface.

Definition at line 352 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setColBounds	(	int	elementIndex,
		double	lower,
		double	upper
	)

inlinevirtual

Set a single column lower and upper bound.

Reimplemented from OsiSolverInterface.

Definition at line 357 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setColSetBounds	(	const int *	indexFirst,
		const int *	indexLast,
		const double *	boundList
	)

virtual

Set the bounds on a number of columns simultaneously
The default implementation just invokes setColLower() and setColUpper() over and over again.

Parameters

indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the variables whose either bound changes
boundList	the new lower/upper bound pairs for the variables

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::setRowLower	(	int	elementIndex,
		double	elementValue
	)

inlinevirtual

Set a single row lower bound
Use -COIN_DBL_MAX for -infinity.

Implements OsiSolverInterface.

Definition at line 377 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setRowUpper	(	int	elementIndex,
		double	elementValue
	)

inlinevirtual

Set a single row upper bound
Use COIN_DBL_MAX for infinity.

Implements OsiSolverInterface.

Definition at line 386 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setRowBounds	(	int	elementIndex,
		double	lower,
		double	upper
	)

inlinevirtual

Set a single row lower and upper bound.

Reimplemented from OsiSolverInterface.

Definition at line 394 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setRowType	(	int	index,
		char	sense,
		double	rightHandSide,
		double	range
	)

inlinevirtual

Set the type of a single row

Implements OsiSolverInterface.

Definition at line 404 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setRowSetBounds	(	const int *	indexFirst,
		const int *	indexLast,
		const double *	boundList
	)

virtual

Set the bounds on a number of rows simultaneously
The default implementation just invokes setRowLower() and setRowUpper() over and over again.

Parameters

indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the constraints whose either bound changes
boundList	the new lower/upper bound pairs for the constraints

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::setRowSetTypes	(	const int *	indexFirst,
		const int *	indexLast,
		const char *	senseList,
		const double *	rhsList,
		const double *	rangeList
	)

virtual

Set the type of a number of rows simultaneously
The default implementation just invokes setRowType() over and over again.

Parameters

indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the constraints whose any characteristics changes
senseList	the new senses
rhsList	the new right hand sides
rangeList	the new ranges

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::setContinuous ( int index )

virtual

Set the index-th variable to be a continuous variable.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::setInteger ( int index )

virtual

Set the index-th variable to be an integer variable.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::setContinuous	(	const int *	indices,
		int	len
	)

virtual

Set the variables listed in indices (which is of length len) to be continuous variables.

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::setInteger	(	const int *	indices,
		int	len
	)

virtual

Set the variables listed in indices (which is of length len) to be integer variables.

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::setObjSense ( double s )

inlinevirtual

Set objective function sense (1 for min (default), -1 for max,)

Implements OsiSolverInterface.

Definition at line 459 of file OsiTestSolverInterface.hpp.

virtual void OsiTestSolverInterface::setColSolution ( const double * colsol )

virtual

Set the primal solution column values.

colsol[numcols()] is an array of values of the problem column variables. These values are copied to memory owned by the solver object or the solver. They will be returned as the result of colsol() until changed by another call to setColsol() or by a call to any solver routine. Whether the solver makes use of the solution in any way is solver-dependent.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::setRowPrice ( const double * rowprice )

virtual

Set dual solution vector.

rowprice[numrows()] is an array of values of the problem row dual variables. These values are copied to memory owned by the solver object or the solver. They will be returned as the result of rowprice() until changed by another call to setRowprice() or by a call to any solver routine. Whether the solver makes use of the solution in any way is solver-dependent.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::addCol	(	const CoinPackedVectorBase &	vec,
		const double	collb,
		const double	colub,
		const double	obj
	)

virtual

Add a column (primal variable) to the problem.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::addCols	(	const int	numcols,
		const CoinPackedVectorBase const	cols,
		const double *	collb,
		const double *	colub,
		const double *	obj
	)

virtual

Add a set of columns (primal variables) to the problem.

The default implementation simply makes repeated calls to addCol().

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::deleteCols	(	const int	num,
		const int *	colIndices
	)

virtual

Remove a set of columns (primal variables) from the problem.

The solver interface for a basis-oriented solver will maintain valid warm start information if all deleted variables are nonbasic.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::addRow	(	const CoinPackedVectorBase &	vec,
		const double	rowlb,
		const double	rowub
	)

virtual

Add a row (constraint) to the problem.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::addRow	(	const CoinPackedVectorBase &	vec,
		const char	rowsen,
		const double	rowrhs,
		const double	rowrng
	)

virtual

Add a row (constraint) to the problem.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::addRows	(	const int	numrows,
		const CoinPackedVectorBase const	rows,
		const double *	rowlb,
		const double *	rowub
	)

virtual

Add a set of rows (constraints) to the problem.

The default implementation simply makes repeated calls to addRow().

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::addRows	(	const int	numrows,
		const CoinPackedVectorBase const	rows,
		const char *	rowsen,
		const double *	rowrhs,
		const double *	rowrng
	)

virtual

Add a set of rows (constraints) to the problem.

The default implementation simply makes repeated calls to addRow().

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::deleteRows	(	const int	num,
		const int *	rowIndices
	)

virtual

Delete a set of rows (constraints) from the problem.

The solver interface for a basis-oriented solver will maintain valid warm start information if all deleted rows are loose.

Implements OsiSolverInterface.

void OsiTestSolverInterface::initFromRlbRub	(	const int	rownum,
		const double *	rowlb,
		const double *	rowub
	)

protected

void OsiTestSolverInterface::initFromRhsSenseRange	(	const int	rownum,
		const char *	rowsen,
		const double *	rowrhs,
		const double *	rowrng
	)

protected

void OsiTestSolverInterface::initFromClbCubObj	(	const int	colnum,
		const double *	collb,
		const double *	colub,
		const double *	obj
	)

protected

virtual void OsiTestSolverInterface::loadProblem	(	const CoinPackedMatrix &	matrix,
		const double *	collb,
		const double *	colub,
		const double *	obj,
		const double *	rowlb,
		const double *	rowub
	)

virtual

Load in an problem by copying the arguments (the constraints on the rows are given by lower and upper bounds).

If a pointer is 0 then the following values are the default:

colub: all columns have upper bound infinity
collb: all columns have lower bound 0
rowub: all rows have upper bound infinity
rowlb: all rows have lower bound -infinity
obj: all variables have 0 objective coefficient

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::assignProblem	(	CoinPackedMatrix *&	matrix,
		double *&	collb,
		double *&	colub,
		double *&	obj,
		double *&	rowlb,
		double *&	rowub
	)

virtual

Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by lower and upper bounds).

For default values see the previous method.
WARNING: The arguments passed to this method will be freed using the C++ delete and delete[] functions.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::loadProblem	(	const CoinPackedMatrix &	matrix,
		const double *	collb,
		const double *	colub,
		const double *	obj,
		const char *	rowsen,
		const double *	rowrhs,
		const double *	rowrng
	)

virtual

Load in an problem by copying the arguments (the constraints on the rows are given by sense/rhs/range triplets).

If a pointer is 0 then the following values are the default:

colub: all columns have upper bound infinity
collb: all columns have lower bound 0
obj: all variables have 0 objective coefficient
rowsen: all rows are >=
rowrhs: all right hand sides are 0
rowrng: 0 for the ranged rows

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::assignProblem	(	CoinPackedMatrix *&	matrix,
		double *&	collb,
		double *&	colub,
		double *&	obj,
		char *&	rowsen,
		double *&	rowrhs,
		double *&	rowrng
	)

virtual

Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by sense/rhs/range triplets).

For default values see the previous method.
WARNING: The arguments passed to this method will be freed using the C++ delete and delete[] functions.

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::loadProblem	(	const int	numcols,
		const int	numrows,
		const int *	start,
		const int *	index,
		const double *	value,
		const double *	collb,
		const double *	colub,
		const double *	obj,
		const double *	rowlb,
		const double *	rowub
	)

virtual

Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps).

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::loadProblem	(	const int	numcols,
		const int	numrows,
		const int *	start,
		const int *	index,
		const double *	value,
		const double *	collb,
		const double *	colub,
		const double *	obj,
		const char *	rowsen,
		const double *	rowrhs,
		const double *	rowrng
	)

virtual

Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps).

Implements OsiSolverInterface.

virtual int OsiTestSolverInterface::readMps	(	const char *	filename,
		const char *	extension = `"mps"`
	)

virtual

Read an mps file from the given filename.

Reimplemented from OsiSolverInterface.

virtual void OsiTestSolverInterface::writeMps	(	const char *	filename,
		const char *	extension = `"mps"`,
		double	objSense = `0.0`
	)		const

virtual

Write the problem into an mps file of the given filename.

If objSense is non zero then -1.0 forces the code to write a maximization objective and +1.0 to write a minimization one. If 0.0 then solver can do what it wants

Implements OsiSolverInterface.

VOL_problem* OsiTestSolverInterface::volprob ( )

inline

Get pointer to Vol model.

Definition at line 681 of file OsiTestSolverInterface.hpp.

virtual OsiSolverInterface* OsiTestSolverInterface::clone ( bool copyData = true ) const

virtual

Clone.

Implements OsiSolverInterface.

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

Assignment operator.

virtual void OsiTestSolverInterface::applyRowCut ( const OsiRowCut & rc )

protectedvirtual

Apply a row cut (append to constraint matrix).

Implements OsiSolverInterface.

virtual void OsiTestSolverInterface::applyColCut ( const OsiColCut & cc )

protectedvirtual

Apply a column cut (adjust one or more bounds).

Implements OsiSolverInterface.

virtual int OsiTestSolverInterface::compute_rc	(	const VOL_dvector &	u,
		VOL_dvector &	rc
	)

privatevirtual

compute reduced costs

Implements VOL_user_hooks.

virtual int OsiTestSolverInterface::solve_subproblem	(	const VOL_dvector &	dual,
		const VOL_dvector &	rc,
		double &	lcost,
		VOL_dvector &	x,
		VOL_dvector &	v,
		double &	pcost
	)

privatevirtual

Solve the subproblem for the subgradient step.

Implements VOL_user_hooks.

virtual int OsiTestSolverInterface::heuristics	(	const VOL_problem &	,
		const VOL_dvector &	,
		double &	heur_val
	)

inlineprivatevirtual

Starting from the primal vector x, run a heuristic to produce an integer solution.

This is not done in LP solving.

Implements VOL_user_hooks.

Definition at line 730 of file OsiTestSolverInterface.hpp.

void OsiTestSolverInterface::updateRowMatrix_ ( ) const

private

Update the row ordered matrix from the column ordered one.

void OsiTestSolverInterface::updateColMatrix_ ( ) const

private

Update the column ordered matrix from the row ordered one.

void OsiTestSolverInterface::checkData_ ( ) const

private

Test whether the Volume Algorithm can be applied to the given problem.

void OsiTestSolverInterface::compute_rc_	(	const double *	u,
		double *	rc
	)		const

private

Compute the reduced costs (rc) with respect to the dual values given in u.

void OsiTestSolverInterface::gutsOfDestructor_ ( )

private

A method deleting every member data.

void OsiTestSolverInterface::rowRimAllocator_ ( )

private

A method allocating sufficient space for the rim vectors corresponding to the rows.

void OsiTestSolverInterface::colRimAllocator_ ( )

private

A method allocating sufficient space for the rim vectors corresponding to the columns.

void OsiTestSolverInterface::rowRimResize_ ( const int newSize )

private

Reallocate the rim arrays corresponding to the rows.

void OsiTestSolverInterface::colRimResize_ ( const int newSize )

private

Reallocate the rim arrays corresponding to the columns.

void OsiTestSolverInterface::convertBoundsToSenses_ ( )

private

For each row convert LB/UB style row constraints to sense/rhs style.

void OsiTestSolverInterface::convertSensesToBounds_ ( )

private

For each row convert sense/rhs style row constraints to LB/UB style.

bool OsiTestSolverInterface::test_zero_one_minusone_ ( const CoinPackedMatrix & m ) const

private

test whether the given matrix is 0/1/-1 entries only.

Friends And Related Function Documentation

void OsiTestSolverInterfaceUnitTest	(	const std::string &	mpsDir,
		const std::string &	netlibDir
	)

friend

A function that tests the methods in the OsiTestSolverInterface class.

Member Data Documentation

bool OsiTestSolverInterface::rowMatrixCurrent_

mutableprivate

A flag indicating whether the row ordered matrix is up-to-date.

Definition at line 786 of file OsiTestSolverInterface.hpp.

CoinPackedMatrix OsiTestSolverInterface::rowMatrix_

mutableprivate

The problem matrix in a row ordered form.

Definition at line 788 of file OsiTestSolverInterface.hpp.

bool OsiTestSolverInterface::colMatrixCurrent_

mutableprivate

A flag indicating whether the column ordered matrix is up-to-date.

Definition at line 790 of file OsiTestSolverInterface.hpp.

CoinPackedMatrix OsiTestSolverInterface::colMatrix_

mutableprivate

The problem matrix in a column ordered form.

Definition at line 792 of file OsiTestSolverInterface.hpp.

bool OsiTestSolverInterface::isZeroOneMinusOne_

private

An indicator whether the matrix is 0/1/-1.

Definition at line 799 of file OsiTestSolverInterface.hpp.

OsiVolMatrixOneMinusOne_* OsiTestSolverInterface::rowMatrixOneMinusOne_

private

The row ordered matrix without the elements.

Definition at line 801 of file OsiTestSolverInterface.hpp.

OsiVolMatrixOneMinusOne_* OsiTestSolverInterface::colMatrixOneMinusOne_

private

The column ordered matrix without the elements.

Definition at line 803 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::colupper_

private

Pointer to dense vector of structural variable upper bounds.

Definition at line 810 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::collower_

private

Pointer to dense vector of structural variable lower bounds.

Definition at line 812 of file OsiTestSolverInterface.hpp.

bool* OsiTestSolverInterface::continuous_

private

Pointer to dense vector of bool to indicate if column is continuous.

Definition at line 814 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rowupper_

private

Pointer to dense vector of slack variable upper bounds.

Definition at line 816 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rowlower_

private

Pointer to dense vector of slack variable lower bounds.

Definition at line 818 of file OsiTestSolverInterface.hpp.

char* OsiTestSolverInterface::rowsense_

private

Pointer to dense vector of row sense indicators.

Definition at line 820 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rhs_

private

Pointer to dense vector of row right-hand side values.

Definition at line 822 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rowrange_

private

Pointer to dense vector of slack upper bounds for range constraints (undefined for non-range rows).

Definition at line 825 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::objcoeffs_

private

Pointer to dense vector of objective coefficients.

Definition at line 827 of file OsiTestSolverInterface.hpp.

double OsiTestSolverInterface::objsense_

private

Sense of objective (1 for min; -1 for max)

Definition at line 832 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::colsol_

private

Pointer to dense vector of primal structural variable values.

Definition at line 838 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rowprice_

private

Pointer to dense vector of dual row variable values.

Definition at line 840 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rc_

private

Pointer to dense vector of reduced costs.

Definition at line 842 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::lhs_

private

Pointer to dense vector of left hand sides (row activity levels)

Definition at line 844 of file OsiTestSolverInterface.hpp.

double OsiTestSolverInterface::lagrangeanCost_

private

The Lagrangean cost, a lower bound on the objective value.

Definition at line 846 of file OsiTestSolverInterface.hpp.

double* OsiTestSolverInterface::rowpriceHotStart_

private

An array to store the hotstart information between solveHotStart() calls.

Definition at line 852 of file OsiTestSolverInterface.hpp.

int OsiTestSolverInterface::maxNumrows_

private

allocated size of the row related rim vectors

Definition at line 855 of file OsiTestSolverInterface.hpp.

int OsiTestSolverInterface::maxNumcols_

private

allocated size of the column related rim vectors

Definition at line 857 of file OsiTestSolverInterface.hpp.

VOL_problem OsiTestSolverInterface::volprob_

private

The volume solver.

Definition at line 860 of file OsiTestSolverInterface.hpp.

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

/home/coin/svn-release/Blis-0.94.3/Osi/test/OsiTestSolverInterface.hpp

Classes

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation