RooAbsData * Tprime::GetPseudoData( void ) {
//
// Generate pseudo data, return a pointer.
// Class member pointer data set to point to the dataset.
// Caller does not take ownership.
//
static int n_toys = 0;
// legend for printouts
std::string legend = "[Tprime::GetPseudoData()]: ";
delete data;
// We will use ToyMCSampler to generate pseudo-data (and test statistic, eventually)
// We are responsible for randomizing nuisances and global observables,
// ToyMCSampler only generates observables (as of ROOT 5.30.00-rc1 and before)
// MC sampler and test statistic
if(n_toys == 0) { // on first entry
// get B model config from workspace
RooStats::ModelConfig * pBModel = (RooStats::ModelConfig *)pWs->obj("BModel");
pBModel->SetWorkspace(*pWs);
// get parameter of interest set
//const RooArgSet * poi = pSbModel->GetParametersOfInterest();
//RooStats::TestStatistic * pTestStatistic = new RooStats::ProfileLikelihoodTestStat(*pBModel->GetPdf());
//RooStats::ToyMCSampler toymcs(*pTestStatistic, 1);
pTestStatistic = new RooStats::ProfileLikelihoodTestStat(*pBModel->GetPdf());
pToyMcSampler = new RooStats::ToyMCSampler(*pTestStatistic, 1);
pToyMcSampler->SetPdf(*pBModel->GetPdf());
pToyMcSampler->SetObservables(*pBModel->GetObservables());
pToyMcSampler->SetParametersForTestStat(*pBModel->GetParametersOfInterest()); // just POI
pToyMcSampler->SetGlobalObservables(*pBModel->GetGlobalObservables());
}
// load parameter point
pWs->loadSnapshot("parametersToGenerateData");
RooArgSet dummySet;
data = pToyMcSampler->GenerateToyData(dummySet);
std::cout << legend << "generated the following background-only pseudo-data:" << std::endl;
data->Print();
// count number of generated toys
++n_toys;
return data;
}
void Raa3S_Workspace(const char* name_pbpb="chad_ws_fits/centFits/ws_PbPbData_262548_263757_0cent10_0.0pt50.0_0.0y2.4.root", const char* name_pp="chad_ws_fits/centFits/ws_PPData_262157_262328_-1cent1_0.0pt50.0_0.0y2.4.root", const char* name_out="fitresult_combo.root"){
//TFile File(filename);
//RooWorkspace * ws = test_combine(name_pbpb, name_pp);
TFile *f = new TFile("fitresult_combo_333.root") ;
RooWorkspace * ws1 = (RooWorkspace*) f->Get("wcombo");
//File.GetObject("wcombo", ws);
ws1->Print();
RooAbsData * data = ws1->data("data"); //dataOS, dataSS
// RooDataSet * US_data = (RooDataSet*) data->reduce( "QQsign == QQsign::PlusMinus");
// US_data->SetName("US_data");
// ws->import(* US_data);
// RooDataSet * hi_data = (RooDataSet*) US_data->reduce("dataCat == dataCat::hi");
// hi_data->SetName("hi_data");
// ws->import(* hi_data);
// hi_data->Print();
RooRealVar* raa3 = new RooRealVar("raa3","R_{AA}(#Upsilon (3S))",0.5,-1,1);
RooRealVar* leftEdge = new RooRealVar("leftEdge","leftEdge",0);
RooRealVar* rightEdge = new RooRealVar("rightEdge","rightEdge",1);
RooGenericPdf step("step", "step", "(@0 >= @1) && (@0 < @2)", RooArgList(*raa3, *leftEdge, *rightEdge));
ws1->import(step);
ws1->factory( "Uniform::flat(raa3)" );
//pp Luminosities, Taa and efficiency ratios Systematics
ws1->factory( "Taa_hi[5.662e-9]" );
ws1->factory( "Taa_kappa[1.062]" ); // was 1.057
ws1->factory( "expr::alpha_Taa('pow(Taa_kappa,beta_Taa)',Taa_kappa,beta_Taa[0,-5,5])" );
ws1->factory( "prod::Taa_nom(Taa_hi,alpha_Taa)" );
ws1->factory( "Gaussian::constr_Taa(beta_Taa,glob_Taa[0,-5,5],1)" );
ws1->factory( "lumipp_hi[5.4]" );
ws1->factory( "lumipp_kappa[1.037]" ); // was 1.06
ws1->factory( "expr::alpha_lumipp('pow(lumipp_kappa,beta_lumipp)',lumipp_kappa,beta_lumipp[0,-5,5])" );
ws1->factory( "prod::lumipp_nom(lumipp_hi,alpha_lumipp)" );
ws1->factory( "Gaussian::constr_lumipp(beta_lumipp,glob_lumipp[0,-5,5],1)" );
// ws->factory( "effRat1[1]" );
// ws->factory( "effRat2[1]" );
ws1->factory( "effRat3_hi[0.95]" );
ws1->factory( "effRat_kappa[1.054]" );
ws1->factory( "expr::alpha_effRat('pow(effRat_kappa,beta_effRat)',effRat_kappa,beta_effRat[0,-5,5])" );
// ws->factory( "prod::effRat1_nom(effRat1_hi,alpha_effRat)" );
ws1->factory( "Gaussian::constr_effRat(beta_effRat,glob_effRat[0,-5,5],1)" );
// ws->factory( "prod::effRat2_nom(effRat2_hi,alpha_effRat)" );
ws1->factory( "prod::effRat3_nom(effRat3_hi,alpha_effRat)" );
//
ws1->factory("Nmb_hi[1.161e9]");
ws1->factory("prod::denominator(Taa_nom,Nmb_hi)");
ws1->factory( "expr::lumiOverTaaNmbmodified('lumipp_nom/denominator',lumipp_nom,denominator)");
RooAbsReal *lumiOverTaaNmbmodified = ws1->function("lumiOverTaaNmbmodified"); //RooFormulaVar *lumiOverTaaNmbmodified = ws->function("lumiOverTaaNmbmodified");
//
// RooRealVar *raa1 = ws->var("raa1");
// RooRealVar* nsig1_pp = ws->var("nsig1_pp");
// RooRealVar* effRat1 = ws->function("effRat1_nom");
// RooRealVar *raa2 = ws->var("raa2");
// RooRealVar* nsig2_pp = ws->var("nsig2_pp");
// RooRealVar* effRat2 = ws->function("effRat2_nom");
RooRealVar* nsig3_pp = ws1->var("R_{#frac{3S}{1S}}_pp"); //RooRealVar* nsig3_pp = ws->var("N_{#Upsilon(3S)}_pp");
cout << nsig3_pp << endl;
RooAbsReal* effRat3 = ws1->function("effRat3_nom"); //RooRealVar* effRat3 = ws->function("effRat3_nom");
//
// RooFormulaVar nsig1_hi_modified("nsig1_hi_modified", "@0*@1*@3/@2", RooArgList(*raa1, *nsig1_pp, *lumiOverTaaNmbmodified, *effRat1));
// ws->import(nsig1_hi_modified);
// RooFormulaVar nsig2_hi_modified("nsig2_hi_modified", "@0*@1*@3/@2", RooArgList(*raa2, *nsig2_pp, *lumiOverTaaNmbmodified, *effRat2));
// ws->import(nsig2_hi_modified);
RooFormulaVar nsig3_hi_modified("nsig3_hi_modified", "@0*@1*@3/@2", RooArgList(*raa3, *nsig3_pp, *lumiOverTaaNmbmodified, *effRat3));
ws1->import(nsig3_hi_modified);
// // background yield with systematics
ws1->factory( "nbkg_hi_kappa[1.10]" );
ws1->factory( "expr::alpha_nbkg_hi('pow(nbkg_hi_kappa,beta_nbkg_hi)',nbkg_hi_kappa,beta_nbkg_hi[0,-5,5])" );
ws1->factory( "SUM::nbkg_hi_nom(alpha_nbkg_hi*bkgPdf_hi)" );
ws1->factory( "Gaussian::constr_nbkg_hi(beta_nbkg_hi,glob_nbkg_hi[0,-5,5],1)" );
RooAbsPdf* sig1S_hi = ws1->pdf("sig1S_hi"); //RooAbsPdf* sig1S_hi = ws->pdf("cbcb_hi");
RooAbsPdf* sig2S_hi = ws1->pdf("sig2S_hi");
RooAbsPdf* sig3S_hi = ws1->pdf("sig3S_hi");
RooAbsPdf* LSBackground_hi = ws1->pdf("nbkg_hi_nom");
RooRealVar* nsig1_hi = ws1->var("N_{#Upsilon(1S)}_hi");
RooRealVar* nsig2_hi = ws1->var("R_{#frac{2S}{1S}}_hi");
RooAbsReal* nsig3_hi = ws1->function("nsig3_hi_modified"); //RooFormulaVar* nsig3_hi = ws->function("nsig3_hi_modified");
cout << nsig1_hi << " " << nsig2_hi << " " << nsig3_pp << endl;
RooRealVar* norm_nbkg_hi = ws1->var("n_{Bkgd}_hi");
RooArgList pdfs_hi( *sig1S_hi,*sig2S_hi,*sig3S_hi, *LSBackground_hi);
RooArgList norms_hi(*nsig1_hi,*nsig2_hi,*nsig3_hi, *norm_nbkg_hi);
////////////////////////////////////////////////////////////////////////////////
ws1->factory( "nbkg_pp_kappa[1.03]" );
ws1->factory( "expr::alpha_nbkg_pp('pow(nbkg_pp_kappa,beta_nbkg_pp)',nbkg_pp_kappa,beta_nbkg_pp[0,-5,5])" );
ws1->factory( "SUM::nbkg_pp_nom(alpha_nbkg_pp*bkgPdf_pp)" );
ws1->factory( "Gaussian::constr_nbkg_pp(beta_nbkg_pp,glob_nbkg_pp[0,-5,5],1)" );
RooAbsPdf* sig1S_pp = ws1->pdf("sig1S_pp"); //RooAbsPdf* sig1S_pp = ws1->pdf("cbcb_pp");
RooAbsPdf* sig2S_pp = ws1->pdf("sig2S_pp");
RooAbsPdf* sig3S_pp = ws1->pdf("sig3S_pp");
RooAbsPdf* LSBackground_pp = ws1->pdf("nbkg_pp_nom");
RooRealVar* nsig1_pp = ws1->var("N_{#Upsilon(1S)}_pp");
RooRealVar* nsig2_pp = ws1->var("R_{#frac{2S}{1S}}_pp"); //RooRealVar* nsig2_pp = ws1->var("N_{#Upsilon(2S)}_pp");
// RooRealVar* nsig3_pp = ws1->var("N_{#Upsilon(3S)}_pp");
RooRealVar* norm_nbkg_pp = ws1->var("n_{Bkgd}_pp");
RooArgList pdfs_pp( *sig1S_pp,*sig2S_pp,*sig3S_pp, *LSBackground_pp);
RooArgList norms_pp( *nsig1_pp,*nsig2_pp,*nsig3_pp,*norm_nbkg_pp);
RooAddPdf model_num("model_num", "model_num", pdfs_hi,norms_hi);
ws1->import(model_num);
ws1->factory("PROD::model_hi(model_num, constr_nbkg_hi,constr_lumipp,constr_Taa,constr_effRat)");
RooAddPdf model_den("model_den", "model_den", pdfs_pp,norms_pp);
ws1->import(model_den);
ws1->factory("PROD::model_pp(model_den, constr_nbkg_pp)");
ws1->factory("SIMUL::joint(dataCat,hi=model_hi,pp=model_pp)");
/////////////////////////////////////////////////////////////////////
RooRealVar * pObs = ws1->var("invariantMass"); // get the pointer to the observable
RooArgSet obs("observables");
obs.add(*pObs);
obs.add( *ws1->cat("dataCat"));
// /////////////////////////////////////////////////////////////////////
ws1->var("glob_lumipp")->setConstant(true);
ws1->var("glob_Taa")->setConstant(true);
ws1->var("glob_effRat")->setConstant(true);
ws1->var("glob_nbkg_pp")->setConstant(true);
ws1->var("glob_nbkg_hi")->setConstant(true);
RooArgSet globalObs("global_obs");
globalObs.add( *ws1->var("glob_lumipp") );
globalObs.add( *ws1->var("glob_Taa") );
globalObs.add( *ws1->var("glob_effRat") );
globalObs.add( *ws1->var("glob_nbkg_hi") );
globalObs.add( *ws1->var("glob_nbkg_pp") );
cout << "66666" << endl;
// ws1->Print();
RooArgSet poi("poi");
poi.add( *ws1->var("raa3") );
cout << "77777" << endl;
// create set of nuisance parameters
RooArgSet nuis("nuis");
nuis.add( *ws1->var("beta_lumipp") );
nuis.add( *ws1->var("beta_nbkg_hi") );
nuis.add( *ws1->var("beta_nbkg_pp") );
nuis.add( *ws1->var("beta_Taa") );
nuis.add( *ws1->var("beta_effRat") );
cout << "88888" << endl;
ws1->var("#alpha_{CB}_hi")->setConstant(true);
ws1->var("#alpha_{CB}_pp")->setConstant(true);
ws1->var("#sigma_{CB1}_hi")->setConstant(true);
ws1->var("#sigma_{CB1}_pp")->setConstant(true);
ws1->var("#sigma_{CB2}/#sigma_{CB1}_hi")->setConstant(true);
ws1->var("#sigma_{CB2}/#sigma_{CB1}_pp")->setConstant(true);
//ws1->var("Centrality")->setConstant(true); //delete
ws1->var("N_{#varUpsilon(1S)}_hi")->setConstant(true);
ws1->var("N_{#varUpsilon(1S)}_pp")->setConstant(true);
//ws1->var("N_{#Upsilon(2S)}_hi")->setConstant(true);
//ws1->var("N_{#Upsilon(2S)}_pp")->setConstant(true);
//ws1->var("N_{#Upsilon(3S)}_pp")->setConstant(true);
ws1->var("R_{#frac{2S}{1S}}_hi")->setConstant(true); //new
ws1->var("R_{#frac{2S}{1S}}_pp")->setConstant(true); //new
ws1->var("R_{#frac{3S}{1S}}_hi")->setConstant(true); //new
ws1->var("R_{#frac{3S}{1S}}_pp")->setConstant(true); //new
ws1->var("Nmb_hi")->setConstant(true);
// ws1->var("QQsign")->setConstant(true);
ws1->var("Taa_hi")->setConstant(true);
ws1->var("Taa_kappa")->setConstant(true);
// ws1->var("beta_Taa")->setConstant(true);
// ws1->var("beta_effRat")->setConstant(true);
// ws1->var("beta_lumipp")->setConstant(true);
// ws1->var("beta_nbkg_hi")->setConstant(true);
// ws1->var("beta_nbkg_pp")->setConstant(true);
// ws1->var("dataCat")->setConstant(true);
ws1->var("decay_hi")->setConstant(true);
ws1->var("decay_pp")->setConstant(true);
ws1->var("effRat3_hi")->setConstant(true);
ws1->var("effRat_kappa")->setConstant(true);
// ws1->var("glob_Taa")->setConstant(true);
// ws1->var("glob_effRat")->setConstant(true);
// ws1->var("glob_lumipp")->setConstant(true);
// ws1->var("glob_nbkg_hi")->setConstant(true);
// ws1->var("glob_nbkg_pp")->setConstant(true);
// ws1->var("invariantMass")->setConstant(true);
ws1->var("leftEdge")->setConstant(true);
ws1->var("lumipp_hi")->setConstant(true);
ws1->var("lumipp_kappa")->setConstant(true);
ws1->var("m_{ #varUpsilon(1S)}_hi")->setConstant(true); //ws1->var("mass1S_hi")->setConstant(true);
ws1->var("m_{ #varUpsilon(1S)}_pp")->setConstant(true); //ws1->var("mass1S_pp")->setConstant(true);
ws1->var("muMinusPt")->setConstant(true);
ws1->var("muPlusPt")->setConstant(true);
ws1->var("n_{Bkgd}_hi")->setConstant(true);
ws1->var("n_{Bkgd}_pp")->setConstant(true);
ws1->var("nbkg_hi_kappa")->setConstant(true);
ws1->var("nbkg_pp_kappa")->setConstant(true);
//ws1->var("n_{CB}")->setConstant(true); //ws1->var("n_{CB}")->setConstant(true); //ws1->var("npow")->setConstant(true);
ws1->var("n_{CB}_hi")->setConstant(true); //ws1->var("n_{CB}")->setConstant(true); //ws1->var("npow")->setConstant(true);
ws1->var("n_{CB}_pp")->setConstant(true); //ws1->var("n_{CB}")->setConstant(true); //ws1->var("npow")->setConstant(true);
// ws1->var("raa3")->setConstant(true);
ws1->var("rightEdge")->setConstant(true);
ws1->var("sigmaFraction_hi")->setConstant(true);
ws1->var("sigmaFraction_pp")->setConstant(true);
ws1->var("turnOn_hi")->setConstant(true);
ws1->var("turnOn_pp")->setConstant(true);
ws1->var("dimuPt")->setConstant(true); //ws1->var("upsPt")->setConstant(true);
ws1->var("dimuRapidity")->setConstant(true); //ws1->var("upsRapidity")->setConstant(true);
ws1->var("vProb")->setConstant(true);
ws1->var("width_hi")->setConstant(true);
ws1->var("width_pp")->setConstant(true);
// ws1->var("x3raw")->setConstant(true);
// RooArgSet fixed_again("fixed_again");
// fixed_again.add( *ws1->var("leftEdge") );
// fixed_again.add( *ws1->var("rightEdge") );
// fixed_again.add( *ws1->var("Taa_hi") );
// fixed_again.add( *ws1->var("Nmb_hi") );
// fixed_again.add( *ws1->var("lumipp_hi") );
// fixed_again.add( *ws1->var("effRat1_hi") );
// fixed_again.add( *ws1->var("effRat2_hi") );
// fixed_again.add( *ws1->var("effRat3_hi") );
// fixed_again.add( *ws1->var("nsig3_pp") );
// fixed_again.add( *ws1->var("nsig1_pp") );
// fixed_again.add( *ws1->var("nbkg_hi") );
// fixed_again.add( *ws1->var("alpha") );
// fixed_again.add( *ws1->var("nbkg_kappa") );
// fixed_again.add( *ws1->var("Taa_kappa") );
// fixed_again.add( *ws1->var("lumipp_kappa") );
// fixed_again.add( *ws1->var("mean_hi") );
// fixed_again.add( *ws1->var("mean_pp") );
// fixed_again.add( *ws1->var("width_hi") );
// fixed_again.add( *ws1->var("turnOn_hi") );
// fixed_again.add( *ws1->var("bkg_a1_pp") );
// fixed_again.add( *ws1->var("bkg_a2_pp") );
// fixed_again.add( *ws1->var("decay_hi") );
// fixed_again.add( *ws1->var("raa1") );
// fixed_again.add( *ws1->var("raa2") );
// fixed_again.add( *ws1->var("nsig2_pp") );
// fixed_again.add( *ws1->var("sigma1") );
// fixed_again.add( *ws1->var("nbkg_pp") );
// fixed_again.add( *ws1->var("npow") );
// fixed_again.add( *ws1->var("muPlusPt") );
// fixed_again.add( *ws1->var("muMinusPt") );
// fixed_again.add( *ws1->var("mscale_hi") );
// fixed_again.add( *ws1->var("mscale_pp") );
//
// ws1->Print();
cout << "99999" << endl;
// create signal+background Model Config
RooStats::ModelConfig sbHypo("SbHypo");
sbHypo.SetWorkspace( *ws1 );
sbHypo.SetPdf( *ws1->pdf("joint") );
sbHypo.SetObservables( obs );
sbHypo.SetGlobalObservables( globalObs );
sbHypo.SetParametersOfInterest( poi );
sbHypo.SetNuisanceParameters( nuis );
sbHypo.SetPriorPdf( *ws1->pdf("step") ); // this is optional
// ws1->Print();
/////////////////////////////////////////////////////////////////////
RooAbsReal * pNll = sbHypo.GetPdf()->createNLL( *data,NumCPU(10) );
cout << "111111" << endl;
RooMinuit(*pNll).migrad(); // minimize likelihood wrt all parameters before making plots
cout << "444444" << endl;
RooPlot *framepoi = ((RooRealVar *)poi.first())->frame(Bins(10),Range(0.,0.2),Title("LL and profileLL in raa3"));
cout << "222222" << endl;
pNll->plotOn(framepoi,ShiftToZero());
cout << "333333" << endl;
RooAbsReal * pProfile = pNll->createProfile( globalObs ); // do not profile global observables
pProfile->getVal(); // this will do fit and set POI and nuisance parameters to fitted values
pProfile->plotOn(framepoi,LineColor(kRed));
framepoi->SetMinimum(0);
framepoi->SetMaximum(3);
TCanvas *cpoi = new TCanvas();
cpoi->cd(); framepoi->Draw();
cpoi->SaveAs("cpoi.pdf");
((RooRealVar *)poi.first())->setMin(0.);
RooArgSet * pPoiAndNuisance = new RooArgSet("poiAndNuisance");
// pPoiAndNuisance->add(*sbHypo.GetNuisanceParameters());
// pPoiAndNuisance->add(*sbHypo.GetParametersOfInterest());
pPoiAndNuisance->add( nuis );
pPoiAndNuisance->add( poi );
sbHypo.SetSnapshot(*pPoiAndNuisance);
RooPlot* xframeSB = pObs->frame(Title("SBhypo"));
data->plotOn(xframeSB,Cut("dataCat==dataCat::hi"));
RooAbsPdf *pdfSB = sbHypo.GetPdf();
RooCategory *dataCat = ws1->cat("dataCat");
pdfSB->plotOn(xframeSB,Slice(*dataCat,"hi"),ProjWData(*dataCat,*data));
TCanvas *c1 = new TCanvas();
c1->cd(); xframeSB->Draw();
c1->SaveAs("c1.pdf");
delete pProfile;
delete pNll;
delete pPoiAndNuisance;
ws1->import( sbHypo );
/////////////////////////////////////////////////////////////////////
RooStats::ModelConfig bHypo = sbHypo;
bHypo.SetName("BHypo");
bHypo.SetWorkspace(*ws1);
pNll = bHypo.GetPdf()->createNLL( *data,NumCPU(2) );
RooArgSet poiAndGlobalObs("poiAndGlobalObs");
poiAndGlobalObs.add( poi );
poiAndGlobalObs.add( globalObs );
pProfile = pNll->createProfile( poiAndGlobalObs ); // do not profile POI and global observables
((RooRealVar *)poi.first())->setVal( 0 ); // set raa3=0 here
pProfile->getVal(); // this will do fit and set nuisance parameters to profiled values
pPoiAndNuisance = new RooArgSet( "poiAndNuisance" );
pPoiAndNuisance->add( nuis );
pPoiAndNuisance->add( poi );
bHypo.SetSnapshot(*pPoiAndNuisance);
RooPlot* xframeB = pObs->frame(Title("Bhypo"));
data->plotOn(xframeB,Cut("dataCat==dataCat::hi"));
RooAbsPdf *pdfB = bHypo.GetPdf();
pdfB->plotOn(xframeB,Slice(*dataCat,"hi"),ProjWData(*dataCat,*data));
TCanvas *c2 = new TCanvas();
c2->cd(); xframeB->Draw();
c2->SaveAs("c2.pdf");
delete pProfile;
delete pNll;
delete pPoiAndNuisance;
// import model config into workspace
bHypo.SetWorkspace(*ws1);
ws1->import( bHypo );
/////////////////////////////////////////////////////////////////////
ws1->Print();
bHypo.Print();
sbHypo.Print();
// save workspace to file
ws1 -> SaveAs(name_out);
return;
}
void MakeWorkspace( void ){
//
// this function implements a RooFit model for a counting experiment
//
// create workspace
RooWorkspace * pWs = new RooWorkspace("myWS");
// observable: number of events
pWs->factory( "n[0.0]" );
// integrated luminosity with systematics
pWs->factory( "lumi_nom[5000.0, 4000.0, 6000.0]" );
pWs->factory( "lumi_kappa[1.045]" );
pWs->factory( "cexpr::alpha_lumi('pow(lumi_kappa,beta_lumi)',lumi_kappa,beta_lumi[0,-5,5])" );
pWs->factory( "prod::lumi(lumi_nom,alpha_lumi)" );
pWs->factory( "Gaussian::constr_lumi(beta_lumi,glob_lumi[0,-5,5],1)" );
// cross section - parameter of interest
pWs->factory( "xsec[0.001,0.0,0.1]" );
// selection efficiency * acceptance with systematics
pWs->factory( "efficiency_nom[0.1, 0.05, 0.15]" );
pWs->factory( "efficiency_kappa[1.10]" );
pWs->factory( "cexpr::alpha_efficiency('pow(efficiency_kappa,beta_efficiency)',efficiency_kappa,beta_efficiency[0,-5,5])" );
pWs->factory( "prod::efficiency(efficiency_nom,alpha_efficiency)" );
pWs->factory( "Gaussian::constr_efficiency(beta_efficiency,glob_efficiency[0,-5,5],1)" );
// signal yield
pWs->factory( "prod::nsig(lumi,xsec,efficiency)" );
// background yield with systematics
pWs->factory( "nbkg_nom[10.0, 5.0, 15.0]" );
pWs->factory( "nbkg_kappa[1.10]" );
pWs->factory( "cexpr::alpha_nbkg('pow(nbkg_kappa,beta_nbkg)',nbkg_kappa,beta_nbkg[0,-5,5])" );
pWs->factory( "prod::nbkg(nbkg_nom,alpha_lumi,alpha_nbkg)" );
pWs->factory( "Gaussian::constr_nbkg(beta_nbkg,glob_nbkg[0,-5,5],1)" );
// full event yield
pWs->factory("sum::yield(nsig,nbkg)");
// Core model: Poisson probability with mean signal+bkg
pWs->factory( "Poisson::model_core(n,yield)" );
// define Bayesian prior PDF for POI
pWs->factory( "Uniform::prior(xsec)" );
// model with systematics
pWs->factory( "PROD::model(model_core,constr_lumi,constr_efficiency,constr_nbkg)" );
// create set of observables (will need it for datasets and ModelConfig later)
RooRealVar * pObs = pWs->var("n"); // get the pointer to the observable
RooArgSet obs("observables");
obs.add(*pObs);
// create the dataset
pObs->setVal(11); // this is your observed data: we counted ten events
RooDataSet * data = new RooDataSet("data", "data", obs);
data->add( *pObs );
// import dataset into workspace
pWs->import(*data);
// create set of global observables (need to be defined as constants)
pWs->var("glob_lumi")->setConstant(true);
pWs->var("glob_efficiency")->setConstant(true);
pWs->var("glob_nbkg")->setConstant(true);
RooArgSet globalObs("global_obs");
globalObs.add( *pWs->var("glob_lumi") );
globalObs.add( *pWs->var("glob_efficiency") );
globalObs.add( *pWs->var("glob_nbkg") );
// create set of parameters of interest (POI)
RooArgSet poi("poi");
poi.add( *pWs->var("xsec") );
// create set of nuisance parameters
RooArgSet nuis("nuis");
nuis.add( *pWs->var("beta_lumi") );
nuis.add( *pWs->var("beta_efficiency") );
nuis.add( *pWs->var("beta_nbkg") );
// create signal+background Model Config
RooStats::ModelConfig sbHypo("SbHypo");
sbHypo.SetWorkspace( *pWs );
sbHypo.SetPdf( *pWs->pdf("model") );
sbHypo.SetObservables( obs );
sbHypo.SetGlobalObservables( globalObs );
sbHypo.SetParametersOfInterest( poi );
sbHypo.SetNuisanceParameters( nuis );
sbHypo.SetPriorPdf( *pWs->pdf("prior") ); // this is optional
// fix all other variables in model:
// everything except observables, POI, and nuisance parameters
// must be constant
pWs->var("lumi_nom")->setConstant(true);
pWs->var("efficiency_nom")->setConstant(true);
pWs->var("nbkg_nom")->setConstant(true);
pWs->var("lumi_kappa")->setConstant(true);
pWs->var("efficiency_kappa")->setConstant(true);
pWs->var("nbkg_kappa")->setConstant(true);
RooArgSet fixed("fixed");
fixed.add( *pWs->var("lumi_nom") );
fixed.add( *pWs->var("efficiency_nom") );
fixed.add( *pWs->var("nbkg_nom") );
fixed.add( *pWs->var("lumi_kappa") );
fixed.add( *pWs->var("efficiency_kappa") );
fixed.add( *pWs->var("nbkg_kappa") );
// set parameter snapshot that corresponds to the best fit to data
RooAbsReal * pNll = sbHypo.GetPdf()->createNLL( *data );
RooAbsReal * pProfile = pNll->createProfile( globalObs ); // do not profile global observables
pProfile->getVal(); // this will do fit and set POI and nuisance parameters to fitted values
RooArgSet * pPoiAndNuisance = new RooArgSet("poiAndNuisance");
pPoiAndNuisance->add(*sbHypo.GetNuisanceParameters());
pPoiAndNuisance->add(*sbHypo.GetParametersOfInterest());
sbHypo.SetSnapshot(*pPoiAndNuisance);
delete pProfile;
delete pNll;
delete pPoiAndNuisance;
// import S+B ModelConfig into workspace
pWs->import( sbHypo );
// create background-only Model Config from the S+B one
RooStats::ModelConfig bHypo = sbHypo;
bHypo.SetName("BHypo");
bHypo.SetWorkspace(*pWs);
// set parameter snapshot for bHypo, setting xsec=0
// it is useful to understand how this block of code works
// but you can also use it as a recipe to make a parameter snapshot
pNll = bHypo.GetPdf()->createNLL( *data );
RooArgSet poiAndGlobalObs("poiAndGlobalObs");
poiAndGlobalObs.add( poi );
poiAndGlobalObs.add( globalObs );
pProfile = pNll->createProfile( poiAndGlobalObs ); // do not profile POI and global observables
((RooRealVar *)poi.first())->setVal( 0 ); // set xsec=0 here
pProfile->getVal(); // this will do fit and set nuisance parameters to profiled values
pPoiAndNuisance = new RooArgSet( "poiAndNuisance" );
pPoiAndNuisance->add( nuis );
pPoiAndNuisance->add( poi );
bHypo.SetSnapshot(*pPoiAndNuisance);
delete pProfile;
delete pNll;
delete pPoiAndNuisance;
// import model config into workspace
pWs->import( bHypo );
// print out the workspace contents
pWs->Print();
// save workspace to file
pWs -> SaveAs("workspace.root");
return;
}
void combinedWorkspace_4WS(const char* name_pbpb_pass="******", const char* name_pbpb_fail="fitresult_pbpb_fail.root", const char* name_pp_pass="******", const char* name_pp_fail="fitresult_pp_fail.root", const char* name_out="fitresult_combo.root", const float systval = 0., const char* subDirName ="wsTest", int nCPU=2){
// subdir: Directory to save workspaces under currentPATH/CombinedWorkspaces/subDir/
// set things silent
gErrorIgnoreLevel=kError;
RooMsgService::instance().setGlobalKillBelow(RooFit::ERROR);
bool dosyst = (systval > 0.);
TString nameOut(name_out);
RooWorkspace * ws = test_combine_4WS(name_pbpb_pass, name_pp_pass, name_pbpb_fail, name_pp_fail, false, nCPU);
RooAbsData * data = ws->data("dOS_DATA");
RooRealVar* RFrac2Svs1S_PbPbvsPP_P = ws->var("RFrac2Svs1S_PbPbvsPP_P");
RooRealVar* leftEdge = new RooRealVar("leftEdge","leftEdge",-10);
RooRealVar* rightEdge = new RooRealVar("rightEdge","rightEdge",10);
RooGenericPdf step("step", "step", "(@0 >= @1) && (@0 < @2)", RooArgList(*RFrac2Svs1S_PbPbvsPP_P, *leftEdge, *rightEdge));
ws->import(step);
ws->factory( "Uniform::flat(RFrac2Svs1S_PbPbvsPP_P)" );
// systematics
if (dosyst) {
ws->factory( Form("kappa_syst[%f]",systval) );
ws->factory( "expr::alpha_syst('kappa_syst*beta_syst',kappa_syst,beta_syst[0,-5,5])" );
ws->factory( "Gaussian::constr_syst(beta_syst,glob_syst[0,-5,5],1)" );
// add systematics into the double ratio
ws->factory( "expr::RFrac2Svs1S_PbPbvsPP_P_syst('@0+@1',RFrac2Svs1S_PbPbvsPP_P,alpha_syst)" );
// build the pbpb pdf
RooRealVar* effjpsi_pp_P = (RooRealVar*)ws->var("effjpsi_pp_P");
RooRealVar* effpsip_pp_P = (RooRealVar*)ws->var("effpsip_pp_P");
RooRealVar* effjpsi_pp_NP = (RooRealVar*)ws->var("effjpsi_pp_NP");
Double_t Npsi2SPbPbPass = npsip_pbpb_pass_from_doubleratio_prompt(ws, RooArgList(*effjpsi_pp_P,*effpsip_pp_P,*effjpsi_pp_NP),true); // Create and import N_Psi2S_PbPb_pass_syst
ws->factory( "SUM::pdfMASS_Tot_PbPb_pass_syst(N_Jpsi_PbPb_pass * pdfMASS_Jpsi_PbPb_pass, N_Psi2S_PbPb_pass_syst * pdfMASS_Psi2S_PbPb_pass, N_Bkg_PbPb_pass * pdfMASS_Bkg_PbPb_pass)" );
ws->factory( "PROD::pdfMASS_Tot_PbPb_pass_constr(pdfMASS_Tot_PbPb_pass_syst,constr_syst)" );
// build the combined pdf
ws->factory("SIMUL::simPdf_syst_noconstr(sample,PbPb_pass=pdfMASS_Tot_PbPb_pass_syst,PbPb_fail=pdfMASS_Tot_PbPb_fail,PP_pass=pdfMASS_Tot_PP_pass,PP_fail=pdfMASS_Tot_PP_fail)");
RooSimultaneous *simPdf = (RooSimultaneous*) ws->pdf("simPdf_syst_noconstr");
RooGaussian *constr_syst = (RooGaussian*) ws->pdf("constr_syst");
RooProdPdf *simPdf_constr = new RooProdPdf("simPdf_syst","simPdf_syst",RooArgSet(*simPdf,*constr_syst));
ws->import(*simPdf_constr);
} else {
ws->factory("SIMUL::simPdf_syst(sample,PbPb_pass=pdfMASS_Tot_PbPb_pass,PbPb_fail=pdfMASS_Tot_PbPb_fail,PP_pass=pdfMASS_Tot_PP_pass,PP_fail=pdfMASS_Tot_PP_fail)");
}
ws->Print();
if (dosyst) ws->var("beta_syst")->setConstant(kFALSE);
/////////////////////////////////////////////////////////////////////
RooRealVar * pObs = ws->var("invMass"); // get the pointer to the observable
RooArgSet obs("observables");
obs.add(*pObs);
obs.add( *ws->cat("sample"));
// /////////////////////////////////////////////////////////////////////
if (dosyst) ws->var("glob_syst")->setConstant(true);
RooArgSet globalObs("global_obs");
if (dosyst) globalObs.add( *ws->var("glob_syst") );
// ws->Print();
RooArgSet poi("poi");
poi.add( *ws->var("RFrac2Svs1S_PbPbvsPP_P") );
// create set of nuisance parameters
RooArgSet nuis("nuis");
if (dosyst) nuis.add( *ws->var("beta_syst") );
// set parameters constant
RooArgSet allVars = ws->allVars();
TIterator* it = allVars.createIterator();
RooRealVar *theVar = (RooRealVar*) it->Next();
while (theVar) {
TString varname(theVar->GetName());
// if (varname != "RFrac2Svs1S_PbPbvsPP"
// && varname != "invMass"
// && varname != "sample"
// )
// theVar->setConstant();
if ( varname.Contains("f_Jpsi_PP") || varname.Contains("f_Jpsi_PbPb") ||
varname.Contains("rSigma21_Jpsi_PP") ||
varname.Contains("m_Jpsi_PP") || varname.Contains("m_Jpsi_PbPb") ||
varname.Contains("sigma1_Jpsi_PP") || varname.Contains("sigma1_Jpsi_PbPb") ||
(varname.Contains("lambda")) ||
(varname.Contains("_fail") && !varname.Contains("RFrac2Svs1S")))
{
theVar->setConstant();
}
if (varname=="glob_syst"
|| varname=="beta_syst"
) {
cout << varname << endl;
theVar->setConstant(!dosyst);
}
theVar = (RooRealVar*) it->Next();
}
// create signal+background Model Config
RooStats::ModelConfig sbHypo("SbHypo");
sbHypo.SetWorkspace( *ws );
sbHypo.SetPdf( *ws->pdf("simPdf_syst") );
sbHypo.SetObservables( obs );
sbHypo.SetGlobalObservables( globalObs );
sbHypo.SetParametersOfInterest( poi );
sbHypo.SetNuisanceParameters( nuis );
sbHypo.SetPriorPdf( *ws->pdf("step") ); // this is optional
/////////////////////////////////////////////////////////////////////
RooAbsReal * pNll = sbHypo.GetPdf()->createNLL( *data,NumCPU(nCPU) );
RooMinuit(*pNll).migrad(); // minimize likelihood wrt all parameters before making plots
if (controlPlots)
{
RooPlot *framepoi = ((RooRealVar *)poi.first())->frame(Bins(10),Range(0.,1),Title("LL and profileLL in RFrac2Svs1S_PbPbvsPP_P"));
pNll->plotOn(framepoi,ShiftToZero());
framepoi->SetMinimum(0);
framepoi->SetMaximum(10);
TCanvas *cpoi = new TCanvas();
cpoi->cd(); framepoi->Draw();
cpoi->SaveAs("cpoi.pdf");
}
((RooRealVar *)poi.first())->setMin(0.);
RooArgSet * pPoiAndNuisance = new RooArgSet("poiAndNuisance");
pPoiAndNuisance->add( nuis );
pPoiAndNuisance->add( poi );
sbHypo.SetSnapshot(*pPoiAndNuisance);
if (controlPlots)
{
RooPlot* xframeSB_PP_pass = pObs->frame(Title("SBhypo_PP_pass"));
data->plotOn(xframeSB_PP_pass,Cut("sample==sample::PP_pass"));
RooAbsPdf *pdfSB_PP_pass = sbHypo.GetPdf();
RooCategory *sample = ws->cat("sample");
pdfSB_PP_pass->plotOn(xframeSB_PP_pass,Slice(*sample,"PP_pass"),ProjWData(*sample,*data));
TCanvas *c1 = new TCanvas();
c1->cd(); xframeSB_PP_pass->Draw();
c1->SaveAs("c1.pdf");
RooPlot* xframeSB_PP_fail = pObs->frame(Title("SBhypo_PP_fail"));
data->plotOn(xframeSB_PP_fail,Cut("sample==sample::PP_fail"));
RooAbsPdf *pdfSB_PP_fail = sbHypo.GetPdf();
pdfSB_PP_fail->plotOn(xframeSB_PP_fail,Slice(*sample,"PP_fail"),ProjWData(*sample,*data));
TCanvas *c2 = new TCanvas();
c2->cd(); xframeSB_PP_fail->Draw();
c2->SaveAs("c1.pdf");
RooPlot* xframeB_PbPb_pass = pObs->frame(Title("SBhypo_PbPb_pass"));
data->plotOn(xframeB_PbPb_pass,Cut("sample==sample::PbPb_pass"));
RooAbsPdf *pdfB_PbPb_pass = sbHypo.GetPdf();
pdfB_PbPb_pass->plotOn(xframeB_PbPb_pass,Slice(*sample,"PbPb_pass"),ProjWData(*sample,*data));
TCanvas *c3 = new TCanvas();
c3->cd(); xframeB_PbPb_pass->Draw();
c3->SetLogy();
c3->SaveAs("c2.pdf");
RooPlot* xframeB_PbPb_fail = pObs->frame(Title("SBhypo_PbPb_fail"));
data->plotOn(xframeB_PbPb_fail,Cut("sample==sample::PbPb_fail"));
RooAbsPdf *pdfB_PbPb_fail = sbHypo.GetPdf();
pdfB_PbPb_fail->plotOn(xframeB_PbPb_fail,Slice(*sample,"PbPb_fail"),ProjWData(*sample,*data));
TCanvas *c4 = new TCanvas();
c4->cd(); xframeB_PbPb_fail->Draw();
c4->SetLogy();
c4->SaveAs("c2.pdf");
}
delete pNll;
delete pPoiAndNuisance;
ws->import( sbHypo );
/////////////////////////////////////////////////////////////////////
RooStats::ModelConfig bHypo = sbHypo;
bHypo.SetName("BHypo");
bHypo.SetWorkspace(*ws);
pNll = bHypo.GetPdf()->createNLL( *data,NumCPU(nCPU) );
// RooMinuit(*pNll).migrad(); // minimize likelihood wrt all parameters before making plots
RooArgSet poiAndGlobalObs("poiAndGlobalObs");
poiAndGlobalObs.add( poi );
poiAndGlobalObs.add( globalObs );
RooAbsReal * pProfile = pNll->createProfile( poiAndGlobalObs ); // do not profile POI and global observables
((RooRealVar *)poi.first())->setVal( 0 ); // set RFrac2Svs1S_PbPbvsPP=0 here
pProfile->getVal(); // this will do fit and set nuisance parameters to profiled values
pPoiAndNuisance = new RooArgSet( "poiAndNuisance" );
pPoiAndNuisance->add( nuis );
pPoiAndNuisance->add( poi );
bHypo.SetSnapshot(*pPoiAndNuisance);
delete pNll;
delete pPoiAndNuisance;
// import model config into workspace
bHypo.SetWorkspace(*ws);
ws->import( bHypo );
/////////////////////////////////////////////////////////////////////
ws->Print();
bHypo.Print();
sbHypo.Print();
// save workspace to file
string mainDIR = gSystem->ExpandPathName(gSystem->pwd());
string wsDIR = mainDIR + "/CombinedWorkspaces/";
string ssubDirName="";
if (subDirName) ssubDirName.append(subDirName);
string subDIR = wsDIR + ssubDirName;
void * dirp = gSystem->OpenDirectory(wsDIR.c_str());
if (dirp) gSystem->FreeDirectory(dirp);
else gSystem->mkdir(wsDIR.c_str(), kTRUE);
void * dirq = gSystem->OpenDirectory(subDIR.c_str());
if (dirq) gSystem->FreeDirectory(dirq);
else gSystem->mkdir(subDIR.c_str(), kTRUE);
const char* saveName = Form("%s/%s",subDIR.c_str(),nameOut.Data());
ws->writeToFile(saveName);
}
Int_t Tprime::SetParameterPoints( std::string sbModelName,
std::string bModelName ) {
//
// Fit the data with S+B model.
// Make a snapshot of the S+B parameter point.
// Profile with POI=0.
// Make a snapshot of the B parameter point
// (B model is the S+B model with POI=0
//
Double_t poi_value_for_b_model = 0.0;
// get S+B model config from workspace
RooStats::ModelConfig * pSbModel = (RooStats::ModelConfig *)pWs->obj(sbModelName.c_str());
pSbModel->SetWorkspace(*pWs);
// get parameter of interest set
const RooArgSet * poi = pSbModel->GetParametersOfInterest();
// get B model config from workspace
RooStats::ModelConfig * pBModel = (RooStats::ModelConfig *)pWs->obj(bModelName.c_str());
pBModel->SetWorkspace(*pWs);
// make sure that data has been loaded
if (!data) return -1;
// find parameter point for global maximum with the S+B model,
// with conditional MLEs for nuisance parameters
// and save the parameter point snapshot in the Workspace
RooAbsReal * nll = pSbModel->GetPdf()->createNLL(*data);
RooAbsReal * profile = nll->createProfile(RooArgSet());
profile->getVal(); // this will do fit and set POI and nuisance parameters to fitted values
RooArgSet * poiAndNuisance = new RooArgSet();
if(pSbModel->GetNuisanceParameters())
poiAndNuisance->add(*pSbModel->GetNuisanceParameters());
poiAndNuisance->add(*pSbModel->GetParametersOfInterest());
pWs->defineSet("SPlusBModelParameters", *poiAndNuisance);
pWs->saveSnapshot("SPlusBFitParameters",*poiAndNuisance);
pSbModel->SetSnapshot(*poi);
RooArgSet * sbModelFitParams = (RooArgSet *)poiAndNuisance->snapshot();
cout << "\nWill save these parameter points that correspond to the fit to data" << endl;
sbModelFitParams->Print("v");
delete profile;
delete nll;
delete poiAndNuisance;
delete sbModelFitParams;
//
// Find a parameter point for generating pseudo-data
// with the background-only data.
// Save the parameter point snapshot in the Workspace
nll = pBModel->GetPdf()->createNLL(*data);
profile = nll->createProfile(*poi);
((RooRealVar *)poi->first())->setVal(poi_value_for_b_model);
profile->getVal(); // this will do fit and set nuisance parameters to profiled values
poiAndNuisance = new RooArgSet();
if(pBModel->GetNuisanceParameters())
poiAndNuisance->add(*pBModel->GetNuisanceParameters());
poiAndNuisance->add(*pBModel->GetParametersOfInterest());
pWs->defineSet("parameterPointToGenerateData", *poiAndNuisance);
pWs->saveSnapshot("parametersToGenerateData",*poiAndNuisance);
pBModel->SetSnapshot(*poi);
RooArgSet * paramsToGenerateData = (RooArgSet *)poiAndNuisance->snapshot();
cout << "\nShould use these parameter points to generate pseudo data for bkg only" << endl;
paramsToGenerateData->Print("v");
delete profile;
delete nll;
delete poiAndNuisance;
delete paramsToGenerateData;
return 0;
}