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+// $Id: CbcHeuristicDINS.hpp 1899 2013-04-09 18:12:08Z stefan $
+// Copyright (C) 2006, International Business Machines
+// Corporation and others. All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+// edwin 12/5/09 carved out of CbcHeuristicRINS
+
+#ifndef CbcHeuristicDINS_H
+#define CbcHeuristicDINS_H
+
+#include "CbcHeuristic.hpp"
+
+
+class CbcHeuristicDINS : public CbcHeuristic {
+public:
+
+ // Default Constructor
+ CbcHeuristicDINS ();
+
+ /* Constructor with model - assumed before cuts
+ Initial version does not do Lps
+ */
+ CbcHeuristicDINS (CbcModel & model);
+
+ // Copy constructor
+ CbcHeuristicDINS ( const CbcHeuristicDINS &);
+
+ // Destructor
+ ~CbcHeuristicDINS ();
+
+ /// Clone
+ virtual CbcHeuristic * clone() const;
+
+
+ /// Assignment operator
+ CbcHeuristicDINS & operator=(const CbcHeuristicDINS& rhs);
+
+ /// Create C++ lines to get to current state
+ virtual void generateCpp( FILE * fp) ;
+
+ /// Resets stuff if model changes
+ virtual void resetModel(CbcModel * model);
+
+ /// update model (This is needed if cliques update matrix etc)
+ virtual void setModel(CbcModel * model);
+
+ using CbcHeuristic::solution ;
+ /** returns 0 if no solution, 1 if valid solution.
+ Sets solution values if good, sets objective value (only if good)
+ This does Relaxation Induced Neighborhood Search
+ */
+ virtual int solution(double & objectiveValue,
+ double * newSolution);
+ /// This version fixes stuff and does IP
+ int solutionFix(double & objectiveValue,
+ double * newSolution,
+ const int * keep);
+
+ /// Sets how often to do it
+ inline void setHowOften(int value) {
+ howOften_ = value;
+ }
+ /// Sets maximum number of solutions kept
+ inline void setMaximumKeep(int value) {
+ maximumKeepSolutions_ = value;
+ }
+ /// Sets tightness of extra constraint
+ inline void setConstraint(int value) {
+ localSpace_ = value;
+ }
+
+protected:
+ // Data
+
+ /// Number of solutions so we can do something at solution
+ int numberSolutions_;
+ /// How often to do (code can change)
+ int howOften_;
+ /// Number of successes
+ int numberSuccesses_;
+ /// Number of tries
+ int numberTries_;
+ /// Maximum number of solutions to keep
+ int maximumKeepSolutions_;
+ /// Number of solutions kept
+ int numberKeptSolutions_;
+ /// Number of integer variables
+ int numberIntegers_;
+ /// Local parameter
+ int localSpace_;
+ /// Values of integer variables
+ int ** values_;
+};
+
+#endif
+