heur_masterfracdiving.h File Reference

Detailed Description

master LP diving heuristic that chooses fixings w.r.t. the fractionalities

Author

Tobias Achterberg

Diving heuristic: Iteratively fixes some fractional variable and resolves the LP-relaxation, thereby simulating a depth-first-search in the tree. Fractional Diving chooses the variable with the highest fractionality and rounds it to the nearest integer. One-level backtracking is applied: If the LP gets infeasible, the last fixing is undone, and the opposite fixing is tried. If this is infeasible, too, the procedure aborts.

Definition in file heur_masterfracdiving.h.

#include "scip/scip.h"

Go to the source code of this file.

Functions
SCIP_EXPORT SCIP_RETCODE	GCGincludeHeurMasterfracdiving (SCIP *scip)

Function Documentation

GCGincludeHeurMasterfracdiving()

SCIP_EXPORT SCIP_RETCODE GCGincludeHeurMasterfracdiving

(

SCIP *

scip

)

creates the masterfracdiving heuristic and includes it in GCG

Definition at line 179 of file heur_masterfracdiving.c.

References GCGincludeDivingHeurMaster(), HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, and HEUR_PRIORITY.

Referenced by GCGincludeMasterPlugins().