Calibration/Tools/interface/GenericMinL3Algorithm.h - master - githubmirror/cmssw

Calibration/Tools/interface/GenericMinL3Algorithm.h

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16 май 2019, 15:48

16 май 2019, 15:4899a83f0

#ifndef GenericMinL3Algorithm_H
#define GenericMinL3Algorithm_H

/** \class GenericMinL3Algorithm
 *  Implementation of the L3 Collaboration algorithm to solve a system Ax = B
 *  by minimization of |Ax-B| using an iterative linear approach
 *
 * \author R.Ofierzynski, CERN
 */

#include <vector>
#include <iostream>

class GenericMinL3Algorithm {
public:
  /// Default constructor
  /// CAVEAT: use normalise = true only if you know what you're doing!
  GenericMinL3Algorithm(bool normalise = false);

  /// Destructor
  ~GenericMinL3Algorithm();

  /// run the Minimization L3 Algorithm "nIter" number of times, recalibrating the event matrix after each iteration with the new solution
  /// returns the vector of calibration coefficients built from all iteration solutions
  std::vector<float> iterate(const std::vector<std::vector<float> >& eventMatrix,
                             const std::vector<float>& energyVector,
                             int nIter);

  /// perform one iteration using the Minimization L3 Algorithm
  /// returns the vector of calibration coefficients
  std::vector<float> iterate(const std::vector<std::vector<float> >& eventMatrix,
                             const std::vector<float>& energyVector);

protected:
private:
  bool normaliseFlag;
};

#endif  // GenericMinL3Algorithm_H