00001 // @(#)root/tmva $Id: GeneticRange.h 29122 2009-06-22 06:51:30Z brun $ 00002 // Author: Peter Speckmayer 00003 00004 /********************************************************************************** 00005 * Project: TMVA - a Root-integrated toolkit for multivariate data analysis * 00006 * Package: TMVA * 00007 * Class : GeneticRange * 00008 * Web : http://tmva.sourceforge.net * 00009 * * 00010 * Description: * 00011 * Range definition for genetic algorithm * 00012 * * 00013 * Authors (alphabetical): * 00014 * Peter Speckmayer <speckmay@mail.cern.ch> - CERN, Switzerland * 00015 * * 00016 * Copyright (c) 2005: * 00017 * CERN, Switzerland * 00018 * MPI-K Heidelberg, Germany * 00019 * * 00020 * Redistribution and use in source and binary forms, with or without * 00021 * modification, are permitted according to the terms listed in LICENSE * 00022 * (http://tmva.sourceforge.net/LICENSE) * 00023 **********************************************************************************/ 00024 00025 #ifndef ROOT_TMVA_GeneticRange 00026 #define ROOT_TMVA_GeneticRange 00027 00028 ////////////////////////////////////////////////////////////////////////// 00029 // // 00030 // GeneticRange // 00031 // // 00032 // Range definition for genetic algorithm // 00033 // // 00034 ////////////////////////////////////////////////////////////////////////// 00035 00036 #ifndef ROOT_TMVA_Interval 00037 #include "TMVA/Interval.h" 00038 #endif 00039 00040 class TRandom3; 00041 00042 namespace TMVA { 00043 00044 class GeneticRange { 00045 00046 public: 00047 00048 GeneticRange( TRandom3* rnd, Interval *interval ); 00049 virtual ~GeneticRange(); 00050 00051 Double_t Random( Bool_t near = kFALSE, Double_t value=0, Double_t spread=0.1, Bool_t mirror=kFALSE ); 00052 Double_t RandomDiscrete(); 00053 00054 Double_t GetFrom() { return fFrom; } 00055 Double_t GetTo() { return fTo; } 00056 Double_t GetTotalLength() { return fTotalLength; } 00057 00058 private: 00059 00060 Double_t fFrom, fTo; // the constraints of the coefficient 00061 Int_t fNbins; 00062 00063 Interval *fInterval; // holds the complete information of the interval 00064 Double_t fTotalLength; // the distance between the lower and upper constraints 00065 00066 // maps the values thrown outside of the ]from,to] interval back to the interval 00067 // the values which leave the range on the from-side, are mapped in to the to-side 00068 Double_t ReMap( Double_t val ); 00069 00070 // same as before, but the values leaving the allowed range, are mirrored into the range. 00071 Double_t ReMapMirror( Double_t val ); 00072 00073 TRandom3* fRandomGenerator; // the randomGenerator for calculating the new values 00074 00075 ClassDef(GeneticRange,0) // Range definition for genetic algorithm 00076 }; 00077 00078 } // namespace TMVA 00079 00080 #endif
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