/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/ReweightUtils/ReweightUtils/APWeightSumEnsemble.h

#ifndef APWeightSumEnsemble_h
#define APWeightSumEnsemble_h

#include "APWeightSum.h"
#include <vector>

class TH1F;
class TVirtualFitter;
class APWeightEntry;

class APWeightSumEnsemble : public APWeightSum {
  
public:
  APWeightSumEnsemble();                                                         
  virtual ~APWeightSumEnsemble();                                                
  void SetRelPrecision(double rel_prec);                                         
  void AddWeightToEvt(APWeightEntry* weight);                                    
  void FinishEvt(double ext_weight = 1.0);                                       
  double GetQuantile(const double prob);                                         
  double GetRandom();                                                            
  double GetEnsemblePDFMode();                                                   
  double GetEnsemblePDFStdDev();                                                 
  TH1F *GetPDF();                                                                
  //ClassDef(APWeightSumEnsemble,1)

private:
  void Compute();                                                                
  std::vector< std::vector< APWeightEntry* > > _weight_vector;                   
  std::vector< APWeightEntry* > _current_evt_pdfs;                               
  std::vector< double > _ext_weights;                                            
  double _rel_prec;                                                              
  TH1F *_pdf;                                                                    
  double _ensemble_mode;                                                         
  double _ensemble_sigma;                                                        
  bool _ensembleTest_done;                                                       
};

#endif

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