Training/training/vtxPredictionTraining.C

0001 #include <TFile.h>
0002 #include <TTree.h>
0003 #include <TString.h>
0004 #include <TChain.h>
0005
0006
0007 #if not defined(__CINT__) || defined(__MAKECINT__)
0008 // needs to be included when makecint runs (ACLIC)
0009 #include "TMVA/Factory.h"
0010 #include "TMVA/Tools.h"
0011 #endif
0012
0013
0014
0015 TChain* handleFile(string name, string extension, string treename, int filecount){
0016   TChain *all = new TChain(treename.c_str());
0017   string temp;
0018   for (int i = 0; i < filecount; ++i)
0019   {
0020
0021     ostringstream s;
0022     s<<i;
0023     temp = name+string(s.str())+extension;
0024     all->Add(temp.c_str());
0025   }
0026   return all;
0027 }
0028
0029
0030 void makeFactory(TTree* signalTree,std::string outfile,std::string factoryname)
0031 {
0032   using namespace TMVA;
0033   TString jobname(factoryname.c_str());
0034   TFile *targetFile = new TFile(outfile.c_str(),"RECREATE");
0035   Factory *factory = new Factory(jobname,targetFile,"AnalysisType=Regression");
0036   factory->AddRegressionTree(signalTree,1.0);
0037   factory->AddVariable("track1_pt",'F');
0038   factory->AddVariable("track2_pt",'F');
0039   factory->AddVariable("track1_phi",'F');
0040   factory->AddVariable("track1_phi-track2_phi","d#phi","rad");
0041   factory->AddVariable("track1_eta",'F');
0042   factory->AddVariable("track1_eta-track2_eta","d#eta","rad");
0043   factory->AddVariable("vtx_radius","radius","[cm]");
0044   factory->AddTarget("tvtx_radius","radius","[cm]");
0045
0046   string track_pT_cut = "";
0047
0048   //string vtx_radius_cut = "vtx_radius>0"; //can I cut based on label?
0049   string tCutInitializer = track_pT_cut;
0050   TCut preTraingCuts(tCutInitializer.c_str());
0051   factory->PrepareTrainingAndTestTree(preTraingCuts,"nTrain_Regression=0:nTest_Regression=0");
0052   factory->BookMethod(Types::kMLP,"MLP_ANN","HiddenLayers=2000");
0053   factory->BookMethod(Types::kMLP,"MLP_ANN2","HiddenLayers=500,6");
0054
0055
0056   factory->TrainAllMethods();
0057   factory->TestAllMethods();
0058   factory->EvaluateAllMethods();
0059   targetFile->Write();
0060   targetFile->Close();
0061 }
0062
0063
0064 int vtxPredictionTraining(){
0065   using namespace std;
0066   string treePath = "/sphenix/user/vassalli/gammasample/conversiononlineanalysis";
0067   string treeExtension = ".root";
0068   string outname = "vtxTrain.root";
0069   unsigned int nFiles=200;
0070
0071   TChain *signalTree = handleFile(treePath,treeExtension,"vtxingTree",nFiles);
0072   makeFactory(signalTree,outname,"vtxFactory");
0073 /*  outname="cutTrainE.root";
0074   makeFactory(signalTree,backETree,outname,"eback");*/
0075 }