This implements Gub rows plus a ClpPackedMatrix. More...

#include <ClpGubMatrix.hpp>

Inheritance diagram for ClpGubMatrix:

Collaboration diagram for ClpGubMatrix:

Public Member Functions
Main functions provided
virtual ClpMatrixBase *	reverseOrderedCopy () const
	Returns a new matrix in reverse order without gaps (GUB wants NULL) More...

virtual int	countBasis (const int *whichColumn, int &numberColumnBasic)
	Returns number of elements in column part of basis. More...

virtual void	fillBasis (ClpSimplex model, const int whichColumn, int &numberColumnBasic, int row, int start, int rowCount, int columnCount, CoinFactorizationDouble *element)
	Fills in column part of basis. More...

virtual void	unpack (const ClpSimplex model, CoinIndexedVector rowArray, int column) const
	Unpacks a column into an CoinIndexedvector. More...

virtual void	unpackPacked (ClpSimplex model, CoinIndexedVector rowArray, int column) const
	Unpacks a column into an CoinIndexedvector in packed foramt Note that model is NOT const. More...

virtual void	add (const ClpSimplex model, CoinIndexedVector rowArray, int column, double multiplier) const
	Adds multiple of a column into an CoinIndexedvector You can use quickAdd to add to vector. More...

virtual void	add (const ClpSimplex model, double array, int column, double multiplier) const
	Adds multiple of a column into an array. More...

virtual void	partialPricing (ClpSimplex *model, double start, double end, int &bestSequence, int &numberWanted)
	Partial pricing. More...

virtual int	hiddenRows () const
	Returns number of hidden rows e.g. gub. More...

Matrix times vector methods
virtual void	transposeTimes (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`. More...

virtual void	transposeTimesByRow (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`. More...

virtual void	subsetTransposeTimes (const ClpSimplex model, const CoinIndexedVector x, const CoinIndexedVector y, CoinIndexedVector z) const
	Return `x *A` in `z` but just for indices in y. More...

virtual int	extendUpdated (ClpSimplex model, CoinIndexedVector update, int mode)
	expands an updated column to allow for extra rows which the main solver does not know about and returns number added if mode 0. More...

virtual void	primalExpanded (ClpSimplex *model, int mode)
	mode=0 - Set up before "update" and "times" for primal solution using extended rows mode=1 - Cleanup primal solution after "times" using extended rows. More...

virtual void	dualExpanded (ClpSimplex model, CoinIndexedVector array, double *other, int mode)
	mode=0 - Set up before "updateTranspose" and "transposeTimes" for duals using extended updates array (and may use other if dual values pass) mode=1 - Update dual solution after "transposeTimes" using extended rows. More...

virtual int	generalExpanded (ClpSimplex *model, int mode, int &number)
	mode=0 - Create list of non-key basics in pivotVariable_ using number as numberBasic in and out mode=1 - Set all key variables as basic mode=2 - return number extra rows needed, number gives maximum number basic mode=3 - before replaceColumn mode=4 - return 1 if can do primal, 2 if dual, 3 if both mode=5 - save any status stuff (when in good state) mode=6 - restore status stuff mode=7 - flag given variable (normally sequenceIn) mode=8 - unflag all variables mode=9 - synchronize costs mode=10 - return 1 if there may be changing bounds on variable (column generation) mode=11 - make sure set is clean (used when a variable rejected - but not flagged) mode=12 - after factorize but before permute stuff mode=13 - at end of simplex to delete stuff More...

virtual int	updatePivot (ClpSimplex *model, double oldInValue, double oldOutValue)
	update information for a pivot (and effective rhs) More...

virtual void	useEffectiveRhs (ClpSimplex *model, bool cheapest=true)
	Sets up an effective RHS and does gub crash if needed. More...

virtual double *	rhsOffset (ClpSimplex *model, bool forceRefresh=false, bool check=false)
	Returns effective RHS offset if it is being used. More...

virtual int	synchronize (ClpSimplex *model, int mode)
	This is local to Gub to allow synchronization: mode=0 when status of basis is good mode=1 when variable is flagged mode=2 when all variables unflagged (returns number flagged) mode=3 just reset costs (primal) mode=4 correct number of dual infeasibilities mode=5 return 4 if time to re-factorize mode=6 - return 1 if there may be changing bounds on variable (column generation) mode=7 - do extra restores for column generation mode=8 - make sure set is clean mode=9 - adjust lower, upper on set by incoming. More...

virtual void	correctSequence (const ClpSimplex *model, int &sequenceIn, int &sequenceOut)
	Correct sequence in and out to give true value. More...

virtual void	transposeTimes (double scalar, const double x, double y) const
	Return `y + x * scalar * A` in `y`. More...

virtual void	transposeTimes (double scalar, const double x, double y, const double rowScale, const double columnScale, double *spare=NULL) const
	And for scaling. More...

virtual void	transposeTimes (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A in z.` More...

Constructors, destructor
	ClpGubMatrix ()
	Default constructor. More...

virtual	~ClpGubMatrix ()
	Destructor. More...

Copy method
	ClpGubMatrix (const ClpGubMatrix &)
	The copy constructor. More...

	ClpGubMatrix (const CoinPackedMatrix &)
	The copy constructor from an CoinPackedMatrix. More...

	ClpGubMatrix (const ClpGubMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)
	Subset constructor (without gaps). More...

	ClpGubMatrix (const CoinPackedMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)

	ClpGubMatrix (CoinPackedMatrix *matrix)
	This takes over ownership (for space reasons) More...

	ClpGubMatrix (ClpPackedMatrix matrix, int numberSets, const int start, const int end, const double lower, const double upper, const unsigned char status=NULL)
	This takes over ownership (for space reasons) and is the real constructor. More...

ClpGubMatrix &	operator= (const ClpGubMatrix &)

virtual ClpMatrixBase *	clone () const
	Clone. More...

virtual ClpMatrixBase *	subsetClone (int numberRows, const int whichRows, int numberColumns, const int whichColumns) const
	Subset clone (without gaps). More...

void	redoSet (ClpSimplex *model, int newKey, int oldKey, int iSet)
	redoes next_ for a set. More...

gets and sets
ClpSimplex::Status	getStatus (int sequence) const
	Status. More...

void	setStatus (int sequence, ClpSimplex::Status status)

void	setFlagged (int sequence)
	To flag a variable. More...

void	clearFlagged (int sequence)

bool	flagged (int sequence) const

void	setAbove (int sequence)
	To say key is above ub. More...

void	setFeasible (int sequence)
	To say key is feasible. More...

void	setBelow (int sequence)
	To say key is below lb. More...

double	weight (int sequence) const

int *	start () const
	Starts. More...

int *	end () const
	End. More...

double *	lower () const
	Lower bounds on sets. More...

double *	upper () const
	Upper bounds on sets. More...

int *	keyVariable () const
	Key variable of set. More...

int *	backward () const
	Backward pointer to set number. More...

int	numberSets () const
	Number of sets (gub rows) More...

void	switchOffCheck ()
	Switches off dj checking each factorization (for BIG models) More...

Public Member Functions inherited from ClpPackedMatrix
virtual CoinPackedMatrix *	getPackedMatrix () const
	Return a complete CoinPackedMatrix. More...

virtual bool	isColOrdered () const
	Whether the packed matrix is column major ordered or not. More...

virtual CoinBigIndex	getNumElements () const
	Number of entries in the packed matrix. More...

virtual int	getNumCols () const
	Number of columns. More...

virtual int	getNumRows () const
	Number of rows. More...

virtual const double *	getElements () const
	A vector containing the elements in the packed matrix. More...

double *	getMutableElements () const
	Mutable elements. More...

virtual const int *	getIndices () const
	A vector containing the minor indices of the elements in the packed matrix. More...

virtual const CoinBigIndex *	getVectorStarts () const

virtual const int *	getVectorLengths () const
	The lengths of the major-dimension vectors. More...

virtual int	getVectorLength (int index) const
	The length of a single major-dimension vector. More...

virtual void	deleteCols (const int numDel, const int *indDel)
	Delete the columns whose indices are listed in `indDel`. More...

virtual void	deleteRows (const int numDel, const int *indDel)
	Delete the rows whose indices are listed in `indDel`. More...

virtual void	appendCols (int number, const CoinPackedVectorBase const columns)
	Append Columns. More...

virtual void	appendRows (int number, const CoinPackedVectorBase const rows)
	Append Rows. More...

virtual int	appendMatrix (int number, int type, const CoinBigIndex starts, const int index, const double *element, int numberOther=-1)
	Append a set of rows/columns to the end of the matrix. More...

virtual void	replaceVector (const int index, const int numReplace, const double *newElements)
	Replace the elements of a vector. More...

virtual void	modifyCoefficient (int row, int column, double newElement, bool keepZero=false)
	Modify one element of packed matrix. More...

virtual int	scale (ClpModel model, ClpSimplex simplex=NULL) const
	Creates scales for column copy (rowCopy in model may be modified) returns non-zero if no scaling done. More...

virtual void	scaleRowCopy (ClpModel *model) const
	Scales rowCopy if column copy scaled Only called if scales already exist. More...

void	createScaledMatrix (ClpSimplex *model) const
	Creates scaled column copy if scales exist. More...

virtual ClpMatrixBase *	scaledColumnCopy (ClpModel *model) const
	Realy really scales column copy Only called if scales already exist. More...

virtual bool	allElementsInRange (ClpModel *model, double smallest, double largest, int check=15)
	Checks if all elements are in valid range. More...

virtual void	rangeOfElements (double &smallestNegative, double &largestNegative, double &smallestPositive, double &largestPositive)
	Returns largest and smallest elements of both signs. More...

virtual void	releasePackedMatrix () const
	Allow any parts of a created CoinPackedMatrix to be deleted. More...

virtual CoinBigIndex *	dubiousWeights (const ClpSimplex model, int inputWeights) const
	Given positive integer weights for each row fills in sum of weights for each column (and slack). More...

virtual bool	canDoPartialPricing () const
	Says whether it can do partial pricing. More...

virtual int	refresh (ClpSimplex *model)
	makes sure active columns correct More...

virtual void	reallyScale (const double rowScale, const double columnScale)

virtual void	setDimensions (int numrows, int numcols)
	Set the dimensions of the matrix. More...

virtual void	times (double scalar, const double x, double y) const
	Return `y + A * scalar *x` in `y`. More...

virtual void	times (double scalar, const double x, double y, const double rowScale, const double columnScale) const
	And for scaling. More...

virtual void	transposeTimes (double scalar, const double x, double y) const
	Return `y + x * scalar * A` in `y`. More...

virtual void	transposeTimes (double scalar, const double x, double y, const double rowScale, const double columnScale, double *spare=NULL) const
	And for scaling. More...

void	transposeTimesSubset (int number, const int which, const double pi, double y, const double rowScale, const double columnScale, double spare=NULL) const
	Return `y - pi * A` in `y`. More...

void	transposeTimesByColumn (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A in z.` More...

virtual bool	canCombine (const ClpSimplex model, const CoinIndexedVector pi) const
	Returns true if can combine transposeTimes and subsetTransposeTimes and if it would be faster. More...

virtual int	transposeTimes2 (const ClpSimplex model, const CoinIndexedVector pi1, CoinIndexedVector dj1, const CoinIndexedVector pi2, CoinIndexedVector spare, double infeas, double reducedCost, double referenceIn, double devex, unsigned int reference, double *weights, double scaleFactor)
	Updates two arrays for steepest and does devex weights Returns nonzero if updates reduced cost and infeas - new infeas in dj1. More...

virtual void	subsetTimes2 (const ClpSimplex model, CoinIndexedVector dj1, const CoinIndexedVector pi2, CoinIndexedVector dj2, double referenceIn, double devex, unsigned int reference, double weights, double scaleFactor)
	Updates second array for steepest and does devex weights. More...

void	useEffectiveRhs (ClpSimplex *model)
	Sets up an effective RHS. More...

CoinPackedMatrix *	matrix () const
	Returns CoinPackedMatrix (non const) More...

void	setMatrixNull ()
	Just sets matrix_ to NULL so it can be used elsewhere. More...

void	makeSpecialColumnCopy ()
	Say we want special column copy. More...

void	releaseSpecialColumnCopy ()
	Say we don't want special column copy. More...

bool	zeros () const
	Are there zeros? More...

bool	wantsSpecialColumnCopy () const
	Do we want special column copy. More...

int	flags () const
	Flags. More...

void	checkGaps ()
	Sets flags_ correctly. More...

int	numberActiveColumns () const
	number of active columns (normally same as number of columns) More...

void	setNumberActiveColumns (int value)
	Set number of active columns (normally same as number of columns) More...

	ClpPackedMatrix ()
	Default constructor. More...

virtual	~ClpPackedMatrix ()
	Destructor. More...

	ClpPackedMatrix (const ClpPackedMatrix &)
	The copy constructor. More...

	ClpPackedMatrix (const CoinPackedMatrix &)
	The copy constructor from an CoinPackedMatrix. More...

	ClpPackedMatrix (const ClpPackedMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)
	Subset constructor (without gaps). More...

	ClpPackedMatrix (const CoinPackedMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)

	ClpPackedMatrix (CoinPackedMatrix *matrix)
	This takes over ownership (for space reasons) More...

ClpPackedMatrix &	operator= (const ClpPackedMatrix &)

virtual void	copy (const ClpPackedMatrix *from)
	Copy contents - resizing if necessary - otherwise re-use memory. More...

void	specialRowCopy (ClpSimplex model, const ClpMatrixBase rowCopy)
	make special row copy More...

void	specialColumnCopy (ClpSimplex *model)
	make special column copy More...

Public Member Functions inherited from ClpMatrixBase
virtual bool	canGetRowCopy () const
	Returns true if can create row copy. More...

virtual void	createVariable (ClpSimplex *model, int &bestSequence)
	Creates a variable. More...

virtual int	checkFeasible (ClpSimplex *model, double &sum) const
	Just for debug if odd type matrix. More...

double	reducedCost (ClpSimplex *model, int sequence) const
	Returns reduced cost of a variable. More...

virtual void	times (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y) const =0
	Return `y + A * x * scalar` in `y`. More...

virtual void	times (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y, const double COIN_RESTRICT rowScale, const double COIN_RESTRICT columnScale) const
	And for scaling - default aborts for when scaling not supported (unless pointers NULL when as normal) More...

virtual void	transposeTimes (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y) const =0
	Return `y + x * scalar * A` in `y`. More...

virtual void	transposeTimes (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y, const double COIN_RESTRICT rowScale, const double COIN_RESTRICT columnScale, double *COIN_RESTRICT spare=NULL) const
	And for scaling - default aborts for when scaling not supported (unless pointers NULL when as normal) More...

virtual void	listTransposeTimes (const ClpSimplex model, double x, int y, int number, double z) const
	Return `x *A` in `z` but just for number indices in y. More...

virtual void	backToBasics ()
	Gets rid of any mutable by products. More...

int	type () const
	Returns type. More...

void	setType (int newtype)
	Sets type. More...

void	useEffectiveRhs (ClpSimplex *model)
	Sets up an effective RHS. More...

int	lastRefresh () const
	If rhsOffset used this is iteration last refreshed. More...

int	refreshFrequency () const
	If rhsOffset used this is refresh frequency (0==off) More...

void	setRefreshFrequency (int value)

bool	skipDualCheck () const
	whether to skip dual checks most of time More...

void	setSkipDualCheck (bool yes)

int	minimumObjectsScan () const
	Partial pricing tuning parameter - minimum number of "objects" to scan. More...

void	setMinimumObjectsScan (int value)

int	minimumGoodReducedCosts () const
	Partial pricing tuning parameter - minimum number of negative reduced costs to get. More...

void	setMinimumGoodReducedCosts (int value)

double	startFraction () const
	Current start of search space in matrix (as fraction) More...

void	setStartFraction (double value)

double	endFraction () const
	Current end of search space in matrix (as fraction) More...

void	setEndFraction (double value)

double	savedBestDj () const
	Current best reduced cost. More...

void	setSavedBestDj (double value)

int	originalWanted () const
	Initial number of negative reduced costs wanted. More...

void	setOriginalWanted (int value)

int	currentWanted () const
	Current number of negative reduced costs which we still need. More...

void	setCurrentWanted (int value)

int	savedBestSequence () const
	Current best sequence. More...

void	setSavedBestSequence (int value)

virtual	~ClpMatrixBase ()
	Destructor (has to be public) More...

Protected Attributes
Data members
The data members are protected to allow access for derived classes.
double	sumDualInfeasibilities_
	Sum of dual infeasibilities. More...

double	sumPrimalInfeasibilities_
	Sum of primal infeasibilities. More...

double	sumOfRelaxedDualInfeasibilities_
	Sum of Dual infeasibilities using tolerance based on error in duals. More...

double	sumOfRelaxedPrimalInfeasibilities_
	Sum of Primal infeasibilities using tolerance based on error in primals. More...

double	infeasibilityWeight_
	Infeasibility weight when last full pass done. More...

int *	start_
	Starts. More...

int *	end_
	End. More...

double *	lower_
	Lower bounds on sets. More...

double *	upper_
	Upper bounds on sets. More...

unsigned char *	status_
	Status of slacks. More...

unsigned char *	saveStatus_
	Saved status of slacks. More...

int *	savedKeyVariable_
	Saved key variables. More...

int *	backward_
	Backward pointer to set number. More...

int *	backToPivotRow_
	Backward pointer to pivot row !!! More...

double *	changeCost_
	Change in costs for keys. More...

int *	keyVariable_
	Key variable of set. More...

int *	next_
	Next basic variable in set - starts at key and end with -(set+1). More...

int *	toIndex_
	Backward pointer to index in CoinIndexedVector. More...

int *	fromIndex_

ClpSimplex *	model_
	Pointer back to model. More...

int	numberDualInfeasibilities_
	Number of dual infeasibilities. More...

int	numberPrimalInfeasibilities_
	Number of primal infeasibilities. More...

int	noCheck_
	If pricing will declare victory (i.e. More...

int	numberSets_
	Number of sets (gub rows) More...

int	saveNumber_
	Number in vector without gub extension. More...

int	possiblePivotKey_
	Pivot row of possible next key. More...

int	gubSlackIn_
	Gub slack in (set number or -1) More...

int	firstGub_
	First gub variables (same as start_[0] at present) More...

int	lastGub_
	last gub variable (same as end_[numberSets_-1] at present) More...

int	gubType_
	type of gub - 0 not contiguous, 1 contiguous add 8 bit to say no ubs on individual variables More...

Protected Attributes inherited from ClpPackedMatrix
CoinPackedMatrix *	matrix_
	Data. More...

int	numberActiveColumns_
	number of active columns (normally same as number of columns) More...

int	flags_
	Flags - 1 - has zero elements 2 - has gaps 4 - has special row copy 8 - has special column copy 16 - wants special column copy. More...

ClpPackedMatrix2 *	rowCopy_
	Special row copy. More...

ClpPackedMatrix3 *	columnCopy_
	Special column copy. More...

Protected Attributes inherited from ClpMatrixBase
double *	rhsOffset_
	Effective RHS offset if it is being used. More...

double	startFraction_
	Current start of search space in matrix (as fraction) More...

double	endFraction_
	Current end of search space in matrix (as fraction) More...

double	savedBestDj_
	Best reduced cost so far. More...

int	originalWanted_
	Initial number of negative reduced costs wanted. More...

int	currentWanted_
	Current number of negative reduced costs which we still need. More...

int	savedBestSequence_
	Saved best sequence in pricing. More...

int	type_
	type (may be useful) More...

int	lastRefresh_
	If rhsOffset used this is iteration last refreshed. More...

int	refreshFrequency_
	If rhsOffset used this is refresh frequency (0==off) More...

int	minimumObjectsScan_
	Partial pricing tuning parameter - minimum number of "objects" to scan. More...

int	minimumGoodReducedCosts_
	Partial pricing tuning parameter - minimum number of negative reduced costs to get. More...

int	trueSequenceIn_
	True sequence in (i.e. from larger problem) More...

int	trueSequenceOut_
	True sequence out (i.e. from larger problem) More...

bool	skipDualCheck_
	whether to skip dual checks most of time More...

Additional Inherited Members
Protected Member Functions inherited from ClpPackedMatrix
void	checkFlags (int type) const
	Check validity. More...

Protected Member Functions inherited from ClpMatrixBase
	ClpMatrixBase ()
	Default constructor. More...

	ClpMatrixBase (const ClpMatrixBase &)

ClpMatrixBase &	operator= (const ClpMatrixBase &)

Detailed Description

This implements Gub rows plus a ClpPackedMatrix.

There will be a version using ClpPlusMinusOne matrix but there is no point doing one with ClpNetworkMatrix (although an embedded network is attractive).

Definition at line 21 of file ClpGubMatrix.hpp.

Constructor & Destructor Documentation

◆ ClpGubMatrix() [1/7]

ClpGubMatrix::ClpGubMatrix ( )

Default constructor.

◆ ~ClpGubMatrix()

virtual ClpGubMatrix::~ClpGubMatrix ( )

virtual

Destructor.

◆ ClpGubMatrix() [2/7]

ClpGubMatrix::ClpGubMatrix ( const ClpGubMatrix & )

The copy constructor.

◆ ClpGubMatrix() [3/7]

ClpGubMatrix::ClpGubMatrix ( const CoinPackedMatrix & )

The copy constructor from an CoinPackedMatrix.

◆ ClpGubMatrix() [4/7]

ClpGubMatrix::ClpGubMatrix	(	const ClpGubMatrix &	wholeModel,
		int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)

Subset constructor (without gaps).

Duplicates are allowed and order is as given

◆ ClpGubMatrix() [5/7]

ClpGubMatrix::ClpGubMatrix	(	const CoinPackedMatrix &	wholeModel,
		int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)

◆ ClpGubMatrix() [6/7]

ClpGubMatrix::ClpGubMatrix ( CoinPackedMatrix * matrix )

This takes over ownership (for space reasons)

◆ ClpGubMatrix() [7/7]

ClpGubMatrix::ClpGubMatrix	(	ClpPackedMatrix *	matrix,
		int	numberSets,
		const int *	start,
		const int *	end,
		const double *	lower,
		const double *	upper,
		const unsigned char *	status = `NULL`
	)

This takes over ownership (for space reasons) and is the real constructor.

Member Function Documentation

◆ reverseOrderedCopy()

virtual ClpMatrixBase* ClpGubMatrix::reverseOrderedCopy ( ) const

virtual

Returns a new matrix in reverse order without gaps (GUB wants NULL)

Reimplemented from ClpPackedMatrix.

◆ countBasis()

virtual int ClpGubMatrix::countBasis	(	const int *	whichColumn,
		int &	numberColumnBasic
	)

virtual

Returns number of elements in column part of basis.

Reimplemented from ClpPackedMatrix.

◆ fillBasis()

virtual void ClpGubMatrix::fillBasis	(	ClpSimplex *	model,
		const int *	whichColumn,
		int &	numberColumnBasic,
		int *	row,
		int *	start,
		int *	rowCount,
		int *	columnCount,
		CoinFactorizationDouble *	element
	)

virtual

Fills in column part of basis.

Reimplemented from ClpPackedMatrix.

◆ unpack()

virtual void ClpGubMatrix::unpack	(	const ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column
	)		const

virtual

Unpacks a column into an CoinIndexedvector.

Reimplemented from ClpPackedMatrix.

◆ unpackPacked()

virtual void ClpGubMatrix::unpackPacked	(	ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column
	)		const

virtual

Unpacks a column into an CoinIndexedvector in packed foramt Note that model is NOT const.

Bounds and objective could be modified if doing column generation (just for this variable)

Reimplemented from ClpPackedMatrix.

◆ add() [1/2]

virtual void ClpGubMatrix::add	(	const ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column,
		double	multiplier
	)		const

virtual

Adds multiple of a column into an CoinIndexedvector You can use quickAdd to add to vector.

Reimplemented from ClpPackedMatrix.

◆ add() [2/2]

virtual void ClpGubMatrix::add	(	const ClpSimplex *	model,
		double *	array,
		int	column,
		double	multiplier
	)		const

virtual

Adds multiple of a column into an array.

Reimplemented from ClpPackedMatrix.

◆ partialPricing()

virtual void ClpGubMatrix::partialPricing	(	ClpSimplex *	model,
		double	start,
		double	end,
		int &	bestSequence,
		int &	numberWanted
	)

virtual

Partial pricing.

Reimplemented from ClpPackedMatrix.

Reimplemented in ClpGubDynamicMatrix.

◆ hiddenRows()

virtual int ClpGubMatrix::hiddenRows ( ) const

virtual

Returns number of hidden rows e.g. gub.

Reimplemented from ClpMatrixBase.

◆ transposeTimes() [1/4]

virtual void ClpGubMatrix::transposeTimes	(	const ClpSimplex *	model,
		double	scalar,
		const CoinIndexedVector *	x,
		CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)		const

virtual

Return x * scalar * A + y in z.

Can use y as temporary array (will be empty at end) Note - If x packed mode - then z packed mode Squashes small elements and knows about ClpSimplex

Reimplemented from ClpPackedMatrix.

◆ transposeTimesByRow()

virtual void ClpGubMatrix::transposeTimesByRow	(	const ClpSimplex *	model,
		double	scalar,
		const CoinIndexedVector *	x,
		CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)		const

virtual

Return x * scalar * A + y in z.

Can use y as temporary array (will be empty at end) Note - If x packed mode - then z packed mode Squashes small elements and knows about ClpSimplex. This version uses row copy

Reimplemented from ClpPackedMatrix.

◆ subsetTransposeTimes()

virtual void ClpGubMatrix::subsetTransposeTimes	(	const ClpSimplex *	model,
		const CoinIndexedVector *	x,
		const CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)		const

virtual

Return x *A in z but just for indices in y.

Note - z always packed mode

Reimplemented from ClpPackedMatrix.

◆ extendUpdated()

virtual int ClpGubMatrix::extendUpdated	(	ClpSimplex *	model,
		CoinIndexedVector *	update,
		int	mode
	)

virtual

expands an updated column to allow for extra rows which the main solver does not know about and returns number added if mode 0.

If mode 1 deletes extra entries

This active in Gub

Reimplemented from ClpMatrixBase.

◆ primalExpanded()

virtual void ClpGubMatrix::primalExpanded	(	ClpSimplex *	model,
		int	mode
	)

virtual

mode=0 - Set up before "update" and "times" for primal solution using extended rows mode=1 - Cleanup primal solution after "times" using extended rows.

mode=2 - Check (or report on) primal infeasibilities

Reimplemented from ClpMatrixBase.

◆ dualExpanded()

virtual void ClpGubMatrix::dualExpanded	(	ClpSimplex *	model,
		CoinIndexedVector *	array,
		double *	other,
		int	mode
	)

virtual

mode=0 - Set up before "updateTranspose" and "transposeTimes" for duals using extended updates array (and may use other if dual values pass) mode=1 - Update dual solution after "transposeTimes" using extended rows.

mode=2 - Compute all djs and compute key dual infeasibilities mode=3 - Report on key dual infeasibilities mode=4 - Modify before updateTranspose in partial pricing

Reimplemented from ClpMatrixBase.

◆ generalExpanded()

virtual int ClpGubMatrix::generalExpanded	(	ClpSimplex *	model,
		int	mode,
		int &	number
	)

virtual

mode=0 - Create list of non-key basics in pivotVariable_ using number as numberBasic in and out mode=1 - Set all key variables as basic mode=2 - return number extra rows needed, number gives maximum number basic mode=3 - before replaceColumn mode=4 - return 1 if can do primal, 2 if dual, 3 if both mode=5 - save any status stuff (when in good state) mode=6 - restore status stuff mode=7 - flag given variable (normally sequenceIn) mode=8 - unflag all variables mode=9 - synchronize costs mode=10 - return 1 if there may be changing bounds on variable (column generation) mode=11 - make sure set is clean (used when a variable rejected - but not flagged) mode=12 - after factorize but before permute stuff mode=13 - at end of simplex to delete stuff

Reimplemented from ClpMatrixBase.

◆ updatePivot()

virtual int ClpGubMatrix::updatePivot	(	ClpSimplex *	model,
		double	oldInValue,
		double	oldOutValue
	)

virtual

update information for a pivot (and effective rhs)

Reimplemented from ClpMatrixBase.

Reimplemented in ClpGubDynamicMatrix.

◆ useEffectiveRhs()

virtual void ClpGubMatrix::useEffectiveRhs	(	ClpSimplex *	model,
		bool	cheapest = `true`
	)

virtual

Sets up an effective RHS and does gub crash if needed.

Reimplemented in ClpGubDynamicMatrix.

◆ rhsOffset()

virtual double* ClpGubMatrix::rhsOffset	(	ClpSimplex *	model,
		bool	forceRefresh = `false`,
		bool	check = `false`
	)

virtual

Returns effective RHS offset if it is being used.

This is used for long problems or big gub or anywhere where going through full columns is expensive. This may re-compute

Reimplemented from ClpMatrixBase.

Reimplemented in ClpGubDynamicMatrix.

◆ synchronize()

virtual int ClpGubMatrix::synchronize	(	ClpSimplex *	model,
		int	mode
	)

virtual

This is local to Gub to allow synchronization: mode=0 when status of basis is good mode=1 when variable is flagged mode=2 when all variables unflagged (returns number flagged) mode=3 just reset costs (primal) mode=4 correct number of dual infeasibilities mode=5 return 4 if time to re-factorize mode=6 - return 1 if there may be changing bounds on variable (column generation) mode=7 - do extra restores for column generation mode=8 - make sure set is clean mode=9 - adjust lower, upper on set by incoming.

Reimplemented in ClpGubDynamicMatrix.

◆ correctSequence()

virtual void ClpGubMatrix::correctSequence	(	const ClpSimplex *	model,
		int &	sequenceIn,
		int &	sequenceOut
	)

virtual

Correct sequence in and out to give true value.

Reimplemented from ClpPackedMatrix.

◆ operator=()

ClpGubMatrix& ClpGubMatrix::operator= ( const ClpGubMatrix & )

◆ clone()

virtual ClpMatrixBase* ClpGubMatrix::clone ( ) const

virtual

Clone.

Reimplemented from ClpPackedMatrix.

Reimplemented in ClpGubDynamicMatrix.

◆ subsetClone()

virtual ClpMatrixBase* ClpGubMatrix::subsetClone	(	int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)		const

virtual

Subset clone (without gaps).

Duplicates are allowed and order is as given

Reimplemented from ClpPackedMatrix.

◆ redoSet()

void ClpGubMatrix::redoSet	(	ClpSimplex *	model,
		int	newKey,
		int	oldKey,
		int	iSet
	)

redoes next_ for a set.

◆ getStatus()

ClpSimplex::Status ClpGubMatrix::getStatus ( int sequence ) const

inline

Status.

Definition at line 207 of file ClpGubMatrix.hpp.

◆ setStatus()

void ClpGubMatrix::setStatus	(	int	sequence,
		ClpSimplex::Status	status
	)

inline

Definition at line 211 of file ClpGubMatrix.hpp.

◆ setFlagged()

void ClpGubMatrix::setFlagged ( int sequence )

inline

To flag a variable.

Definition at line 218 of file ClpGubMatrix.hpp.

◆ clearFlagged()

void ClpGubMatrix::clearFlagged ( int sequence )

inline

Definition at line 222 of file ClpGubMatrix.hpp.

◆ flagged()

bool ClpGubMatrix::flagged ( int sequence ) const

inline

Definition at line 226 of file ClpGubMatrix.hpp.

◆ setAbove()

void ClpGubMatrix::setAbove ( int sequence )

inline

To say key is above ub.

Definition at line 231 of file ClpGubMatrix.hpp.

◆ setFeasible()

void ClpGubMatrix::setFeasible ( int sequence )

inline

To say key is feasible.

Definition at line 238 of file ClpGubMatrix.hpp.

◆ setBelow()

void ClpGubMatrix::setBelow ( int sequence )

inline

To say key is below lb.

Definition at line 245 of file ClpGubMatrix.hpp.

◆ weight()

double ClpGubMatrix::weight ( int sequence ) const

inline

Definition at line 251 of file ClpGubMatrix.hpp.

◆ start()

int* ClpGubMatrix::start ( ) const

inline

Starts.

Definition at line 258 of file ClpGubMatrix.hpp.

◆ end()

int* ClpGubMatrix::end ( ) const

inline

End.

Definition at line 263 of file ClpGubMatrix.hpp.

◆ lower()

double* ClpGubMatrix::lower ( ) const

inline

Lower bounds on sets.

Definition at line 268 of file ClpGubMatrix.hpp.

◆ upper()

double* ClpGubMatrix::upper ( ) const

inline

Upper bounds on sets.

Definition at line 273 of file ClpGubMatrix.hpp.

◆ keyVariable()

int* ClpGubMatrix::keyVariable ( ) const

inline

Key variable of set.

Definition at line 278 of file ClpGubMatrix.hpp.

◆ backward()

int* ClpGubMatrix::backward ( ) const

inline

Backward pointer to set number.

Definition at line 283 of file ClpGubMatrix.hpp.

◆ numberSets()

int ClpGubMatrix::numberSets ( ) const

inline

Number of sets (gub rows)

Definition at line 288 of file ClpGubMatrix.hpp.

◆ switchOffCheck()

void ClpGubMatrix::switchOffCheck ( )

Switches off dj checking each factorization (for BIG models)

◆ transposeTimes() [2/4]

virtual void ClpPackedMatrix::transposeTimes

Return y + x * scalar * A in y.

Precondition: x must be of size numRows(); y must be of size numColumns()

◆ transposeTimes() [3/4]

virtual void ClpPackedMatrix::transposeTimes

And for scaling.

◆ transposeTimes() [4/4]

virtual void ClpPackedMatrix::transposeTimes

Return x * scalar * A in z.

Can use y as temporary array (will be empty at end) Note - If x packed mode - then z packed mode Squashes small elements and knows about ClpSimplex

Member Data Documentation

◆ sumDualInfeasibilities_

double ClpGubMatrix::sumDualInfeasibilities_

protected

Sum of dual infeasibilities.

Definition at line 301 of file ClpGubMatrix.hpp.

◆ sumPrimalInfeasibilities_

double ClpGubMatrix::sumPrimalInfeasibilities_

protected

Sum of primal infeasibilities.

Definition at line 303 of file ClpGubMatrix.hpp.

◆ sumOfRelaxedDualInfeasibilities_

double ClpGubMatrix::sumOfRelaxedDualInfeasibilities_

protected

Sum of Dual infeasibilities using tolerance based on error in duals.

Definition at line 305 of file ClpGubMatrix.hpp.

◆ sumOfRelaxedPrimalInfeasibilities_

double ClpGubMatrix::sumOfRelaxedPrimalInfeasibilities_

protected

Sum of Primal infeasibilities using tolerance based on error in primals.

Definition at line 307 of file ClpGubMatrix.hpp.

◆ infeasibilityWeight_

double ClpGubMatrix::infeasibilityWeight_

protected

Infeasibility weight when last full pass done.

Definition at line 309 of file ClpGubMatrix.hpp.

◆ start_

int* ClpGubMatrix::start_

protected

Starts.

Definition at line 311 of file ClpGubMatrix.hpp.

◆ end_

int* ClpGubMatrix::end_

protected

End.

Definition at line 313 of file ClpGubMatrix.hpp.

◆ lower_

double* ClpGubMatrix::lower_

protected

Lower bounds on sets.

Definition at line 315 of file ClpGubMatrix.hpp.

◆ upper_

double* ClpGubMatrix::upper_

protected

Upper bounds on sets.

Definition at line 317 of file ClpGubMatrix.hpp.

◆ status_

unsigned char* ClpGubMatrix::status_

mutableprotected

Status of slacks.

Definition at line 319 of file ClpGubMatrix.hpp.

◆ saveStatus_

unsigned char* ClpGubMatrix::saveStatus_

protected

Saved status of slacks.

Definition at line 321 of file ClpGubMatrix.hpp.

◆ savedKeyVariable_

int* ClpGubMatrix::savedKeyVariable_

protected

Saved key variables.

Definition at line 323 of file ClpGubMatrix.hpp.

◆ backward_

int* ClpGubMatrix::backward_

protected

Backward pointer to set number.

Definition at line 325 of file ClpGubMatrix.hpp.

◆ backToPivotRow_

int* ClpGubMatrix::backToPivotRow_

protected

Backward pointer to pivot row !!!

Definition at line 327 of file ClpGubMatrix.hpp.

◆ changeCost_

double* ClpGubMatrix::changeCost_

protected

Change in costs for keys.

Definition at line 329 of file ClpGubMatrix.hpp.

◆ keyVariable_

int* ClpGubMatrix::keyVariable_

mutableprotected

Key variable of set.

Definition at line 331 of file ClpGubMatrix.hpp.

◆ next_

int* ClpGubMatrix::next_

mutableprotected

Next basic variable in set - starts at key and end with -(set+1).

Now changes to -(nonbasic+1). next_ has extra space for 2* longest set

Definition at line 335 of file ClpGubMatrix.hpp.

◆ toIndex_

int* ClpGubMatrix::toIndex_

protected

Backward pointer to index in CoinIndexedVector.

Definition at line 337 of file ClpGubMatrix.hpp.

◆ fromIndex_

int* ClpGubMatrix::fromIndex_

protected

Definition at line 339 of file ClpGubMatrix.hpp.

◆ model_

ClpSimplex* ClpGubMatrix::model_

protected

Pointer back to model.

Definition at line 341 of file ClpGubMatrix.hpp.

◆ numberDualInfeasibilities_

int ClpGubMatrix::numberDualInfeasibilities_

protected

Number of dual infeasibilities.

Definition at line 343 of file ClpGubMatrix.hpp.

◆ numberPrimalInfeasibilities_

int ClpGubMatrix::numberPrimalInfeasibilities_

protected

Number of primal infeasibilities.

Definition at line 345 of file ClpGubMatrix.hpp.

◆ noCheck_

int ClpGubMatrix::noCheck_

protected

If pricing will declare victory (i.e.

no check every factorization). -1 - always check 0 - don't check 1 - in don't check mode but looks optimal

Definition at line 351 of file ClpGubMatrix.hpp.

◆ numberSets_

int ClpGubMatrix::numberSets_

protected

Number of sets (gub rows)

Definition at line 353 of file ClpGubMatrix.hpp.

◆ saveNumber_

int ClpGubMatrix::saveNumber_

protected

Number in vector without gub extension.

Definition at line 355 of file ClpGubMatrix.hpp.

◆ possiblePivotKey_

int ClpGubMatrix::possiblePivotKey_

protected

Pivot row of possible next key.

Definition at line 357 of file ClpGubMatrix.hpp.

◆ gubSlackIn_

int ClpGubMatrix::gubSlackIn_

protected

Gub slack in (set number or -1)

Definition at line 359 of file ClpGubMatrix.hpp.

◆ firstGub_

int ClpGubMatrix::firstGub_

protected

First gub variables (same as start_[0] at present)

Definition at line 361 of file ClpGubMatrix.hpp.

◆ lastGub_

int ClpGubMatrix::lastGub_

protected

last gub variable (same as end_[numberSets_-1] at present)

Definition at line 363 of file ClpGubMatrix.hpp.

◆ gubType_

int ClpGubMatrix::gubType_

protected

type of gub - 0 not contiguous, 1 contiguous add 8 bit to say no ubs on individual variables

Definition at line 366 of file ClpGubMatrix.hpp.

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

/home/ted/tmp/tmp/Clp/Clp/src/ClpGubMatrix.hpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ClpGubMatrix() [1/7]

◆ ~ClpGubMatrix()

◆ ClpGubMatrix() [2/7]

◆ ClpGubMatrix() [3/7]

◆ ClpGubMatrix() [4/7]

◆ ClpGubMatrix() [5/7]

◆ ClpGubMatrix() [6/7]

◆ ClpGubMatrix() [7/7]

Member Function Documentation

◆ reverseOrderedCopy()

◆ countBasis()

◆ fillBasis()

◆ unpack()

◆ unpackPacked()

◆ add() [1/2]

◆ add() [2/2]

◆ partialPricing()

◆ hiddenRows()

◆ transposeTimes() [1/4]

◆ transposeTimesByRow()

◆ subsetTransposeTimes()

◆ extendUpdated()

◆ primalExpanded()

◆ dualExpanded()

◆ generalExpanded()

◆ updatePivot()

◆ useEffectiveRhs()

◆ rhsOffset()

◆ synchronize()

◆ correctSequence()

◆ operator=()

◆ clone()

◆ subsetClone()

◆ redoSet()

◆ getStatus()

◆ setStatus()

◆ setFlagged()

◆ clearFlagged()

◆ flagged()

◆ setAbove()

◆ setFeasible()

◆ setBelow()

◆ weight()

◆ start()

◆ end()

◆ lower()

◆ upper()

◆ keyVariable()

◆ backward()

◆ numberSets()

◆ switchOffCheck()

◆ transposeTimes() [2/4]

◆ transposeTimes() [3/4]

◆ transposeTimes() [4/4]

Member Data Documentation

◆ sumDualInfeasibilities_

◆ sumPrimalInfeasibilities_

◆ sumOfRelaxedDualInfeasibilities_

◆ sumOfRelaxedPrimalInfeasibilities_

◆ infeasibilityWeight_

◆ start_

◆ end_

◆ lower_

◆ upper_

◆ status_

◆ saveStatus_

◆ savedKeyVariable_

◆ backward_

◆ backToPivotRow_

◆ changeCost_

◆ keyVariable_

◆ next_

◆ toIndex_

◆ fromIndex_

◆ model_