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#include "ikstest.h"
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#include "TopStyle/CMSTopStyle.cc"
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//=================================
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// Program to run IKS test
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// * Input directories:
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// * Data: skimmed_Data_x.xxpb-1
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// => default selection : Data_<suffix>.root
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// => n-1 selection : Data_<suffix>_<invName>.root
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// * MC : skimmed_MC {QCD,WJets,TTbar...}
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// => default selection : QCD_<suffix>.root
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// => n-1 selection : Data_<suffix>_<invName>.root
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// * Upmost output dir specified by <desDir>
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// subdirectory created according to <useInv> and <realData>
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// => <desDir'><xyz><suffix>.pdf (.txt)
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// * e.g. to do KS test on data with MC QCD shape in signal region:
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// useInv=false; realData=true
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//=================================
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using namespace std;
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//define the constants: 2.88/pb
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const double weight_[3] = {0.0524313, //QCD
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0.0091395, //WJets
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0.000306 //TTbar
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};
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const Double_t procQCD = 1.46;
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const Double_t procWjets = 1.03;
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const Double_t procttjets = 1.0;
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// Output directory
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TString baseDir = "Results_2.88pb-1/";
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// User defined parameters
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bool useInv = true; // whether to use n-1 QCD template
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bool realData = false;
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// Ntuples to use
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TString suffix = "Sel4"; // Suffix of selection
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TString invNames[2] = {"RelIsogt0p1","D0gt0p02"};
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map<TString,TCanvas*> cvs; // map of usual histogram
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//=================================
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// Main program
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//=================================
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void ikstest() {
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CMSTopStyle style;
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gROOT->SetStyle("CMS");
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TLatex *latex = new TLatex();
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latex->SetNDC();
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int size_ninv = (useInv ? 2 : 1);
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for (int ninv = 0;ninv < size_ninv; ++ninv) {
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TString invName = invNames[ninv];
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TString desDir;
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if (!useInv) {
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if (!realData) desDir = baseDir + "MC/";
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else desDir = baseDir + "Data_MC/";
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} else {
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if (!realData) desDir = baseDir + "MC_"+invName+"/";
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else desDir = baseDir + "Data_"+invName+"/";
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}
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struct stat stDir;
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if (!stat(desDir,&stDir)){
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cout << "Output folder exists! Continues? (enter to continue; 'q' for quit)" << endl;
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char incmd;
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cin.get(incmd);
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if (incmd == 'q') return;
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} else {
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cout << "Creating folder : " << desDir << endl;
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if (mkdir(desDir,0755) == -1){
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std::cerr << "Error creating folder" << endl;
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return;
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}
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}
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ofstream outprint(TString(desDir+"Results_"+suffix+".txt"));
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//open the files with histograms
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map<string,TFile*> mfile;
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mfile["Data"] = TFile::Open(TString("skimmed_Data_2.88pb-1/Data_"+suffix+".root"));
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// n-1 cuts
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if (useInv) {
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if (realData)
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mfile["InvSel"] = TFile::Open(TString("skimmed_Data_2.88pb-1/Data_"+suffix+"_"+invName+".root"));
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else
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mfile["InvSel"] = TFile::Open(TString("skimmed_MC/v5/QCD_"+suffix+"_"+invName+".root"));
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}
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// RefSel MC
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mfile["0"] = TFile::Open(TString("skimmed_MC/v5/QCD_"+suffix+".root"));
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mfile["1"] = TFile::Open(TString("skimmed_MC/v5/WJets_"+suffix+".root"));
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mfile["2"] = TFile::Open(TString("skimmed_MC/v5/TTbar_"+suffix+".root"));
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//define histograms and related parameters
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string histoName[3] = {"h_mu_pt_calo","h_met_calo","h_mt_calo"};
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string histoLabelX[3] = {"p_{T}^{#mu} [GeV/c]", "#slash{E}_{T} [GeV/c]", "M_{T}^{W} [GeV/c^{2}]"};
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Int_t xbins[3] = {20,20,40};
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Double_t xlow[3] = {0.,0.,0.};
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Double_t xhigh[3] = {100.,100.,200.};
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string sample[3] = {"QCD","Wjets","ttjets"};
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TH1F* h_[9];
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TH1F* mixh_[3];
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TH1F* hQCD_NEW[3];
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TH1F* hKSres_[3];
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TH1F* hKSvalues_[3];
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TH1F* hQCD_KS[3];
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TH1F* hWJets_KS[3];
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//load the histograms from the root files
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for (int i = 0; i < 3; i++) {// 3 variables
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//cout << "file[" << i << "] : " << endl;
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string nameNewHisto = "mix_"+histoName[i];
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string nameNewHistoSFKS = "finalSF_"+histoName[i];
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string nameNewHistoKSvalues = "KSvalues_"+histoLabelX[i];
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mixh_[i] = new TH1F(nameNewHisto.c_str(),"",xbins[i],xlow[i],xhigh[i]);
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hKSres_[i] = new TH1F(nameNewHistoSFKS.c_str(),"",xbins[i],xlow[i],xhigh[i]);
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hKSvalues_[i] = new TH1F(nameNewHistoKSvalues.c_str(),"",2./stepsize, stepsize, 2.+stepsize);
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if (!useInv) {//use QCD MC sample
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hQCD_NEW[i] = (TH1F*) mfile["0"]->Get(TString(histoName[i]))->Clone();
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hQCD_NEW[i] -> Scale(weight_[0]);
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hQCD_NEW[i] -> SetName((histoName[i]).c_str());
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}
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else {
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hQCD_NEW[i] = (TH1F*) mfile["InvSel"]->Get(TString(histoName[i]));
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if (!realData) hQCD_NEW[i] -> Scale(weight_[0]);
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hQCD_NEW[i] -> SetName((histoName[i]).c_str());
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}
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mixh_[i] -> Sumw2();
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hKSres_[i] -> Sumw2();
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hKSvalues_[i] -> Sumw2();
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}
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for (int n = 0; n < 3; ++n) {// 3 MC samples
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for (int ihisto = 0; ihisto < 3; ihisto++) {// 3 variables
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//cout << "Variable[" << ihisto << "]" << endl;
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string histo_name = histoName[ihisto]+sample[n];
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ostringstream ss;
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ss << n;
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h_[n*3+ihisto] = (TH1F*) mfile[ss.str()]->Get(TString(histoName[ihisto]))->Clone();
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h_[n*3+ihisto] -> Scale(weight_[n]);
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h_[n*3+ihisto] -> SetName(histo_name.c_str());
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}
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}
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//create the mixed samples = "data"
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TString cvsName0 = "Data";
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if (useInv) {
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cvsName0 += "_";
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cvsName0 += invName;
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}
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cvs[cvsName0] = new TCanvas(cvsName0,"Data distributions",600,700);
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cvs[cvsName0]->Divide(3,1);
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for (int i = 0; i < 3; i++) {
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cvs[cvsName0]->cd(i+1);
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if (!realData) {
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mixh_[i] -> Add(h_[i],h_[i+3], procQCD,procWjets);
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//mixh_[i] -> Add(mixh_[i],h_[i+6], 1,procttjets);
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//cout << "histo_name: " << mixh_[0]->GetNbinsX() << endl;
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}
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else {
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TH1F *htmp = (TH1F*) mfile["Data"]->Get(TString(histoName[i]));
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mixh_[i] -> Add(htmp,1.);
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}
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mixh_[i]->GetXaxis()->SetTitle(histoLabelX[i].c_str());
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mixh_[i]->GetYaxis()->SetTitle("Entries");
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mixh_[i]->DrawClone();
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}
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cvs[cvsName0]->SaveAs(TString(desDir+"Data_distributions.pdf"));
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//define the weight corrections for each sample
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double NevData = mixh_[2]->Integral();
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double corr_NevQCD = h_[2]->Integral();
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double corr_NevQCD_NEW = hQCD_NEW[2]->Integral();
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double corr_NevWjets = h_[5]->Integral();
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double corr_Nevttjets = h_[8]->Integral();
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double corr_Nevmix = procQCD*corr_NevQCD+procWjets*corr_NevWjets;
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//double corr_Nevmix = procQCD*corr_NevQCD+procWjets*corr_NevWjets+procttjets*corr_Nevttjets;
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if (!realData)
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outprint << "Events mix sample = " << corr_Nevmix << endl;
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else
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outprint << "Events in Data = " << NevData << endl;
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outprint << "Events QCD sample = " << corr_NevQCD << endl;
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outprint << "Events Wjets sample = " << corr_NevWjets << endl;
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outprint << "Events InvSel sample = " << corr_NevQCD_NEW << endl;
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//define the containers for chosen numbers (coressponding to the max KStest result)
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testMC maxProb[3];
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//define the scale factors calculated using information obtained from all parameters
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Double_t SFbackg = 0.0;
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Double_t sumSFbackg = 0.0;
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Double_t SFsample = 0.0;
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Double_t sumSFsample = 0.0;
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Double_t allKS = 0.0;
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//do the KS test by varying the scale factors
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for (int i = 0; i < 3; i++) { // 3 variables
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TH1F *data = (TH1F*)mixh_[i]->Clone();
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data -> SetName("dataClone");
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//data -> Scale(1./data->Integral());
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vector<testMC> resultsKS = doKStest((realData ? NevData : corr_Nevmix),
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(useInv ? corr_NevQCD_NEW : corr_NevQCD),
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corr_NevWjets,
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data, hQCD_NEW[i], h_[i+3]);
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testMC tksmax = getMax(resultsKS);
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maxProb[i] = tksmax;
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outprint << "\nFor the plot " << histoLabelX[i] << " the results are:"<< endl;
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outprint << "\tmax Probability = " << maxProb[i].prob << endl;
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outprint << "\tproc_background = " << maxProb[i].scaleF_backg << endl;
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outprint << "\tproc_sample = " << maxProb[i].scaleF_sample << endl;
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outprint << "\n\tpercent_B of Data = "
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<< maxProb[i].scaleF_backg*corr_NevQCD_NEW*100/(realData ? NevData : corr_Nevmix) << endl;
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outprint << "\tpercent_S of Data = "
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<< maxProb[i].scaleF_sample*corr_NevWjets*100/(realData ? NevData : corr_Nevmix) << endl;
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outprint << "---------------------------" << endl;
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//create the mixed samples with KS test results
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sumSFbackg += maxProb[i].prob*maxProb[i].scaleF_backg;
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sumSFsample += maxProb[i].prob*maxProb[i].scaleF_sample;
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allKS += maxProb[i].prob;
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//fill a histogram with the results from the KS test for each variable
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for (int jiter = 0; jiter < resultsKS.size(); jiter++) {
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if (resultsKS.at(jiter).prob == 1.)
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cout << "variable [" << i << "]: prob[" << jiter << "]= " << resultsKS.at(jiter).prob << endl;
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hKSvalues_[i]->SetBinContent(jiter,resultsKS.at(jiter).prob);
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}
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delete data;
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}
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//calculate the final scale factors
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SFbackg = sumSFbackg/allKS;
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SFsample = sumSFsample/allKS;
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outprint << "allKS = " << allKS << "\tbackground = " << SFbackg << "\tsample = " << SFsample << endl;
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outprint << "==> Scale Factor for QCD MC = " << SFbackg*corr_NevQCD_NEW/corr_NevQCD << endl;
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outprint << "\tcombined percent_B of Data = "
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<< SFbackg*corr_NevQCD_NEW*100/(realData ? NevData : corr_Nevmix) << endl;
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outprint << "\tcombined percent_S of Data = "
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<< SFsample*corr_NevWjets*100/(realData ? NevData : corr_Nevmix) << endl;
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outprint << "\n" << endl;
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outprint << "=================================" << endl;
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outprint << "\n" << endl;
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//=================================
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// Plots
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//=================================
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for (int i = 0; i < 3; i++) {// 3 variables
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hKSres_[i] -> Add(hQCD_NEW[i],h_[i+3],SFbackg,SFsample);
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outprint << "hKSres->Integral() = " << hKSres_[i]->Integral() << endl;
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outprint << "Data->Integral() = " << mixh_[i]->Integral() << endl;
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mixh_[i]->Rebin(2);
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hQCD_NEW[i]->Rebin(2);
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h_[i]->Rebin(2);
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h_[i+3]->Rebin(2);
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hKSres_[i]->Rebin(2);
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//hKSvalues_[i]->Rebin(2);
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// Stack Wjets and QCD after scaled by KS factors
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hQCD_KS[i] = (TH1F*) hQCD_NEW[i]->Clone();
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hQCD_KS[i]->Scale(SFbackg);
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hQCD_KS[i]->SetLineColor(style.QCDColor);
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hQCD_KS[i]->SetFillColor(style.QCDColor);
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hQCD_KS[i]->SetFillStyle(style.QCDFill);
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hWJets_KS[i] = (TH1F*) h_[i+3]->Clone();
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hWJets_KS[i]->Scale(SFsample);
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hWJets_KS[i]->SetLineColor(style.WJetsColor);
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hWJets_KS[i]->SetFillColor(style.WJetsColor);
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hWJets_KS[i]->SetFillStyle(style.WJetsFill);
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THStack *hst = new THStack(invName,invName);
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hst->Add(hQCD_KS[i]);
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hst->Add(hWJets_KS[i]);
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// Set plotting parameters
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mixh_[i] ->SetLineColor(1);
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hQCD_NEW[i] ->SetLineColor(2);
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h_[i] ->SetLineColor(4);
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h_[i+3] ->SetLineColor(3);
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hKSres_[i] ->SetLineColor(2);
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hKSvalues_[i]->SetLineColor(i+1);
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mixh_[i] ->SetMarkerColor(1);
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hQCD_NEW[i] ->SetMarkerColor(2);
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h_[i] ->SetMarkerColor(4);
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h_[i+3] ->SetMarkerColor(3);
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hKSres_[i] ->SetMarkerColor(2);
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hKSvalues_[i]->SetMarkerColor(i+1);
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mixh_[i] ->SetMarkerStyle(24);
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hQCD_NEW[i] ->SetMarkerStyle(20);
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h_[i] ->SetMarkerStyle(20);
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h_[i+3] ->SetMarkerStyle(20);
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hKSres_[i] ->SetMarkerStyle(20);
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hKSvalues_[i]->SetMarkerStyle(20);
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mixh_[i] ->SetMarkerSize(1.4);
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hQCD_NEW[i] ->SetMarkerSize(1.1);
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h_[i] ->SetMarkerSize(1.1);
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h_[i+3] ->SetMarkerSize(1.1);
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hKSres_[i] ->SetMarkerSize(0.9);
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hKSvalues_[i]->SetMarkerSize(1.1);
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mixh_[i] ->SetStats(0);
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hQCD_NEW[i] ->SetStats(0);
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h_[i] ->SetStats(0);
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h_[i+3] ->SetStats(0);
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hKSres_[i] ->SetStats(0);
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hKSvalues_[i]->SetStats(0);
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hQCD_KS[i] ->SetStats(0);
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hWJets_KS[i] ->SetStats(0);
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hKSres_[i]->GetXaxis()->SetTitle(histoLabelX[i].c_str());
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hKSres_[i]->GetYaxis()->SetTitle("Entries");
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hKSvalues_[i]->GetXaxis()->SetTitle("iteration #");
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hKSvalues_[i]->GetYaxis()->SetTitle("KS test values");
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h_[i]->GetXaxis()->SetTitle(histoLabelX[i].c_str());
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h_[i]->GetYaxis()->SetTitle("A.U.");
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TString nameCanvas1 = desDir+histoName[i]+"_QCD_"+suffix+".pdf";
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TString cvsName1 = histoName[i]+"_QCD";
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if(useInv) cvsName1 = cvsName1 + "_" + invName;
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cvs[cvsName1] = new TCanvas(cvsName1,"",600,700);
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hQCD_NEW[i] -> Scale(1./hQCD_NEW[i]->Integral());
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h_[i] -> Scale(1./h_[i]->Integral());
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h_[i+3] -> Scale(1./h_[i+3]->Integral());
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outprint << "For " << histoName[i] << " , the KStest result btw MC_QCD/InvSel is = "
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<< h_[i] -> KolmogorovTest(hQCD_NEW[i],"") << endl;
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h_[i]->Draw("P");
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if (useInv)
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hQCD_NEW[i]->Draw("sameP");
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h_[i+3]->Draw("sameP");
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TLegend *legend1 = new TLegend(0.7, 0.70, 0.9, 0.85);
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legend1->AddEntry(h_[i], "QCD");
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if (useInv)
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legend1->AddEntry(hQCD_NEW[i], "QCD - InvSel");
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legend1->AddEntry(h_[i+3], "W+jets");
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legend1->Draw();
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legend1->SetFillColor(kWhite);
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//latex->DrawLatex(0.22,0.91,histoName[i].c_str());
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//cvs[cvsName1]->SetLogy();
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cvs[cvsName1]->SaveAs(nameCanvas1);
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TString nameCanvas2 = desDir+histoName[i]+"_dataKS_"+suffix+".pdf";
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TString cvsName2 = histoName[i]+"_dataKS";
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if(useInv) cvsName2 = cvsName2 + "_" + invName;
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cvs[cvsName2] = new TCanvas(cvsName2,"",600,700);
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hst->Draw("hist");
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hKSres_[i]->Draw("sameP");
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mixh_[i]->Draw("sameP");
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TLegend *legend2 = new TLegend(0.7, 0.70, 0.9, 0.85);
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legend2->AddEntry(mixh_[i], "Data");
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legend2->AddEntry(hKSres_[i], "KS result");
|
| 359 |
legend2->AddEntry(hWJets_KS[i], style.WJetsText);
|
| 360 |
legend2->AddEntry(hQCD_KS[i], style.QCDText);
|
| 361 |
legend2->Draw();
|
| 362 |
legend2->SetFillColor(kWhite);
|
| 363 |
//latex->DrawLatex(0.22,0.91,histoName[i].c_str());
|
| 364 |
//cvs[cvsName2]->SetLogy();
|
| 365 |
cvs[cvsName2]->SaveAs(nameCanvas2);
|
| 366 |
}
|
| 367 |
|
| 368 |
TString cvsName3 = "KStestValues";
|
| 369 |
if(useInv) cvsName3 = cvsName3 + "_" + invName;
|
| 370 |
cvs[cvsName3] = new TCanvas(cvsName3,"",600,700);
|
| 371 |
//hKSvalues_[0]->GetXaxis()->SetRangeUser(0.9,1.2);
|
| 372 |
hKSvalues_[0]->GetYaxis()->SetRangeUser(1e-36,1.2);
|
| 373 |
hKSvalues_[0]->Draw();
|
| 374 |
hKSvalues_[1]->Draw("same");
|
| 375 |
hKSvalues_[2]->Draw("same");
|
| 376 |
TLegend *legend3 = new TLegend(0.7, 0.70, 0.9, 0.85);
|
| 377 |
legend3->AddEntry(hKSvalues_[0], "muon_pT");
|
| 378 |
legend3->AddEntry(hKSvalues_[1], "MET");
|
| 379 |
legend3->AddEntry(hKSvalues_[2], "W_mT");
|
| 380 |
legend3->Draw();
|
| 381 |
legend3->SetFillColor(kWhite);
|
| 382 |
//latex->DrawLatex(0.22,0.91,"KS test values");
|
| 383 |
cvs[cvsName3]->SetLogy();
|
| 384 |
TString nameCanvas3 = desDir+"KStestValues_newQCD"+suffix+".pdf";
|
| 385 |
cvs[cvsName3]->SaveAs(nameCanvas3);
|
| 386 |
}
|
| 387 |
}
|
