Detailed Description
master LP diving heuristic that rounds variables with long column vectors
Diving heuristic: Iteratively fixes some fractional variable and resolves the LP-relaxation, thereby simulating a depth-first-search in the tree. Vectorlength Diving chooses the variable with the smallest ratio of potential objective change and number of affected constraints and fixes it. One-level backtracking is applied: If the LP gets infeasible, the last fixings is undone, and the opposite fixing is tried. If this is infeasible, too, the procedure aborts.
Definition in file heur_mastervecldiving.h.
#include "scip/scip.h"
Go to the source code of this file.
Functions | |
SCIP_EXPORT SCIP_RETCODE | GCGincludeHeurMastervecldiving (SCIP *scip) |
Function Documentation
◆ GCGincludeHeurMastervecldiving()
SCIP_EXPORT SCIP_RETCODE GCGincludeHeurMastervecldiving | ( | SCIP * | scip | ) |
creates the mastervecldiving heuristic and includes it in GCG
Definition at line 147 of file heur_mastervecldiving.c.
References GCGincludeDivingHeurMaster(), HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, and HEUR_PRIORITY.
Referenced by GCGincludeMasterPlugins().