heur_indicator.h File Reference

Detailed Description

handle partial solutions for linear problems with indicators and otherwise continuous variables

Author

Marc Pfetsch

For linear problems with indicators and otherwise continuous variables, the indicator constraint handler can produce partial solutions, i.e., values for the indicator variables. This partial solution can be passed to this heuristic, which then fixes these values and solves an LP. Additionally a local search for a better solution is added.

Definition in file heur_indicator.h.

#include "scip/scip.h"

Go to the source code of this file.

Functions
SCIP_RETCODE	SCIPincludeHeurIndicator (SCIP *scip)
SCIP_RETCODE	SCIPheurPassIndicator (SCIP *scip, SCIP_HEUR *heur, int nindconss, SCIP_CONS **indconss, SCIP_Bool *solcand)

Function Documentation

SCIP_RETCODE SCIPincludeHeurIndicator

(

SCIP *

scip

)

creates the indicator primal heuristic and includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 515 of file heur_indicator.c.

References DEFAULT_IMPROVESOLS, DEFAULT_ONEOPT, HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, HEUR_PRIORITY, HEUR_TIMING, HEUR_USESSUBSCIP, NULL, SCIP_CALL, SCIP_OKAY, SCIPaddBoolParam(), SCIPallocMemory, SCIPincludeHeurBasic(), SCIPsetHeurCopy(), SCIPsetHeurFree(), SCIPsetHeurInit(), and TRUE.

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeDefaultPlugins().

SCIP_RETCODE SCIPheurPassIndicator	(	SCIP *	scip,
		SCIP_HEUR *	heur,
		int	nindconss,
		SCIP_CONS **	indconss,
		SCIP_Bool *	solcand
	)

pass partial solution for indicator variables to heuristic

Parameters

scip	SCIP data structure
heur	indicator heuristic
nindconss	number of indicator constraints
indconss	indicator constraints
solcand	values for indicator variables in partial solution

Definition at line 558 of file heur_indicator.c.

References BMScopyMemoryArray, HEUR_NAME, NULL, SCIP_CALL, SCIP_OKAY, SCIPduplicateBlockMemoryArray, SCIPfreeBlockMemoryArray, SCIPheurGetData(), and SCIPheurGetName().

Referenced by extendToCover().