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 branch_inference.h 26 * @ingroup BRANCHINGRULES 27 * @brief inference history branching rule 28 * @author Tobias Achterberg 29 * @author Timo Berthold 30 * @author Stefan Heinz 31 * 32 * The inference history branching rule is based on the average number of deductions obtained after 33 * branching this variable upwards and downwards. 34 * Variables which cause many problem reductions are preferred since they are more likely to drive 35 * the created sub-tree towards infeasibility. 36 * Inference history of the variables is updated during the branch-and-bound search. 37 * 38 * For a more detailed description and a comparison between the inference rule and other branching rules 39 * in SCIP, we refer to 40 * 41 * @par 42 * Tobias Achterberg@n 43 * Constraint Integer Programming@n 44 * PhD Thesis, Technische Universität Berlin, 2007@n 45 * 46 47 */ 48 49 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 50 51 #ifndef __SCIP_BRANCH_INFERENCE_H__ 52 #define __SCIP_BRANCH_INFERENCE_H__ 53 54 55 #include "scip/def.h" 56 #include "scip/type_retcode.h" 57 #include "scip/type_scip.h" 58 59 #ifdef __cplusplus 60 extern "C" { 61 #endif 62 63 /** creates the inference history branching rule and includes it in SCIP 64 * 65 * @ingroup BranchingRuleIncludes 66 */ 67 SCIP_EXPORT 68 SCIP_RETCODE SCIPincludeBranchruleInference( 69 SCIP* scip /**< SCIP data structure */ 70 ); 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 #endif 77