1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the program and library */ 4 /* SCIP --- Solving Constraint Integer Programs */ 5 /* */ 6 /* Copyright (c) 2002-2023 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 */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 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 heur_crossover.h 26 * @ingroup PRIMALHEURISTICS 27 * @brief LNS heuristic that tries to combine several feasible solutions 28 * @author Timo Berthold 29 * 30 * Crossover is a large neighborhood search improvement heuristic that is inspired by genetic algorithms and requires 31 * more than one feasible solution. For a set of feasible solutions, e.g., the three best found so far, it fixes 32 * variables that take identical values in all of them and solves a corresponding sub-SCIP. See also @ref 33 * heur_mutation.h 34 */ 35 36 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 37 38 #ifndef __SCIP_HEUR_CROSSOVER_H__ 39 #define __SCIP_HEUR_CROSSOVER_H__ 40 41 #include "scip/def.h" 42 #include "scip/type_retcode.h" 43 #include "scip/type_scip.h" 44 45 #ifdef __cplusplus 46 extern "C" { 47 #endif 48 49 /** creates the crossover primal heuristic and includes it in SCIP 50 * 51 * @ingroup PrimalHeuristicIncludes 52 */ 53 SCIP_EXPORT 54 SCIP_RETCODE SCIPincludeHeurCrossover( 55 SCIP* scip /**< SCIP data structure */ 56 ); 57 58 #ifdef __cplusplus 59 } 60 #endif 61 62 #endif 63