library: libTMVA
#include "GeneticRange.h"

TMVA::GeneticRange

class description - header file - source file - inheritance tree (.pdf)

class TMVA::GeneticRange

Inheritance Chart:

TMVA::GeneticRange

    private:

      Double_t ReMap(Double_t val)
      Double_t ReMapMirror(Double_t val)

    public:

                          GeneticRange(TRandom* rnd, Double_t f, Double_t t)
                          GeneticRange(const TMVA::GeneticRange&)
                  virtual ~GeneticRange()
           static TClass* Class()
                 Double_t GetFrom()
                 Double_t GetTo()
                 Double_t GetTotalLength()
          virtual TClass* IsA() const
      TMVA::GeneticRange& operator=(const TMVA::GeneticRange&)
                 Double_t Random(Bool_t near = kFALSE, Double_t value = 0, Double_t spread = 0.1, Bool_t mirror = kFALSE)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)

Data Members

    private:

      Double_t fFrom             
      Double_t fTo               the constraints of the coefficient
      Double_t fTotalLength      the distance between the lower and upper constraints
      TRandom* fRandomGenerator  the randomGenerator for calculating the new values

Class Description

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 Range definition for genetic algorithm

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GeneticRange( TRandom *rnd, Double_t f, Double_t t )

 defines the "f" (from) and "t" (to) of the coefficient
 and takes a randomgenerator

Double_t Random( Bool_t near, Double_t value, Double_t spread, Bool_t mirror )

 creates a new random value for the coefficient
 Parameters:
        bool near : takes a random value near the current value
        double value : this is the current value
        double spread : the sigma of the gaussian which is taken to calculate the new value
        bool mirror : if the new value would be outside of the range, mirror = false
               maps the value between the constraints by periodic boundary conditions.
               With mirror = true, the value gets "reflected" on the boundaries.

Double_t ReMap( Double_t val )

 remapping the value to the allowed space

Double_t ReMapMirror( Double_t val )

 remapping the value to the allowed space by reflecting on the
 boundaries

~GeneticRange()

 destructor

GeneticRange( TRandom *rnd, Double_t f, Double_t t )

Double_t GetFrom()

Double_t GetTo()

Double_t GetTotalLength()

Author: Peter Speckmayer
Last update: root/tmva $Id: GeneticRange.cxx,v 1.4 2006/05/31 14:01:33 rdm Exp $
Copyright (c) 2005: *

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