Scippy

SCIP

Solving Constraint Integer Programs

heur_indicator.h
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (C) 2002-2017 Konrad-Zuse-Zentrum */
7 /* fuer Informationstechnik Berlin */
8 /* */
9 /* SCIP is distributed under the terms of the ZIB Academic License. */
10 /* */
11 /* You should have received a copy of the ZIB Academic License */
12 /* along with SCIP; see the file COPYING. If not email to scip@zib.de. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file heur_indicator.h
17  * @ingroup PRIMALHEURISTICS
18  * @brief handle partial solutions for linear problems with indicators and otherwise continuous variables
19  * @author Marc Pfetsch
20  *
21  * For linear problems with indicators and otherwise continuous variables, the indicator constraint handler can produce
22  * partial solutions, i.e., values for the indicator variables. This partial solution can be passed to this heuristic,
23  * which then fixes these values and solves an LP. Additionally a local search for a better solution is added.
24  */
25 
26 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
27 
28 #ifndef __SCIP_HEUR_INDICATOR_H__
29 #define __SCIP_HEUR_INDICATOR_H__
30 
31 #include "scip/scip.h"
32 
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36 
37 /** creates the indicator primal heuristic and includes it in SCIP
38  *
39  * @ingroup PrimalHeuristicIncludes
40  */
41 extern
43  SCIP* scip /**< SCIP data structure */
44  );
45 
46 /**@addtogroup PRIMALHEURISTICS
47  *
48  * @{
49  */
50 
51 /** pass partial solution for indicator variables to heuristic */
52 extern
54  SCIP* scip, /**< SCIP data structure */
55  SCIP_HEUR* heur, /**< indicator heuristic */
56  int nindconss, /**< number of indicator constraints */
57  SCIP_CONS** indconss, /**< indicator constraints */
58  SCIP_Bool* solcand /**< values for indicator variables in partial solution */
59  );
60 
61 /* @} */
62 
63 #ifdef __cplusplus
64 }
65 #endif
66 
67 #endif
SCIP_RETCODE SCIPheurPassIndicator(SCIP *scip, SCIP_HEUR *heur, int nindconss, SCIP_CONS **indconss, SCIP_Bool *solcand)
SCIP_RETCODE SCIPincludeHeurIndicator(SCIP *scip)
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:53
#define SCIP_Bool
Definition: def.h:61
SCIP callable library.