47#define HEUR_NAME "guideddiving"
48#define HEUR_DESC "LP diving heuristic that chooses fixings in direction of incumbent solutions"
49#define HEUR_DISPCHAR SCIP_HEURDISPCHAR_DIVING
50#define HEUR_PRIORITY -1007000
53#define HEUR_MAXDEPTH -1
54#define HEUR_TIMING SCIP_HEURTIMING_AFTERLPPLUNGE
55#define HEUR_USESSUBSCIP FALSE
56#define DIVESET_DIVETYPES SCIP_DIVETYPE_INTEGRALITY
57#define DIVESET_ISPUBLIC TRUE
64#define DEFAULT_MINRELDEPTH 0.0
65#define DEFAULT_MAXRELDEPTH 1.0
66#define DEFAULT_MAXLPITERQUOT 0.05
67#define DEFAULT_MAXLPITEROFS 1000
68#define DEFAULT_MAXDIVEUBQUOT 0.8
70#define DEFAULT_MAXDIVEAVGQUOT 0.0
72#define DEFAULT_BACKTRACK TRUE
73#define DEFAULT_LPRESOLVEDOMCHGQUOT 0.15
74#define DEFAULT_LPSOLVEFREQ 0
75#define DEFAULT_ONLYLPBRANCHCANDS FALSE
77#define DEFAULT_RANDSEED 127
int SCIPgetNIntVars(SCIP *scip)
SCIP_Real SCIPgetObjNorm(SCIP *scip)
int SCIPgetNBinVars(SCIP *scip)
SCIP_RETCODE SCIPincludeHeurGuideddiving(SCIP *scip)
SCIP_RETCODE SCIPcreateDiveset(SCIP *scip, SCIP_DIVESET **diveset, SCIP_HEUR *heur, const char *name, SCIP_Real minreldepth, SCIP_Real maxreldepth, SCIP_Real maxlpiterquot, SCIP_Real maxdiveubquot, SCIP_Real maxdiveavgquot, SCIP_Real maxdiveubquotnosol, SCIP_Real maxdiveavgquotnosol, SCIP_Real lpresolvedomchgquot, int lpsolvefreq, int maxlpiterofs, unsigned int initialseed, SCIP_Bool backtrack, SCIP_Bool onlylpbranchcands, SCIP_Bool ispublic, SCIP_Bool specificsos1score, SCIP_DECL_DIVESETGETSCORE((*divesetgetscore)),)
SCIP_RETCODE SCIPsetHeurFree(SCIP *scip, SCIP_HEUR *heur,)
SCIP_HEURDATA * SCIPheurGetData(SCIP_HEUR *heur)
SCIP_RETCODE SCIPincludeHeurBasic(SCIP *scip, SCIP_HEUR **heur, const char *name, const char *desc, char dispchar, int priority, int freq, int freqofs, int maxdepth, SCIP_HEURTIMING timingmask, SCIP_Bool usessubscip, SCIP_DECL_HEUREXEC((*heurexec)), SCIP_HEURDATA *heurdata)
SCIP_RETCODE SCIPsetHeurCopy(SCIP *scip, SCIP_HEUR *heur,)
int SCIPheurGetNDivesets(SCIP_HEUR *heur)
SCIP_RETCODE SCIPsetHeurExit(SCIP *scip, SCIP_HEUR *heur,)
SCIP_RETCODE SCIPsetHeurInit(SCIP *scip, SCIP_HEUR *heur,)
const char * SCIPheurGetName(SCIP_HEUR *heur)
SCIP_DIVESET ** SCIPheurGetDivesets(SCIP_HEUR *heur)
SCIP_Bool SCIPhasCurrentNodeLP(SCIP *scip)
#define SCIPfreeBlockMemory(scip, ptr)
#define SCIPallocBlockMemory(scip, ptr)
SCIP_SOL * SCIPgetBestSol(SCIP *scip)
int SCIPgetNSols(SCIP *scip)
SCIP_Bool SCIPsolIsOriginal(SCIP_SOL *sol)
SCIP_Real SCIPgetSolVal(SCIP *scip, SCIP_SOL *sol, SCIP_VAR *var)
SCIP_Bool SCIPisPositive(SCIP *scip, SCIP_Real val)
SCIP_Bool SCIPvarMayRoundUp(SCIP_VAR *var)
SCIP_Bool SCIPvarIsBinary(SCIP_VAR *var)
SCIP_Bool SCIPvarMayRoundDown(SCIP_VAR *var)
SCIP_Real SCIPvarGetObj(SCIP_VAR *var)
SCIPperformGenericDivingAlgorithm(scip, diveset, heurdata->sol, heur, result, nodeinfeasible, lpiterlimit, SCIP_DIVECONTEXT_ADAPTIVE))
#define DEFAULT_ONLYLPBRANCHCANDS
#define DEFAULT_MAXDIVEUBQUOT
#define DEFAULT_LPRESOLVEDOMCHGQUOT
SCIPheurSetData(heur, NULL)
#define DEFAULT_MAXLPITERQUOT
#define DEFAULT_MAXDIVEAVGQUOT
#define DEFAULT_LPSOLVEFREQ
#define DEFAULT_BACKTRACK
#define DEFAULT_MAXRELDEPTH
#define DEFAULT_MAXLPITEROFS
SCIPfreeSol(scip, &heurdata->sol))
static SCIP_DIVESET * diveset
#define DIVESET_DIVETYPES
#define DEFAULT_MINRELDEPTH
SCIPcreateSol(scip, &heurdata->sol, heur))
LP diving heuristic that chooses fixings in direction of incumbent solutions.
assert(minobj< SCIPgetCutoffbound(scip))
methods commonly used by primal heuristics
public methods for primal heuristics
public methods for message output
public methods for primal CIP solutions
public methods for problem variables
public methods for primal heuristic plugins and divesets
public methods for the LP relaxation, rows and columns
public methods for memory management
public methods for numerical tolerances
public methods for global and local (sub)problems
public methods for solutions
#define SCIP_DECL_DIVESETAVAILABLE(x)
#define SCIP_DECL_HEURCOPY(x)
struct SCIP_HeurData SCIP_HEURDATA
#define SCIP_DECL_HEURINIT(x)
#define SCIP_DECL_HEUREXIT(x)
#define SCIP_DECL_HEURFREE(x)
#define SCIP_DECL_DIVESETGETSCORE(x)
#define SCIP_DECL_HEUREXEC(x)
@ SCIP_DIVECONTEXT_SINGLE
enum SCIP_Retcode SCIP_RETCODE