Scippy

SCIP

Solving Constraint Integer Programs

branch_multaggr.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) 2002-2024 Zuse Institute Berlin (ZIB) */
7/* */
8/* Licensed under the Apache License, Version 2.0 (the "License"); */
9/* you may not use this file except in compliance with the License. */
10/* You may obtain a copy of the License at */
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12/* http://www.apache.org/licenses/LICENSE-2.0 */
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20/* You should have received a copy of the Apache-2.0 license */
21/* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22/* */
23/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24
25/**@file branch_multaggr.h
26 * @ingroup BRANCHINGRULES
27 * @brief fullstrong branching on fractional and multi-aggregated variables
28 * @author Anna Melchiori
29 * @author Gerald Gamrath
30 *
31 * This branching rule uses all fractional binary and integer variables as candidates,
32 * as well as fractional multiaggregated binary and integer variables. Although not
33 * directly contained in the presolved problem anymore, the multi-aggregation provides
34 * an affine linear sum of integer variables, on which branching can be performed.
35 *
36 * For more details, see
37 * G.Gamrath, A.Melchiori, T.Berthold, A.M.Gleixner, D.Salvagnin: Branching on Multi-aggregated Variables
38 * (http://dx.doi.org/10.1007/978-3-319-18008-3_10)
39 */
40
41/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
42
43#ifndef __SCIP_BRANCH_MULTAGGR_H__
44#define __SCIP_BRANCH_MULTAGGR_H__
45
46
47#include "scip/def.h"
48#include "scip/type_retcode.h"
49#include "scip/type_scip.h"
50
51#ifdef __cplusplus
52extern "C" {
53#endif
54
55/** creates the multi-aggregated branching rule and includes it in SCIP
56 *
57 * @ingroup BranchingRuleIncludes
58 */
59SCIP_EXPORT
61 SCIP* scip /**< SCIP data structure */
62 );
63
64#ifdef __cplusplus
65}
66#endif
67
68#endif
common defines and data types used in all packages of SCIP
SCIP_RETCODE SCIPincludeBranchruleMultAggr(SCIP *scip)
type definitions for return codes for SCIP methods
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
type definitions for SCIP's main datastructure