SCIP
Solving Constraint Integer Programs
SCIP_Diveset Struct Reference
Detailed Description
common settings for diving heuristics
Definition at line 37 of file struct_heur.h.
#include <struct_heur.h>
Public Member Functions | |
| SCIP_DECL_DIVESETGETSCORE ((*divesetgetscore)) | |
Member Function Documentation
◆ SCIP_DECL_DIVESETGETSCORE()
| SCIP_Diveset::SCIP_DECL_DIVESETGETSCORE | ( | * | divesetgetscore | ) |
method for candidate score and rounding direction
Field Documentation
◆ heur
| SCIP_HEUR* SCIP_Diveset::heur |
the heuristic to which this dive set belongs
Definition at line 39 of file struct_heur.h.
Referenced by heurAddDiveset(), SCIPdivesetCreate(), and SCIPdivesetGetHeur().
◆ name
| char* SCIP_Diveset::name |
name of dive controller, in case that a heuristic has several
Definition at line 40 of file struct_heur.h.
Referenced by divesetFree(), SCIPdivesetCreate(), and SCIPdivesetGetName().
◆ sol
| SCIP_SOL* SCIP_Diveset::sol |
working solution of this dive set
Definition at line 41 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), SCIPdivesetGetWorkSolution(), and SCIPdivesetSetWorkSolution().
◆ randnumgen
| SCIP_RANDNUMGEN* SCIP_Diveset::randnumgen |
random number generator
Definition at line 42 of file struct_heur.h.
Referenced by divesetFree(), SCIPdivesetCreate(), SCIPdivesetGetRandnumgen(), and SCIPdivesetReset().
◆ minreldepth
| SCIP_Real SCIP_Diveset::minreldepth |
minimal relative depth to start diving
Definition at line 43 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetMinRelDepth().
◆ maxreldepth
| SCIP_Real SCIP_Diveset::maxreldepth |
maximal relative depth to start diving
Definition at line 44 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetMaxRelDepth().
◆ maxlpiterquot
| SCIP_Real SCIP_Diveset::maxlpiterquot |
maximal fraction of diving LP iterations compared to node LP iterations
Definition at line 45 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetMaxLPIterQuot().
◆ maxdiveubquot
| SCIP_Real SCIP_Diveset::maxdiveubquot |
maximal quotient (curlowerbound - lowerbound)/(cutoffbound - lowerbound) where diving is performed (0.0: no limit)
Definition at line 46 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetUbQuot().
◆ maxdiveavgquot
| SCIP_Real SCIP_Diveset::maxdiveavgquot |
maximal quotient (curlowerbound - lowerbound)/(avglowerbound - lowerbound) where diving is performed (0.0: no limit)
Definition at line 48 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetAvgQuot().
◆ maxdiveubquotnosol
| SCIP_Real SCIP_Diveset::maxdiveubquotnosol |
maximal UBQUOT when no solution was found yet (0.0: no limit)
Definition at line 50 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetUbQuotNoSol().
◆ maxdiveavgquotnosol
| SCIP_Real SCIP_Diveset::maxdiveavgquotnosol |
maximal AVGQUOT when no solution was found yet (0.0: no limit)
Definition at line 51 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetAvgQuotNoSol().
◆ lpresolvedomchgquot
| SCIP_Real SCIP_Diveset::lpresolvedomchgquot |
percentage of immediate domain changes during probing to trigger LP resolve
Definition at line 52 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetLPResolveDomChgQuot().
◆ nlpiterations
| SCIP_Longint SCIP_Diveset::nlpiterations |
LP iterations used in this dive set
Definition at line 53 of file struct_heur.h.
Referenced by SCIPdivesetGetNLPIterations(), SCIPdivesetReset(), and SCIPdivesetUpdateLPStats().
◆ nlps
| SCIP_Longint SCIP_Diveset::nlps |
the number of LPs solved by this dive set
Definition at line 54 of file struct_heur.h.
Referenced by SCIPdivesetReset(), and SCIPdivesetUpdateLPStats().
◆ totaldepth
| SCIP_Longint SCIP_Diveset::totaldepth |
the total depth used in this dive set
Definition at line 55 of file struct_heur.h.
Referenced by SCIPdivesetGetAvgDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ totalsoldepth
| SCIP_Longint SCIP_Diveset::totalsoldepth |
the sum of depths at which this dive set found solutions
Definition at line 56 of file struct_heur.h.
Referenced by SCIPdivesetGetAvgSolutionDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ totalnnodes
| SCIP_Longint SCIP_Diveset::totalnnodes |
the total number of probing nodes explored by this dive set
Definition at line 57 of file struct_heur.h.
Referenced by SCIPdivesetGetNProbingNodes(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ totalnbacktracks
| SCIP_Longint SCIP_Diveset::totalnbacktracks |
the total number of backtracks during the execution of this dive set
Definition at line 58 of file struct_heur.h.
Referenced by SCIPdivesetGetNBacktracks(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ nsolsfound
| SCIP_Longint SCIP_Diveset::nsolsfound |
the total number of solutions found
Definition at line 59 of file struct_heur.h.
Referenced by SCIPdivesetGetNSols(), SCIPdivesetGetSolSuccess(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ nbestsolsfound
| SCIP_Longint SCIP_Diveset::nbestsolsfound |
the total number of best solutions found
Definition at line 60 of file struct_heur.h.
Referenced by SCIPdivesetGetSolSuccess(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ nconflictsfound
| SCIP_Longint SCIP_Diveset::nconflictsfound |
the total number of added conflicts during the execution of this dive set
Definition at line 61 of file struct_heur.h.
Referenced by SCIPdivesetGetNConflicts(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ maxlpiterofs
| int SCIP_Diveset::maxlpiterofs |
additional number of allowed LP iterations
Definition at line 62 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetMaxLPIterOffset().
◆ mindepth
| int SCIP_Diveset::mindepth |
the minimum depth reached by all executions of the dive set
Definition at line 63 of file struct_heur.h.
Referenced by SCIPdivesetGetMinDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ maxdepth
| int SCIP_Diveset::maxdepth |
the maximum depth reached by an execution of the dive set
Definition at line 64 of file struct_heur.h.
Referenced by SCIPdivesetGetMaxDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ minsoldepth
| int SCIP_Diveset::minsoldepth |
the minimum depth at which this dive set found a solution
Definition at line 65 of file struct_heur.h.
Referenced by SCIPdivesetGetMinSolutionDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ maxsoldepth
| int SCIP_Diveset::maxsoldepth |
the maximum depth at which this dive set found a solution
Definition at line 66 of file struct_heur.h.
Referenced by SCIPdivesetGetMaxSolutionDepth(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ ncalls
| int SCIP_Diveset::ncalls |
the total number of calls of this dive set
Definition at line 67 of file struct_heur.h.
Referenced by SCIPdivesetGetAvgDepth(), SCIPdivesetGetNCalls(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ nsolcalls
| int SCIP_Diveset::nsolcalls |
number of calls with a leaf solution
Definition at line 68 of file struct_heur.h.
Referenced by SCIPdivesetGetAvgSolutionDepth(), SCIPdivesetGetNSolutionCalls(), SCIPdivesetReset(), and SCIPdivesetUpdateStats().
◆ lpsolvefreq
| int SCIP_Diveset::lpsolvefreq |
LP solve frequency for diving heuristics
Definition at line 69 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetGetLPSolveFreq().
◆ initialseed
| unsigned int SCIP_Diveset::initialseed |
initial seed for the random number generator
Definition at line 70 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetReset().
◆ backtrack
| SCIP_Bool SCIP_Diveset::backtrack |
use one level of backtracking if infeasibility is encountered?
Definition at line 71 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetUseBacktrack().
◆ onlylpbranchcands
| SCIP_Bool SCIP_Diveset::onlylpbranchcands |
should only LP branching candidates be considered instead of the slower but more general constraint handler diving variable selection?
Definition at line 72 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), and SCIPdivesetUseOnlyLPBranchcands().
◆ divetypemask
| SCIP_DIVETYPE SCIP_Diveset::divetypemask |
bit mask that represents the supported dive types by this dive set
Definition at line 74 of file struct_heur.h.
Referenced by SCIPdivesetCreate(), SCIPdivesetGetScore(), and SCIPdivesetSupportsType().