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Solving Constraint Integer Programs
heur_veclendiving.h
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/* */
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/* This file is part of the program and library */
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/* SCIP --- Solving Constraint Integer Programs */
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/* */
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/* Copyright (C) 2002-2017 Konrad-Zuse-Zentrum */
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/* fuer Informationstechnik Berlin */
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/* */
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/* SCIP is distributed under the terms of the ZIB Academic License. */
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/* */
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/* You should have received a copy of the ZIB Academic License */
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/* along with SCIP; see the file COPYING. If not email to scip@zib.de. */
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/* */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/**@file heur_veclendiving.h
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* @ingroup PRIMALHEURISTICS
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* @brief LP diving heuristic that rounds variables with long column vectors
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* @author Tobias Achterberg
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*
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* Diving heuristic: Iteratively fixes some fractional variable and resolves the LP-relaxation, thereby simulating a
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* depth-first-search in the tree. Vectorlength Diving chooses the variable with the smallest ratio of potential
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* objective change and number of affected constraints and fixes it. One-level backtracking is applied: If the LP gets
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* infeasible, the last fixings is undone, and the opposite fixing is tried. If this is infeasible, too, the procedure
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* aborts.
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*/
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/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
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#ifndef __SCIP_HEUR_VECLENDIVING_H__
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#define __SCIP_HEUR_VECLENDIVING_H__
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#include "
scip/scip.h
"
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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/** creates the veclendiving heuristic and includes it in SCIP
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*
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* @ingroup PrimalHeuristicIncludes
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*/
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extern
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SCIP_RETCODE
SCIPincludeHeurVeclendiving
(
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SCIP
*
scip
/**< SCIP data structure */
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
Scip
Definition:
struct_scip.h:58
SCIP_RETCODE
enum SCIP_Retcode SCIP_RETCODE
Definition:
type_retcode.h:53
scip
Definition:
objbranchrule.h:33
SCIPincludeHeurVeclendiving
SCIP_RETCODE SCIPincludeHeurVeclendiving(SCIP *scip)
Definition:
heur_veclendiving.c:209
scip.h
SCIP callable library.