| 1 | /* ======================================================================== *\
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| 2 | !
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| 3 | ! *
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| 4 | ! * This file is part of MARS, the MAGIC Analysis and Reconstruction
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| 5 | ! * Software. It is distributed to you in the hope that it can be a useful
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| 6 | ! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
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| 7 | ! * It is distributed WITHOUT ANY WARRANTY.
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| 8 | ! *
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| 9 | ! * Permission to use, copy, modify and distribute this software and its
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| 10 | ! * documentation for any purpose is hereby granted without fee,
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| 11 | ! * provided that the above copyright notice appear in all copies and
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| 12 | ! * that both that copyright notice and this permission notice appear
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| 13 | ! * in supporting documentation. It is provided "as is" without express
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| 14 | ! * or implied warranty.
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| 15 | ! *
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| 16 | !
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| 17 | !
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| 18 | ! Author(s): Thomas Hengstebeck 2/2005 <mailto:hengsteb@physik.hu-berlin.de>
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| 19 | !
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| 20 | ! Copyright: MAGIC Software Development, 2000-2005
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| 21 | !
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| 22 | !
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| 23 | \* ======================================================================== */
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| 24 |
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| 25 | /////////////////////////////////////////////////////////////////////////////
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| 26 | //
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| 27 | // MRFEnergyEst
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| 28 | //
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| 29 | //
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| 30 | ////////////////////////////////////////////////////////////////////////////
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| 31 | #include "MRFEnergyEst.h"
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| 32 |
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| 33 | #include <TFile.h>
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| 34 | #include <TList.h>
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| 35 |
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| 36 | #include <TH1F.h>
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| 37 | #include <TH2F.h>
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| 38 | #include <TStyle.h>
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| 39 | #include <TCanvas.h>
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| 40 |
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| 41 | #include "MHMatrix.h"
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| 42 |
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| 43 | #include "MLog.h"
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| 44 | #include "MLogManip.h"
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| 45 |
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| 46 | #include "MParList.h"
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| 47 | #include "MTaskList.h"
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| 48 | #include "MEvtLoop.h"
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| 49 |
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| 50 | #include "MRanTree.h"
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| 51 | #include "MRanForest.h"
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| 52 | #include "MRanForestGrow.h"
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| 53 |
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| 54 | #include "MData.h"
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| 55 |
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| 56 | #include "TFile.h"
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| 57 | #include "TList.h"
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| 58 |
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| 59 | #include "TH1F.h"
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| 60 | #include "TH2F.h"
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| 61 | #include "TStyle.h"
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| 62 | #include "TCanvas.h"
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| 63 | #include "TMath.h"
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| 64 | #include "TVector.h"
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| 65 |
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| 66 | #include "MEnergyEst.h"
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| 67 |
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| 68 |
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| 69 | ClassImp(MRFEnergyEst);
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| 70 |
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| 71 | using namespace std;
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| 72 |
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| 73 | static const TString gsDefName = "MRFEnergyEst";
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| 74 | static const TString gsDefTitle = "RF for energy estimation";
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| 75 |
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| 76 | // --------------------------------------------------------------------------
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| 77 | //
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| 78 | //
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| 79 | MRFEnergyEst::MRFEnergyEst(const char *name, const char *title):fNumTrees(-1)
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| 80 | {
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| 81 | //
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| 82 | // set the name and title of this object
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| 83 | //
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| 84 | fName = name ? name : gsDefName.Data();
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| 85 | fTitle = title ? title : gsDefTitle.Data();
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| 86 | }
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| 87 |
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| 88 | // --------------------------------------------------------------------------
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| 89 | //
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| 90 | // Delete the data chains
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| 91 | //
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| 92 | MRFEnergyEst::~MRFEnergyEst()
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| 93 | {
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| 94 | // delete fData;
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| 95 | }
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| 96 |
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| 97 | // --------------------------------------------------------------------------
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| 98 | Int_t MRFEnergyEst::Train()
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| 99 | {
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| 100 | if(!fMatrixTrain)
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| 101 | {
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| 102 | *fLog << err << dbginf << "fMatrixTrain not found... aborting." << endl;
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| 103 | return kFALSE;
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| 104 | }
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| 105 |
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| 106 | if(!fMatrixTrain->GetColumns())
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| 107 | {
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| 108 | *fLog << err << dbginf << "fMatrixTrain does not contain rules... aborting." << endl;
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| 109 | return kFALSE;
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| 110 | }
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| 111 |
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| 112 | const Int_t ncols = (fMatrixTrain->GetM()).GetNcols();
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| 113 | const Int_t nrows = (fMatrixTrain->GetM()).GetNrows();
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| 114 |
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| 115 | cout<<"ncols="<<ncols<<" nrows="<<nrows<<endl<<flush;
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| 116 |
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| 117 | if(ncols<=0 || nrows <=0)
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| 118 | {
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| 119 | *fLog << err << dbginf << "No. of columns or no. of rows of fMatrixTrain equal 0 ... aborting." << endl;
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| 120 | return kFALSE;
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| 121 | }
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| 122 |
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| 123 | // rules (= combination of image par) to be used for energy estimation
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| 124 | MDataArray used_rules;
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| 125 | TString energy_rule;
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| 126 | for(Int_t i=0;i<ncols;i++)
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| 127 | {
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| 128 | MDataArray *rules=fMatrixTrain->GetColumns();
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| 129 | MData &data=(*rules)[i];
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| 130 |
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| 131 | if(i<ncols-1)
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| 132 | used_rules.AddEntry(data.GetRule());
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| 133 | else
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| 134 | energy_rule=data.GetRule();
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| 135 | }
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| 136 |
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| 137 | if(!energy_rule.Contains("fEnergy"))
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| 138 | {
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| 139 | *fLog << err << dbginf << "Can not accept "<<energy_rule<<" as true energy ... aborting." << endl;
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| 140 | return kFALSE;
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| 141 | }
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| 142 |
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| 143 | TFile fileRF(fRFfileName,"recreate");
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| 144 | if(!fileRF.IsOpen())
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| 145 | {
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| 146 | *fLog << err << dbginf << "File to store RFs could not be opened... aborting." << endl;
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| 147 | return kFALSE;
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| 148 | }
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| 149 |
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| 150 | TMatrix *mptr=(TMatrix*)&(fMatrixTrain->GetM());
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| 151 | const Int_t nbins = fEnergyGrid.GetSize()-1;
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| 152 | if(nbins<=0)
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| 153 | {
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| 154 | *fLog << err << dbginf << "Energy grid not vaild... aborting." << endl;
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| 155 | return kFALSE;
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| 156 | }
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| 157 |
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| 158 | // training of RF for each energy bin
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| 159 | Int_t numbins=0;
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| 160 | for(Int_t ie=0;ie<nbins;ie++)
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| 161 | {
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| 162 | TMatrix mat1(nrows,ncols);
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| 163 | TMatrix mat0(nrows,ncols);
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| 164 |
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| 165 | // prepare matrix for current energy bin
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| 166 | Int_t irow1=0;
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| 167 | Int_t irow0=0;
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| 168 |
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| 169 | for(Int_t j=0;j<nrows;j++)
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| 170 | {
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| 171 | Double_t energy=(*mptr)(j,ncols-1);
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| 172 | if(energy>pow(10.,fEnergyGrid[ie]) && energy<=pow(10.,fEnergyGrid[ie+1]))
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| 173 | {
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| 174 | TMatrixRow(mat1, irow1) = TMatrixRow(*mptr,j);
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| 175 | irow1++;
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| 176 | }else{
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| 177 | TMatrixRow(mat0, irow0) = TMatrixRow(*mptr,j);
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| 178 | irow0++;
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| 179 | }
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| 180 | }
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| 181 | if(irow1*irow0==0)continue;
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| 182 |
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| 183 | *fLog << inf << dbginf << "Training RF for energy bin "<<ie<< endl;
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| 184 |
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| 185 | // last column must be removed (true energy col.)
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| 186 | mat1.ResizeTo(irow1,ncols-1);
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| 187 | mat0.ResizeTo(irow0,ncols-1);
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| 188 |
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| 189 | // create MHMatrix as input for RF
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| 190 | MHMatrix matrix1(mat1,"MatrixHadrons");
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| 191 | MHMatrix matrix0(mat0,"MatrixGammas");
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| 192 |
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| 193 | MDataArray *rules1=matrix1.GetColumns();
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| 194 | MDataArray *rules0=matrix0.GetColumns();
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| 195 | // rules of new matrices be re-set
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| 196 | if(rules1)delete rules1; rules1=new MDataArray();
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| 197 | if(rules0)delete rules0; rules0=new MDataArray();
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| 198 |
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| 199 | for(Int_t i=0;i<ncols-1;i++)
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| 200 | {
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| 201 | //MDataArray *rules=fMatrixTrain->GetColumns();
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| 202 | //MData &data=(*rules)[i];
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| 203 | MData &data=used_rules[i];
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| 204 | rules1->AddEntry(data.GetRule());
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| 205 | rules0->AddEntry(data.GetRule());
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| 206 | }
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| 207 |
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| 208 | // training of RF
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| 209 | MParList plist;
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| 210 | MTaskList tlist;
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| 211 | plist.AddToList(&tlist);
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| 212 | plist.AddToList(&matrix0);
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| 213 | plist.AddToList(&matrix1);
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| 214 |
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| 215 | MRanForestGrow rfgrow;
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| 216 | rfgrow.SetNumTrees(fNumTrees); // number of trees
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| 217 | rfgrow.SetNumTry(fNumTry); // number of trials in random split selection
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| 218 | rfgrow.SetNdSize(fNdSize); // limit for nodesize
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| 219 |
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| 220 | tlist.AddToList(&rfgrow);
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| 221 |
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| 222 | MEvtLoop evtloop;
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| 223 | evtloop.SetParList(&plist);
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| 224 |
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| 225 | //gLog.SetNullOutput(kTRUE);
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| 226 |
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| 227 | if (!evtloop.Eventloop()) return kFALSE;
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| 228 |
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| 229 | //gLog.SetNullOutput(kFALSE);
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| 230 |
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| 231 | // save whole forest
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| 232 | MRanForest *forest=(MRanForest*)plist.FindObject("MRanForest");
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| 233 | forest->SetTitle(Form("%f",0.5*(fEnergyGrid[ie]+fEnergyGrid[ie+1])));
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| 234 | forest->Write(Form("%d",numbins));
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| 235 | numbins++;
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| 236 | }
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| 237 |
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| 238 | // save rules
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| 239 | used_rules.Write("rules");
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| 240 |
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| 241 | fileRF.Close();
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| 242 |
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| 243 | return kTRUE;
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| 244 | }
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| 245 |
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| 246 | Int_t MRFEnergyEst::Test()
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| 247 | {
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| 248 | if(!fMatrixTest)
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| 249 | {
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| 250 | *fLog << err << dbginf << "fMatrixTest not found... aborting." << endl;
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| 251 | return kFALSE;
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| 252 | }
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| 253 |
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| 254 | const Int_t ncols = (fMatrixTest->GetM()).GetNcols();
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| 255 | const Int_t nrows = (fMatrixTest->GetM()).GetNrows();
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| 256 |
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| 257 | if(ncols<=0 || nrows <=0)
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| 258 | {
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| 259 | *fLog << err << dbginf << "No. of columns or no. of rows of fMatrixTrain equal 0 ... aborting." << endl;
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| 260 | return kFALSE;
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| 261 | }
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| 262 |
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| 263 | TMatrix *mptr=(TMatrix*)&(fMatrixTest->GetM());
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| 264 |
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| 265 | if(!ReadForests())
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| 266 | {
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| 267 | *fLog << err << dbginf << "Reading RFs failed... aborting." << endl;
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| 268 | return kFALSE;
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| 269 | }
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| 270 |
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| 271 | const Int_t nbins=fEForests.GetSize();
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| 272 |
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| 273 | Double_t e_low = 100;
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| 274 | Double_t e_up = 0;
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| 275 |
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| 276 | for(Int_t j=0;j<nbins;j++)
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| 277 | {
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| 278 | e_low = TMath::Min(atof((fEForests[j])->GetTitle()),e_low);
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| 279 | e_up = TMath::Max(atof((fEForests[j])->GetTitle()),e_up);
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| 280 | }
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| 281 |
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| 282 | TH1F hres("hres","",1000,-10,10);
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| 283 | TH2F henergy("henergy","",100,e_low,e_up,100,e_low,e_up);
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| 284 |
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| 285 | for(Int_t i=0;i<nrows;i++)
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| 286 | {
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| 287 | Double_t e_true = (*mptr)(i,ncols-1);
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| 288 | Double_t e_est = 0;
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| 289 | Double_t hmax = 0;
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| 290 | Double_t hsum = 0;
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| 291 |
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| 292 | for(Int_t j=0;j<nbins;j++)
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| 293 | {
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| 294 | const TVector v=TMatrixRow(*mptr,i);
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| 295 | Double_t h = ((MRanForest*) (fEForests[j]))->CalcHadroness(v);
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| 296 | Double_t e = atof((fEForests[j])->GetTitle());
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| 297 | /*if(h>=hmax)
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| 298 | {
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| 299 | hmax=h;
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| 300 | e_est=pow(10.,e);
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| 301 | }*/
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| 302 | hsum+=h;
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| 303 | e_est+=h*e;
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| 304 | }
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| 305 | e_est/=hsum;
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| 306 | e_est=pow(10.,e_est);
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| 307 |
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| 308 | if(e_true>80.) hres.Fill((e_est-e_true)/e_true);
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| 309 | henergy.Fill(log10(e_true),log10(e_est));
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| 310 | }
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| 311 |
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| 312 | if(TestBit(kEnableGraphicalOutput))
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| 313 | {
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| 314 | if(gStyle) gStyle->SetOptFit(1);
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| 315 | // show results
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| 316 | TCanvas *c=MH::MakeDefCanvas("c","",300,900);
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| 317 |
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| 318 | c->Divide(1,3);
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| 319 | c->cd(1);
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| 320 | henergy.SetTitle("Estimated vs true energy");
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| 321 | henergy.GetXaxis()->SetTitle("log10(E_{true}[GeV])");
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| 322 | henergy.GetYaxis()->SetTitle("log10(E_{est}[GeV])");
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| 323 | henergy.DrawCopy();
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| 324 |
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| 325 | c->cd(2);
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| 326 |
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| 327 | TH1F *hptr=(TH1F*)henergy.ProfileX("_px",1,100,"S");
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| 328 | hptr->SetTitle("Estimated vs true energy - profile");
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| 329 | hptr->GetXaxis()->SetTitle("log10(E_{true}[GeV])");
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| 330 | hptr->GetYaxis()->SetTitle("log10(E_{est}[GeV])");
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| 331 | hptr->DrawCopy();
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| 332 |
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| 333 | c->cd(3);
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| 334 | hres.Fit("gaus");
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| 335 | hres.SetTitle("Energy resolution for E_{true}>80Gev");
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| 336 | hres.GetXaxis()->SetTitle("(E_{estimated}-E_{true})/E_{true})");
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| 337 | hres.GetYaxis()->SetTitle("counts");
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| 338 | hres.DrawCopy();
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| 339 |
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| 340 |
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| 341 | c->GetPad(1)->SetGrid();
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| 342 | c->GetPad(2)->SetGrid();
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| 343 | c->GetPad(3)->SetGrid();
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| 344 |
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| 345 | }
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| 346 |
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| 347 | return kTRUE;
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| 348 | }
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| 349 |
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| 350 | Int_t MRFEnergyEst::ReadForests(MParList *plist)
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| 351 | {
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| 352 | TFile fileRF(fRFfileName,"read");
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| 353 | if(!fileRF.IsOpen())
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| 354 | {
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| 355 | *fLog << err << dbginf << "File containing RFs could not be opened... aborting." << endl;
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| 356 | return kFALSE;
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| 357 | }
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| 358 |
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| 359 | TList *list=(TList*)fileRF.GetListOfKeys();
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| 360 | const Int_t n=list->GetSize()-1;// subtract 1 since 1 key belongs to MDataArray
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| 361 |
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| 362 | fEForests.Expand(n);
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| 363 |
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| 364 | MRanForest forest;
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| 365 | for(Int_t i=0;i<n;i++)
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| 366 | {
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| 367 | forest.Read(Form("%d",i));
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| 368 | MRanForest *curforest=(MRanForest*)forest.Clone();
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| 369 | const char *energy=list->FindObject(Form("%d",i))->GetTitle();
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| 370 | const char *bin =list->FindObject(Form("%d",i))->GetName();
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| 371 |
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| 372 | curforest->SetTitle(energy);
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| 373 | curforest->SetName(bin);
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| 374 |
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| 375 | fEForests[i]=curforest;
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| 376 | }
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| 377 |
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| 378 | if(plist)
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| 379 | {
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| 380 | fData=(MDataArray*)plist->FindCreateObj("MDataArray");
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| 381 | fData->Read("rules");
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| 382 | }
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| 383 | fileRF.Close();
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| 384 |
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| 385 | return kTRUE;
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| 386 | }
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| 387 |
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| 388 | Int_t MRFEnergyEst::PreProcess(MParList *plist)
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| 389 | {
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| 390 | fEnergyEst = (MEnergyEst*)plist->FindCreateObj("MEnergyEst");
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| 391 | if (!fEnergyEst)
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| 392 | {
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| 393 | *fLog << err << dbginf << "MEnergyEst not found... aborting." << endl;
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| 394 | return kFALSE;
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| 395 | }
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| 396 |
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| 397 | if(!ReadForests(plist))
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| 398 | {
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| 399 | *fLog << err << dbginf << "Reading RFs failed... aborting." << endl;
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| 400 | return kFALSE;
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| 401 | }
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| 402 |
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| 403 | if (!fData)
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| 404 | {
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| 405 | *fLog << err << dbginf << "MDataArray not found... aborting." << endl;
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| 406 | return kFALSE;
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| 407 | }
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| 408 |
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| 409 | if (!fData->PreProcess(plist))
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| 410 | {
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| 411 | *fLog << err << dbginf << "PreProcessing of the MDataArray failed for the columns failed... aborting." << endl;
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| 412 | return kFALSE;
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| 413 | }
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| 414 |
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| 415 | return kTRUE;
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| 416 | }
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| 417 |
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| 418 | // --------------------------------------------------------------------------
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| 419 | //
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| 420 | //
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| 421 | Int_t MRFEnergyEst::Process()
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| 422 | {
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| 423 | TVector event;
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| 424 | *fData >> event;
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| 425 |
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| 426 | Double_t e_est = 0;
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| 427 | Double_t hmax = 0;
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| 428 | Double_t hsum = 0;
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| 429 |
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| 430 | for(Int_t j=0;j<fEForests.GetSize();j++)
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| 431 | {
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| 432 | Double_t h = ((MRanForest*) (fEForests[j]))->CalcHadroness(event);
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| 433 | Double_t e = atof((fEForests[j])->GetTitle());
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| 434 | /*if(h>=hmax)
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| 435 | {
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| 436 | hmax=h;
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| 437 | e_est=pow(10.,e);
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| 438 | }*/
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| 439 | hsum+=h;
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| 440 | e_est+=h*e;
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| 441 | }
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| 442 | e_est/=hsum;
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| 443 | e_est=pow(10.,e_est);
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| 444 |
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| 445 | fEnergyEst->SetEnergy(e_est);
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| 446 | fEnergyEst->SetReadyToSave();
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| 447 |
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| 448 | return kTRUE;
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| 449 | }
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| 450 |
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| 451 | Int_t MRFEnergyEst::PostProcess()
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| 452 | {
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| 453 |
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| 454 | return kTRUE;
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| 455 | }
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