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Solving Constraint Integer Programs
heur_oneopt.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_oneopt.h
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* @ingroup PRIMALHEURISTICS
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* @brief Improvement heuristic that alters single variable values
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* @author Timo Berthold
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*
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* Oneopt is a straightforward improvement heuristic: given a feasible MIP solution, the value of
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* an integer variable x<sub>j</sub> can be decreased for c<sub>j</sub> > 0 or increased for c<sub>j</sub> < 0
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* if the resulting solution is still feasible. If more than one variable can be shifted, they are sorted by
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* non-decreasing impact on the objective and sequentially shifted until no more improvements can be
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* obtained.
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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_ONEOPT_H__
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#define __SCIP_HEUR_ONEOPT_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 oneopt primal 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
SCIPincludeHeurOneopt
(
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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
SCIPincludeHeurOneopt
SCIP_RETCODE SCIPincludeHeurOneopt(SCIP *scip)
Definition:
heur_oneopt.c:895
scip
Definition:
objbranchrule.h:33
scip.h
SCIP callable library.