Detailed Description

neighborhood data structure with callbacks, statistics, fixing rate

Definition at line 371 of file heur_alns.c.

Public Member Functions
	DECL_VARFIXINGS ((*varfixings))

	DECL_CHANGESUBSCIP ((*changesubscip))

	DECL_NHINIT ((*nhinit))

	DECL_NHEXIT ((*nhexit))

	DECL_NHFREE ((*nhfree))

	DECL_NHREFSOL ((*nhrefsol))

	DECL_NHDEACTIVATE ((*nhdeactivate))

	DECL_VARFIXINGS ((*varfixings))

	DECL_CHANGESUBSCIP ((*changesubscip))

	DECL_NHINIT ((*nhinit))

	DECL_NHEXIT ((*nhexit))

	DECL_NHFREE ((*nhfree))

	DECL_NHREFSOL ((*nhrefsol))

	DECL_NHDEACTIVATE ((*nhdeactivate))

Data Fields
char *	name

NH_FIXINGRATE	fixingrate

NH_STATS	stats

SCIP_Bool	active

SCIP_Real	priority

union {
DATA_MUTATION * mutation

DATA_CROSSOVER * crossover

DATA_DINS * dins

DATA_TRUSTREGION * trustregion

}	data

HEUR_STATS	stats

int	nodelimit

int	rootnodepriority

union {
DATA_MUTATION * mutation

DATA_CROSSOVER * crossover

DATA_DINS * dins

DATA_TRUSTREGION * trustregion

}	data

Member Function Documentation

◆ DECL_VARFIXINGS() [1/2]

Nh::DECL_VARFIXINGS ( * varfixings )

variable fixings callback for this neighborhood

◆ DECL_CHANGESUBSCIP() [1/2]

Nh::DECL_CHANGESUBSCIP ( * changesubscip )

callback for subproblem changes other than variable fixings

◆ DECL_NHINIT() [1/2]

Nh::DECL_NHINIT ( * nhinit )

initialization callback when a new problem is read

◆ DECL_NHEXIT() [1/2]

Nh::DECL_NHEXIT ( * nhexit )

deinitialization callback when exiting a problem

◆ DECL_NHFREE() [1/2]

Nh::DECL_NHFREE ( * nhfree )

deinitialization callback before SCIP is freed

◆ DECL_NHREFSOL() [1/2]

Nh::DECL_NHREFSOL ( * nhrefsol )

callback function to return a reference solution for further fixings, or NULL

◆ DECL_NHDEACTIVATE() [1/2]

Nh::DECL_NHDEACTIVATE ( * nhdeactivate )

callback function to deactivate neighborhoods on problems where they are irrelevant, or NULL if it is always active

◆ DECL_VARFIXINGS() [2/2]

Nh::DECL_VARFIXINGS ( * varfixings )

variable fixings callback for this neighborhood

◆ DECL_CHANGESUBSCIP() [2/2]

Nh::DECL_CHANGESUBSCIP ( * changesubscip )

callback for subproblem changes other than variable fixings

◆ DECL_NHINIT() [2/2]

Nh::DECL_NHINIT ( * nhinit )

initialization callback when a new problem is read

◆ DECL_NHEXIT() [2/2]

Nh::DECL_NHEXIT ( * nhexit )

deinitialization callback when exiting a problem

◆ DECL_NHFREE() [2/2]

Nh::DECL_NHFREE ( * nhfree )

deinitialization callback before SCIP is freed

◆ DECL_NHREFSOL() [2/2]

Nh::DECL_NHREFSOL ( * nhrefsol )

callback function to return a reference solution for further fixings, or NULL

◆ DECL_NHDEACTIVATE() [2/2]

Nh::DECL_NHDEACTIVATE ( * nhdeactivate )

callback function to deactivate neighborhoods on problems where they are irrelevant, or NULL if it is always active

Field Documentation

◆ name

char * Nh::name

the name of this neighborhood

Definition at line 373 of file heur_alns.c.

Referenced by alnsFreeNeighborhood(), executeLNSHeuristic(), printNeighborhoodStatistics(), schedulerFreeNeighborhood(), and SCIP_DECL_HEUREXEC().

◆ fixingrate

NH_FIXINGRATE Nh::fixingrate

fixing rate for this neighborhood

Definition at line 374 of file heur_alns.c.

Referenced by DECL_VARFIXINGS(), neighborhoodFixVariables(), printNeighborhoodStatistics(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEURINIT(), and updateFixingRate().

◆ stats [1/2]

NH_STATS Nh::stats

statistics for this neighborhood

Definition at line 375 of file heur_alns.c.

Referenced by alnsFreeNeighborhood(), executeLNSHeuristic(), printNeighborhoodStatistics(), schedulerFreeNeighborhood(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEURINIT(), updateHeurStatsLNS(), and updateNeighborhoodStats().

◆ active

SCIP_Bool Nh::active

is this neighborhood active or not?

Definition at line 383 of file heur_alns.c.

Referenced by SCIP_DECL_HEURINITSOL().

◆ priority

SCIP_Real Nh::priority

positive call priority to initialize bandit algorithms

Definition at line 384 of file heur_alns.c.

◆ mutation

DATA_MUTATION* Nh::mutation

mutation data

Definition at line 387 of file heur_alns.c.

Referenced by DECL_NHEXIT(), DECL_NHINIT(), and DECL_VARFIXINGS().

◆ crossover

DATA_CROSSOVER* Nh::crossover

crossover data

Definition at line 388 of file heur_alns.c.

Referenced by DECL_NHEXIT(), DECL_NHFREE(), DECL_NHINIT(), DECL_NHREFSOL(), DECL_VARFIXINGS(), and includeNeighborhoods().

◆ dins

DATA_DINS* Nh::dins

dins data

Definition at line 389 of file heur_alns.c.

Referenced by DECL_NHFREE(), DECL_VARFIXINGS(), and includeNeighborhoods().

◆ trustregion

DATA_TRUSTREGION* Nh::trustregion

trustregion data

Definition at line 390 of file heur_alns.c.

Referenced by DECL_CHANGESUBSCIP(), DECL_NHFREE(), and includeNeighborhoods().

◆ data [1/2]

union { ... } Nh::data

data object for neighborhood specific data

Referenced by DECL_CHANGESUBSCIP(), DECL_NHEXIT(), DECL_NHFREE(), DECL_NHINIT(), DECL_NHREFSOL(), DECL_VARFIXINGS(), and includeNeighborhoods().

◆ stats [2/2]

HEUR_STATS Nh::stats