sepastore.c File Reference

Detailed Description

methods for storing separated cuts

Author

Tobias Achterberg

Marc Pfetsch

Definition in file sepastore.c.

#include <assert.h>
#include "scip/def.h"
#include "scip/set.h"
#include "scip/stat.h"
#include "scip/lp.h"
#include "scip/var.h"
#include "scip/tree.h"
#include "scip/sepastore.h"
#include "scip/event.h"
#include "scip/sepa.h"
#include "scip/cons.h"
#include "scip/debug.h"
#include "scip/struct_sepastore.h"

Go to the source code of this file.

Functions
static SCIP_RETCODE	sepastoreEnsureCutsMem (SCIP_SEPASTORE *sepastore, SCIP_SET *set, int num)
SCIP_RETCODE	SCIPsepastoreCreate (SCIP_SEPASTORE **sepastore)
SCIP_RETCODE	SCIPsepastoreFree (SCIP_SEPASTORE **sepastore)
void	SCIPsepastoreStartInitialLP (SCIP_SEPASTORE *sepastore)
void	SCIPsepastoreEndInitialLP (SCIP_SEPASTORE *sepastore)
void	SCIPsepastoreStartForceCuts (SCIP_SEPASTORE *sepastore)
void	SCIPsepastoreEndForceCuts (SCIP_SEPASTORE *sepastore)
static SCIP_Bool	sepastoreIsCutRedundant (SCIP_SEPASTORE *sepastore, SCIP_SET *set, SCIP_STAT *stat, SCIP_ROW *cut)
static SCIP_Bool	sepastoreIsCutRedundantOrInfeasible (SCIP_SEPASTORE *sepastore, SCIP_SET *set, SCIP_STAT *stat, SCIP_ROW *cut, SCIP_Bool *infeasible)
static SCIP_Bool	sepastoreIsBdchgApplicable (SCIP_SET *set, SCIP_ROW *cut)
static SCIP_RETCODE	sepastoreAddCut (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_SOL *sol, SCIP_ROW *cut, SCIP_Bool forcecut, SCIP_Bool root, SCIP_Bool *infeasible)
static SCIP_RETCODE	sepastoreDelCut (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, int pos)
SCIP_RETCODE	SCIPsepastoreAddCut (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_SOL *sol, SCIP_ROW *cut, SCIP_Bool forcecut, SCIP_Bool root, SCIP_Bool *infeasible)
static SCIP_RETCODE	sepastoreApplyLb (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real bound, SCIP_Bool local, SCIP_Bool *applied, SCIP_Bool *cutoff)
static SCIP_RETCODE	sepastoreApplyUb (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real bound, SCIP_Bool local, SCIP_Bool *applied, SCIP_Bool *cutoff)
static SCIP_RETCODE	sepastoreApplyBdchg (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_ROW *cut, SCIP_EFFICIACYCHOICE efficiacychoice, SCIP_Bool *applied, SCIP_Bool *cutoff)
static SCIP_RETCODE	sepastoreUpdateOrthogonalities (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_ROW *cut, SCIP_Real mincutorthogonality)
static SCIP_RETCODE	sepastoreApplyCut (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_ROW *cut, SCIP_Real mincutorthogonality, int depth, SCIP_EFFICIACYCHOICE efficiacychoice, int *ncutsapplied)
static int	sepastoreGetBestCut (SCIP_SEPASTORE *sepastore)
static SCIP_RETCODE	computeScore (SCIP_SEPASTORE *sepastore, SCIP_SET *set, SCIP_STAT *stat, SCIP_LP *lp, SCIP_Bool handlepool, int pos, SCIP_EFFICIACYCHOICE efficiacychoice)
SCIP_RETCODE	SCIPsepastoreApplyCuts (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_Bool root, SCIP_EFFICIACYCHOICE efficiacychoice, SCIP_Bool *cutoff)
SCIP_RETCODE	SCIPsepastoreClearCuts (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp)
SCIP_RETCODE	SCIPsepastoreRemoveInefficaciousCuts (SCIP_SEPASTORE *sepastore, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_Bool root, SCIP_EFFICIACYCHOICE efficiacychoice)
SCIP_Bool	SCIPsepastoreIsCutApplicable (SCIP_SET *set, SCIP_ROW *cut)
SCIP_ROW **	SCIPsepastoreGetCuts (SCIP_SEPASTORE *sepastore)
int	SCIPsepastoreGetNCuts (SCIP_SEPASTORE *sepastore)
int	SCIPsepastoreGetNCutsFound (SCIP_SEPASTORE *sepastore)
int	SCIPsepastoreGetNCutsFoundRound (SCIP_SEPASTORE *sepastore)
int	SCIPsepastoreGetNCutsApplied (SCIP_SEPASTORE *sepastore)

Function Documentation

static SCIP_RETCODE sepastoreEnsureCutsMem ( SCIP_SEPASTORE *  sepastore, SCIP_SET *  set, int  num  )

static

resizes cuts and score arrays to be able to store at least num entries

Parameters

sepastore	separation storage
set	global SCIP settings
num	minimal number of slots in array

Definition at line 48 of file sepastore.c.

References BMSreallocMemoryArray, SCIP_SepaStore::cuts, SCIP_SepaStore::cutssize, SCIP_SepaStore::efficacies, NULL, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcMemGrowSize(), and SCIP_SepaStore::scores.

Referenced by sepastoreAddCut().

SCIP_RETCODE SCIPsepastoreCreate

(

SCIP_SEPASTORE **

sepastore

)

creates separation storage

Parameters

sepastore

pointer to store separation storage

Definition at line 78 of file sepastore.c.

References BMSallocMemory, FALSE, NULL, SCIP_ALLOC, and SCIP_OKAY.

Referenced by initSolve().

SCIP_RETCODE SCIPsepastoreFree

(

SCIP_SEPASTORE **

sepastore

)

frees separation storage

Parameters

sepastore

pointer to store separation storage

Definition at line 104 of file sepastore.c.

References BMSfreeMemory, BMSfreeMemoryArrayNull, NULL, and SCIP_OKAY.

Referenced by freeSolve().

void SCIPsepastoreStartInitialLP

(

SCIP_SEPASTORE *

sepastore

)

informs separation storage, that the setup of the initial LP starts now

Parameters

sepastore

separation storage

Definition at line 123 of file sepastore.c.

References SCIP_SepaStore::initiallp, SCIP_SepaStore::ncuts, NULL, and TRUE.

Referenced by SCIPinitConssLP().

void SCIPsepastoreEndInitialLP

(

SCIP_SEPASTORE *

sepastore

)

informs separation storage, that the setup of the initial LP is now finished

Parameters

sepastore

separation storage

Definition at line 135 of file sepastore.c.

References FALSE, SCIP_SepaStore::initiallp, SCIP_SepaStore::ncuts, and NULL.

Referenced by SCIPinitConssLP().

void SCIPsepastoreStartForceCuts

(

SCIP_SEPASTORE *

sepastore

)

informs separation storage, that the following cuts should be used in any case

Parameters

sepastore

separation storage

Definition at line 147 of file sepastore.c.

References SCIP_SepaStore::forcecuts, NULL, and TRUE.

Referenced by enforceConstraints().

void SCIPsepastoreEndForceCuts

(

SCIP_SEPASTORE *

sepastore

)

informs separation storage, that the following cuts should no longer be used in any case

Parameters

sepastore

separation storage

Definition at line 158 of file sepastore.c.

References FALSE, SCIP_SepaStore::forcecuts, and NULL.

Referenced by enforceConstraints().

static SCIP_Bool sepastoreIsCutRedundant ( SCIP_SEPASTORE *  sepastore, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_ROW *  cut  )

static

checks cut for redundancy due to activity bounds

Parameters

sepastore	separation storage
set	global SCIP settings
stat	problem statistics data
cut	separated cut

Definition at line 170 of file sepastore.c.

References FALSE, NULL, SCIP_Real, SCIPdebugMessage, SCIProwGetLhs(), SCIProwGetMaxActivity(), SCIProwGetMinActivity(), SCIProwGetName(), SCIProwGetRhs(), SCIProwIsModifiable(), SCIPsetIsLE(), and TRUE.

Referenced by sepastoreAddCut().

static SCIP_Bool sepastoreIsCutRedundantOrInfeasible ( SCIP_SEPASTORE *  sepastore, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_ROW *  cut, SCIP_Bool *  infeasible  )

static

checks cut for redundancy or infeasibility due to activity bounds

Parameters

sepastore	separation storage
set	global SCIP settings
stat	problem statistics data
cut	separated cut
infeasible	pointer to store whether the cut has been detected to be infeasible

Definition at line 207 of file sepastore.c.

References FALSE, NULL, SCIP_Real, SCIPdebugMessage, SCIProwGetLhs(), SCIProwGetMaxActivity(), SCIProwGetMinActivity(), SCIProwGetName(), SCIProwGetRhs(), SCIProwIsModifiable(), SCIPsetIsFeasGT(), SCIPsetIsFeasLT(), SCIPsetIsLE(), and TRUE.

Referenced by sepastoreAddCut().

static SCIP_Bool sepastoreIsBdchgApplicable ( SCIP_SET *  set, SCIP_ROW *  cut  )

static

checks whether a cut with only one variable can be applied as boundchange

This is the case if the bound change would prove infeasibility (w.r.t feastol), or if the new bound is at least epsilon better than the old bound. In the latter case, also the opposite bound has to be taken into account.

Parameters

set	global SCIP settings
cut	cut with a single variable

Definition at line 261 of file sepastore.c.

References FALSE, MAX, MIN, NULL, SCIP_Bool, SCIP_Real, SCIPcolGetVar(), SCIProwGetCols(), SCIProwGetConstant(), SCIProwGetLhs(), SCIProwGetNNonz(), SCIProwGetRhs(), SCIProwGetVals(), SCIProwIsLocal(), SCIProwIsModifiable(), SCIPsetIsFeasGT(), SCIPsetIsFeasLT(), SCIPsetIsFeasZero(), SCIPsetIsGT(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPsetIsZero(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), and TRUE.

Referenced by SCIPsepastoreApplyCuts(), SCIPsepastoreIsCutApplicable(), and sepastoreAddCut().

static SCIP_RETCODE sepastoreAddCut ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_EVENTQUEUE *  eventqueue, SCIP_EVENTFILTER *  eventfilter, SCIP_LP *  lp, SCIP_SOL *  sol, SCIP_ROW *  cut, SCIP_Bool  forcecut, SCIP_Bool  root, SCIP_Bool *  infeasible  )

static

adds cut stored as LP row to separation storage and captures it; if the cut should be forced to be used, an infinite score has to be used

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data
sol	primal solution that was separated, or NULL for LP solution
cut	separated cut
forcecut	should the cut be forced to enter the LP?
root	are we at the root node?
infeasible	pointer to store whether the cut is infeasible

Definition at line 358 of file sepastore.c.

References SCIP_SepaStore::cuts, SCIP_SepaStore::cutssize, SCIP_SepaStore::efficacies, SCIP_EventFilter::eventmask, FALSE, SCIP_SepaStore::forcecuts, SCIP_SepaStore::initiallp, SCIP_EventFilter::len, SCIP_SepaStore::ncuts, SCIP_SepaStore::nforcedcuts, NULL, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_Bool, SCIP_CALL, SCIP_EVENTTYPE_ROWADDEDSEPA, SCIP_EVENTTYPE_ROWDELETEDSEPA, SCIP_INVALID, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPeventCreateRowAddedSepa(), SCIPeventCreateRowDeletedSepa(), SCIPeventqueueAdd(), SCIProwCapture(), SCIProwChgLocal(), SCIProwGetLhs(), SCIProwGetName(), SCIProwGetNNonz(), SCIProwGetObjParallelism(), SCIProwGetRhs(), SCIProwIsInLP(), SCIProwIsLocal(), SCIProwIsModifiable(), SCIProwRelease(), SCIPsetGetSepaMaxcuts(), SCIPsetInfinity(), SCIPsetIsInfinity(), SCIP_SepaStore::scores, sepastoreEnsureCutsMem(), sepastoreIsBdchgApplicable(), sepastoreIsCutRedundant(), and sepastoreIsCutRedundantOrInfeasible().

Referenced by SCIPsepastoreAddCut().

static SCIP_RETCODE sepastoreDelCut ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_EVENTQUEUE *  eventqueue, SCIP_EVENTFILTER *  eventfilter, SCIP_LP *  lp, int  pos  )

static

removes a non-forced cut from the separation storage

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data
pos	position of cut to delete

Definition at line 504 of file sepastore.c.

References SCIP_SepaStore::cuts, SCIP_SepaStore::efficacies, SCIP_EventFilter::eventmask, SCIP_EventFilter::len, SCIP_SepaStore::ncuts, SCIP_SepaStore::nforcedcuts, NULL, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_CALL, SCIP_EVENTTYPE_ROWDELETEDSEPA, SCIP_OKAY, SCIPeventCreateRowDeletedSepa(), SCIPeventqueueAdd(), SCIProwRelease(), and SCIP_SepaStore::scores.

Referenced by SCIPsepastoreApplyCuts(), SCIPsepastoreRemoveInefficaciousCuts(), and sepastoreUpdateOrthogonalities().

SCIP_RETCODE SCIPsepastoreAddCut	(	SCIP_SEPASTORE *	sepastore,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_LP *	lp,
		SCIP_SOL *	sol,
		SCIP_ROW *	cut,
		SCIP_Bool	forcecut,
		SCIP_Bool	root,
		SCIP_Bool *	infeasible
	)

adds cut to separation storage and captures it; if the cut should be forced to enter the LP, an infinite score has to be used

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data
sol	primal solution that was separated, or NULL for LP solution
cut	separated cut
forcecut	should the cut be forced to enter the LP?
root	are we at the root node?
infeasible	pointer to store whether the cut is infeasible

Definition at line 546 of file sepastore.c.

References SCIP_SepaStore::initiallp, SCIP_SepaStore::ncutsfound, SCIP_SepaStore::ncutsfoundround, NULL, SCIP_CALL, SCIP_OKAY, SCIPdebugCheckRow, SCIProwGetLhs(), SCIProwGetRhs(), SCIProwIsInLP(), SCIPsetIsInfinity(), and sepastoreAddCut().

Referenced by SCIPaddCut(), and SCIPcutpoolSeparate().

static SCIP_RETCODE sepastoreApplyLb ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_PROB *  transprob, SCIP_PROB *  origprob, SCIP_TREE *  tree, SCIP_LP *  lp, SCIP_BRANCHCAND *  branchcand, SCIP_EVENTQUEUE *  eventqueue, SCIP_VAR *  var, SCIP_Real  bound, SCIP_Bool  local, SCIP_Bool *  applied, SCIP_Bool *  cutoff  )

static

applies a lower bound change

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics
transprob	transformed problem
origprob	original problem
tree	branch and bound tree
lp	LP data
branchcand	branching candidate storage
eventqueue	event queue
var	problem variable
bound	new lower bound of variable
local	is it a local bound change? (otherwise global)
applied	pointer to store whether the domain change was applied
cutoff	pointer to store TRUE, if an infeasibility has been detected

Definition at line 584 of file sepastore.c.

References FALSE, NULL, SCIP_BOUNDTYPE_LOWER, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIPnodeAddBoundchg(), SCIPnodeCutoff(), SCIPsetIsFeasLE(), SCIPsetIsGT(), SCIPtreeGetCurrentNode(), SCIPtreeGetRootNode(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), and TRUE.

Referenced by sepastoreApplyBdchg().

static SCIP_RETCODE sepastoreApplyUb ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_PROB *  transprob, SCIP_PROB *  origprob, SCIP_TREE *  tree, SCIP_LP *  lp, SCIP_BRANCHCAND *  branchcand, SCIP_EVENTQUEUE *  eventqueue, SCIP_VAR *  var, SCIP_Real  bound, SCIP_Bool  local, SCIP_Bool *  applied, SCIP_Bool *  cutoff  )

static

applies an upper bound change

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics
transprob	transformed problem
origprob	original problem
tree	branch and bound tree
lp	LP data
branchcand	branching candidate storage
eventqueue	event queue
var	problem variable
bound	new upper bound of variable
local	is it a local bound change? (otherwise global)
applied	pointer to store whether the domain change was applied
cutoff	pointer to store TRUE, if an infeasibility has been detected

Definition at line 664 of file sepastore.c.

References FALSE, NULL, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIPnodeAddBoundchg(), SCIPnodeCutoff(), SCIPsetIsFeasGE(), SCIPsetIsLT(), SCIPtreeGetCurrentNode(), SCIPtreeGetRootNode(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), and TRUE.

Referenced by sepastoreApplyBdchg().

static SCIP_RETCODE sepastoreApplyBdchg ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_PROB *  transprob, SCIP_PROB *  origprob, SCIP_TREE *  tree, SCIP_LP *  lp, SCIP_BRANCHCAND *  branchcand, SCIP_EVENTQUEUE *  eventqueue, SCIP_ROW *  cut, SCIP_EFFICIACYCHOICE  efficiacychoice, SCIP_Bool *  applied, SCIP_Bool *  cutoff  )

static

applies a cut that is a bound change directly as bound change instead of adding it as row to the LP

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics
transprob	transformed problem
origprob	original problem
tree	branch and bound tree
lp	LP data
branchcand	branching candidate storage
eventqueue	event queue
cut	cut with a single variable
efficiacychoice	type of solution to base feasibility computation on
applied	pointer to store whether the domain change was applied
cutoff	pointer to store whether an empty domain was created

Definition at line 744 of file sepastore.c.

References FALSE, SCIP_SepaStore::initiallp, MAX, SCIP_SepaStore::ncutsapplied, NULL, REALABS, SCIP_Bool, SCIP_CALL, SCIP_EFFICIACYCHOICE_LP, SCIP_EFFICIACYCHOICE_NLP, SCIP_EFFICIACYCHOICE_RELAX, SCIP_INVALID, SCIP_INVALIDCALL, SCIP_OKAY, SCIP_Real, SCIPcolGetVar(), SCIPdebugMessage, SCIPerrorMessage, SCIProwGetCols(), SCIProwGetConstant(), SCIProwGetLhs(), SCIProwGetLPFeasibility(), SCIProwGetName(), SCIProwGetNLPFeasibility(), SCIProwGetNNonz(), SCIProwGetRelaxFeasibility(), SCIProwGetRhs(), SCIProwGetVals(), SCIProwIsLocal(), SCIProwIsModifiable(), SCIPsetEpsilon(), SCIPsetIsFeasZero(), SCIPsetIsInfinity(), SCIPsetIsZero(), sepastoreApplyLb(), and sepastoreApplyUb().

Referenced by SCIPsepastoreApplyCuts().

static SCIP_RETCODE sepastoreUpdateOrthogonalities ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_EVENTQUEUE *  eventqueue, SCIP_EVENTFILTER *  eventfilter, SCIP_LP *  lp, SCIP_ROW *  cut, SCIP_Real  mincutorthogonality  )

static

updates the orthogonalities and scores of the non-forced cuts after the given cut was added to the LP

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data
cut	cut that was applied
mincutorthogonality	minimal orthogonality of cuts to apply to LP

Definition at line 872 of file sepastore.c.

References SCIP_SepaStore::cuts, SCIP_SepaStore::efficacies, SCIP_SepaStore::nforcedcuts, NULL, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIProwGetName(), SCIProwGetNNonz(), SCIProwGetOrthogonality(), SCIP_SepaStore::scores, and sepastoreDelCut().

Referenced by sepastoreApplyCut().

static SCIP_RETCODE sepastoreApplyCut ( SCIP_SEPASTORE *  sepastore, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_EVENTQUEUE *  eventqueue, SCIP_EVENTFILTER *  eventfilter, SCIP_LP *  lp, SCIP_ROW *  cut, SCIP_Real  mincutorthogonality, int  depth, SCIP_EFFICIACYCHOICE  efficiacychoice, int *  ncutsapplied  )

static

applies the given cut to the LP and updates the orthogonalities and scores of remaining cuts

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics
eventqueue	event queue
eventfilter	global event filter
lp	LP data
cut	cut to apply to the LP
mincutorthogonality	minimal orthogonality of cuts to apply to LP
depth	depth of current node
efficiacychoice	type of solution to base feasibility computation on
ncutsapplied	pointer to count the number of applied cuts

Definition at line 924 of file sepastore.c.

References SCIP_SepaStore::initiallp, MAX, SCIP_SepaStore::ncutsapplied, NULL, SCIP_Row::origin, SCIP_Row::origintype, SCIP_CALL, SCIP_EFFICIACYCHOICE_LP, SCIP_EFFICIACYCHOICE_NLP, SCIP_EFFICIACYCHOICE_RELAX, SCIP_INVALID, SCIP_INVALIDCALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_ROWORIGINTYPE_CONS, SCIP_ROWORIGINTYPE_SEPA, SCIP_ROWORIGINTYPE_UNSPEC, SCIPconshdlrIncNAppliedCuts(), SCIPdebugMessage, SCIPerrorMessage, SCIPlpAddRow(), SCIProwGetLPFeasibility(), SCIProwGetName(), SCIProwGetNLPFeasibility(), SCIProwGetRelaxFeasibility(), SCIProwIsInLP(), SCIPsepaIncNAppliedCuts(), SCIPsetEpsilon(), and sepastoreUpdateOrthogonalities().

Referenced by SCIPsepastoreApplyCuts().

static int sepastoreGetBestCut ( SCIP_SEPASTORE *  sepastore )

static

returns the position of the best non-forced cut in the cuts array

Parameters

sepastore

separation storage

Definition at line 1014 of file sepastore.c.

References SCIP_SepaStore::nforcedcuts, NULL, SCIP_INVALID, SCIP_Real, SCIP_REAL_MIN, and SCIP_SepaStore::scores.

Referenced by SCIPsepastoreApplyCuts().

static SCIP_RETCODE computeScore ( SCIP_SEPASTORE *  sepastore, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_LP *  lp, SCIP_Bool  handlepool, int  pos, SCIP_EFFICIACYCHOICE  efficiacychoice  )

static

computes score for current LP solution and initialized orthogonalities

Parameters

sepastore	separation storage
set	global SCIP settings
stat	problem statistics
lp	LP data
handlepool	whether the efficacy of cuts in the pool should be reduced
pos	position of cut to handle
efficiacychoice	type of solution to base efficiacy computation on

Definition at line 1042 of file sepastore.c.

References SCIP_SepaStore::cuts, SCIP_SepaStore::efficacies, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_EFFICIACYCHOICE_LP, SCIP_EFFICIACYCHOICE_NLP, SCIP_EFFICIACYCHOICE_RELAX, SCIP_INVALID, SCIP_INVALIDCALL, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIProwGetLPEfficacy(), SCIProwGetNLPEfficacy(), SCIProwGetRelaxEfficacy(), SCIProwIsInGlobalCutpool(), SCIPsetIsInfinity(), and SCIP_SepaStore::scores.

Referenced by SCIPsepastoreApplyCuts(), and SCIPsepastoreRemoveInefficaciousCuts().

SCIP_RETCODE SCIPsepastoreApplyCuts	(	SCIP_SEPASTORE *	sepastore,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	transprob,
		SCIP_PROB *	origprob,
		SCIP_TREE *	tree,
		SCIP_LP *	lp,
		SCIP_BRANCHCAND *	branchcand,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_Bool	root,
		SCIP_EFFICIACYCHOICE	efficiacychoice,
		SCIP_Bool *	cutoff
	)

adds cuts to the LP and clears separation storage

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics
transprob	transformed problem
origprob	original problem
tree	branch and bound tree
lp	LP data
branchcand	branching candidate storage
eventqueue	event queue
eventfilter	global event filter
root	are we at the root node?
efficiacychoice	type of solution to base efficiacy computation on
cutoff	pointer to store whether an empty domain was created

Definition at line 1097 of file sepastore.c.

References computeScore(), SCIP_SepaStore::cuts, SCIP_SepaStore::efficacies, FALSE, MAX, SCIP_SepaStore::ncuts, SCIP_SepaStore::nforcedcuts, NULL, SCIP_SepaStore::objparallelisms, SCIP_SepaStore::orthogonalities, SCIP_Bool, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPnodeGetDepth(), SCIProwCapture(), SCIProwGetName(), SCIProwGetNNonz(), SCIProwIsModifiable(), SCIProwRelease(), SCIPsepastoreClearCuts(), SCIPsetGetSepaMaxcuts(), SCIPsetIsFeasPositive(), SCIPsetIsInfinity(), SCIPtreeGetCurrentNode(), SCIP_SepaStore::scores, sepastoreApplyBdchg(), sepastoreApplyCut(), sepastoreDelCut(), sepastoreGetBestCut(), sepastoreIsBdchgApplicable(), and TRUE.

Referenced by applyCuts(), priceAndCutLoop(), and SCIPinitConssLP().

SCIP_RETCODE SCIPsepastoreClearCuts	(	SCIP_SEPASTORE *	sepastore,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_LP *	lp
	)

clears the separation storage without adding the cuts to the LP

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data

Definition at line 1226 of file sepastore.c.

References BMSfreeMemoryArrayNull, SCIP_SepaStore::cuts, SCIP_SepaStore::cutssize, SCIP_EventFilter::eventmask, SCIP_SepaStore::initiallp, SCIP_EventFilter::len, SCIP_SepaStore::ncuts, SCIP_SepaStore::ncutsfoundround, SCIP_SepaStore::nforcedcuts, NULL, SCIP_CALL, SCIP_EVENTTYPE_ROWDELETEDSEPA, SCIP_OKAY, SCIPdebugMessage, SCIPeventCreateRowDeletedSepa(), SCIPeventqueueAdd(), and SCIProwRelease().

Referenced by applyCuts(), priceAndCutLoop(), SCIPclearCuts(), and SCIPsepastoreApplyCuts().

SCIP_RETCODE SCIPsepastoreRemoveInefficaciousCuts	(	SCIP_SEPASTORE *	sepastore,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_LP *	lp,
		SCIP_Bool	root,
		SCIP_EFFICIACYCHOICE	efficiacychoice
	)

removes cuts that are inefficacious w.r.t. the current LP solution from separation storage without adding the cuts to the LP

Parameters

sepastore	separation storage
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
eventfilter	event filter for global events
lp	LP data
root	are we at the root node?
efficiacychoice	type of solution to base efficiacy computation on

Definition at line 1274 of file sepastore.c.

References computeScore(), SCIP_SepaStore::efficacies, FALSE, SCIP_SepaStore::nforcedcuts, NULL, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIPdebugMessage, SCIPsetIsEfficacious(), and sepastoreDelCut().

Referenced by SCIPremoveInefficaciousCuts().

SCIP_Bool SCIPsepastoreIsCutApplicable	(	SCIP_SET *	set,
		SCIP_ROW *	cut
	)

indicates whether a cut is applicable

A cut is applicable if it is modifiable, not a bound change, or a bound change that changes bounds by at least epsilon.

Parameters

set	global SCIP settings
cut	cut to check

Definition at line 1315 of file sepastore.c.

References SCIProwGetNNonz(), SCIProwIsModifiable(), and sepastoreIsBdchgApplicable().

Referenced by SCIPisCutApplicable().

SCIP_ROW** SCIPsepastoreGetCuts

(

SCIP_SEPASTORE *

sepastore

)

get cuts in the separation storage

Parameters

sepastore

separation storage

Definition at line 1324 of file sepastore.c.

References SCIP_SepaStore::cuts, and NULL.

Referenced by SCIPgetCuts().

int SCIPsepastoreGetNCuts

(

SCIP_SEPASTORE *

sepastore

)

get number of cuts in the separation storage

Parameters

sepastore

separation storage

Definition at line 1334 of file sepastore.c.

References SCIP_SepaStore::ncuts, and NULL.

Referenced by applyCuts(), cutpoolSeparate(), enforceConstraints(), priceAndCutLoop(), propAndSolve(), SCIPbranchruleExecExternSol(), SCIPbranchruleExecLPSol(), SCIPconshdlrEnforceLPSol(), SCIPconshdlrSeparateLP(), SCIPconshdlrSeparateSol(), SCIPcutpoolSeparate(), SCIPgetNCuts(), SCIPsepaExecLP(), SCIPsepaExecSol(), separationRoundLP(), separationRoundSol(), solveNode(), and solveNodeLP().

int SCIPsepastoreGetNCutsFound

(

SCIP_SEPASTORE *

sepastore

)

get total number of cuts found so far

Parameters

sepastore

separation storage

Definition at line 1344 of file sepastore.c.

References SCIP_SepaStore::ncutsfound, and NULL.

Referenced by SCIPgetNCutsFound().

int SCIPsepastoreGetNCutsFoundRound

(

SCIP_SEPASTORE *

sepastore

)

get number of cuts found so far in current separation round

Parameters

sepastore

separation storage

Definition at line 1354 of file sepastore.c.

References SCIP_SepaStore::ncutsfoundround, and NULL.

Referenced by SCIPgetNCutsFoundRound().

int SCIPsepastoreGetNCutsApplied

(

SCIP_SEPASTORE *

sepastore

)

get total number of cuts applied to the LPs

Parameters

sepastore

separation storage

Definition at line 1364 of file sepastore.c.

References SCIP_SepaStore::ncutsapplied, and NULL.

Referenced by SCIPgetNCutsApplied().