Scippy

GCG

Branch-and-Price & Column Generation for Everyone

heur_gcgdins.h
Go to the documentation of this file.
1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program */
4 /* GCG --- Generic Column Generation */
5 /* a Dantzig-Wolfe decomposition based extension */
6 /* of the branch-cut-and-price framework */
7 /* SCIP --- Solving Constraint Integer Programs */
8 /* */
9 /* Copyright (C) 2010-2021 Operations Research, RWTH Aachen University */
10 /* Zuse Institute Berlin (ZIB) */
11 /* */
12 /* This program is free software; you can redistribute it and/or */
13 /* modify it under the terms of the GNU Lesser General Public License */
14 /* as published by the Free Software Foundation; either version 3 */
15 /* of the License, or (at your option) any later version. */
16 /* */
17 /* This program is distributed in the hope that it will be useful, */
18 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
19 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
20 /* GNU Lesser General Public License for more details. */
21 /* */
22 /* You should have received a copy of the GNU Lesser General Public License */
23 /* along with this program; if not, write to the Free Software */
24 /* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.*/
25 /* */
26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
27 
28 /**@file heur_gcgdins.h
29  * @ingroup PRIMALHEURISTICS
30  * @brief DINS primal heuristic
31  * @author Robert Waniek
32  *
33  * DINS combines the ideas of RINS and Local Branching. It
34  * defines the neighborhood by introducing a distance function between the incumbent solution and the optimum of the LP
35  * relaxation. When applied during a branch-and-bound search, it further takes into account how variables change their
36  * values at different nodes of the tree.
37  */
38 
39 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
40 
41 #ifndef __SCIP_HEUR_GCGDINS_H__
42 #define __SCIP_HEUR_GCGDINS_H__
43 
44 #include "scip/scip.h"
45 
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49 
50 /** creates the DINS primal heuristic and includes it in SCIP */
51 SCIP_EXPORT
52 SCIP_RETCODE SCIPincludeHeurGcgdins(
53  SCIP* scip /**< SCIP data structure */
54  );
55 
56 #ifdef __cplusplus
57 }
58 #endif
59 
60 #endif
SCIP_EXPORT SCIP_RETCODE SCIPincludeHeurGcgdins(SCIP *scip)