NLPMultiStart.h

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//
//     Minotaur -- It's only 1/2 bull
//
//     (C)opyright 2008 - 2025 The Minotaur Team.
//
 
#ifndef MINOTAURNLPMULTISTART_H
#define MINOTAURNLPMULTISTART_H
 
#include "Heuristic.h"
#include "Types.h"
 
namespace Minotaur {
 
  class Engine;
  class Problem;
  
 
  struct MSHeurStats {
    UInt numNLPs;
    UInt numInfeas;
    UInt numImprove;
    UInt numBadstatus;
    double time;
    UInt iterations;
    double bestObjValue;
  };
 
 
  class NLPMultiStart : public Heuristic {
    
    public:
 
      NLPMultiStart(EnvPtr env, ProblemPtr p, EnginePtr e);
 
      ~NLPMultiStart(); 
 
      void solve(NodePtr node, RelaxationPtr rel, SolutionPoolPtr s_pool);
 
      // Write statistics to logger
      void writeStats(std::ostream &out) const;
 
      const static std::string me_; 
          
    private:
 
      double distBound_;
 
      EnginePtr e_;
   
      EnvPtr env_;
 
      LoggerPtr logger_;
     
      ProblemPtr p_;
 
      double *random_;
 
      MSHeurStats stats_;
 
      void constructInitial_(double* a, const double* b, double rho, UInt vars);
      
  };
 
  typedef NLPMultiStart* NLPMSPtr;
}
#endif