Scippy

SCIP

Solving Constraint Integer Programs

Functions
heur_rins.h File Reference
Primal Heuristics

Detailed Description

LNS heuristic that combines the incumbent with the LP optimum.

Author
Timo Berthold

RINS is a large neighborhood search improvement heuristic, i.e., it requires a known feasible solution. It solves a sub-SCIP that is created by fixing variables which take the same value in the incumbent and the current node's LP relaxation.

Definition in file heur_rins.h.

#include "scip/scip.h"

Go to the source code of this file.

Functions

SCIP_RETCODE SCIPincludeHeurRins (SCIP *scip)
 

Function Documentation

SCIP_RETCODE SCIPincludeHeurRins ( SCIP *  scip)

creates RINS primal heuristic and includes it in SCIP

creates the RINS primal heuristic and includes it in SCIP

Parameters
scipSCIP data structure

Definition at line 671 of file heur_rins.c.

References DEFAULT_COPYCUTS, DEFAULT_LPLIMFAC, DEFAULT_MAXNODES, DEFAULT_MINFIXINGRATE, DEFAULT_MINIMPROVE, DEFAULT_MINNODES, DEFAULT_NODESOFS, DEFAULT_NODESQUOT, DEFAULT_NWAITINGNODES, DEFAULT_USELPROWS, FALSE, HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, HEUR_PRIORITY, HEUR_TIMING, HEUR_USESSUBSCIP, NULL, SCIP_CALL, SCIP_OKAY, SCIP_REAL_MAX, SCIPaddBoolParam(), SCIPaddIntParam(), SCIPaddRealParam(), SCIPallocMemory, SCIPincludeHeurBasic(), SCIPsetHeurCopy(), SCIPsetHeurFree(), SCIPsetHeurInit(), and TRUE.

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeDefaultPlugins().