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authorHarpreet2016-09-03 00:34:27 +0530
committerHarpreet2016-09-03 00:34:27 +0530
commit4b64cf486f5c999fd8167758cae27839f3b50848 (patch)
treed9d06639fb7fa61aef59be0363655e4747105ec7 /newstructure/thirdparty/linux/include/coin/BonHeuristicDiveMIP.hpp
parentd19794fb80a271a4c885ed90f97cfc12baa012f2 (diff)
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Structure updated and intqpipopt files added
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+// Copyright (C) 2007, International Business Machines Corporation and others.
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// Authors :
+// Joao P. Goncalves, International Business Machines Corporation
+//
+// Date : November 12, 2007
+
+#ifndef BonHeuristicDiveMIP_HPP
+#define BonHeuristicDiveMIP_HPP
+#include "BonOsiTMINLPInterface.hpp"
+#include "BonBonminSetup.hpp"
+#include "CbcHeuristic.hpp"
+#include "CbcStrategy.hpp"
+namespace Bonmin
+{
+ class SubMipSolver;
+ class HeuristicDiveMIP : public CbcHeuristic
+ {
+ public:
+#if 0
+ /// Default constructor
+ HeuristicDiveMIP();
+#endif
+
+ /// Constructor with setup
+ HeuristicDiveMIP(BonminSetup * setup);
+
+ /// Copy constructor
+ HeuristicDiveMIP(const HeuristicDiveMIP &copy);
+
+ /// Destructor
+ ~HeuristicDiveMIP();
+
+ /// Assignment operator
+ HeuristicDiveMIP & operator=(const HeuristicDiveMIP & rhs);
+
+ /// Clone
+ virtual CbcHeuristic * clone() const = 0;
+
+ /// Initialize method
+ void Initialize(BonminSetup * setup);
+
+ /// Resets stuff if model changes
+ virtual void resetModel(CbcModel * model){
+ setModel(model);
+ }
+
+ /** Change setup used for heuristic.*/
+ virtual void setSetup(BonminSetup * setup){
+ setup_ = setup;
+ // Initialize(setup_->options());
+ }
+
+ /// Performs heuristic
+ virtual int solution(double &solutionValue, double *betterSolution);
+
+ /// sets internal variables
+ virtual void setInternalVariables(TMINLP2TNLP* minlp) = 0;
+
+ /// Selects the next variable to branch on
+ /** If bestColumn = -1, it means that no variable was found
+ */
+ virtual void selectVariableToBranch(TMINLP2TNLP* minlp,
+ const vector<int> & integerColumns,
+ const double* newSolution,
+ int& bestColumn,
+ int& bestRound) = 0;
+
+ protected:
+ /** Setup to use for local searches (will make copies).*/
+ BonminSetup * setup_;
+
+ private:
+ /// How often to do (code can change)
+ int howOften_;
+ /// A subsolver for MIP
+ SubMipSolver * mip_;
+
+ };
+}
+#endif