STEERBase/AliTRDPIDReference.cxx
STEERBase/AliTRDPIDParams.cxx
STEERBase/AliTRDPIDResponseObject.cxx
+ STEERBase/AliTRDNDFast.cxx
STEERBase/AliTRDTKDInterpolator.cxx
STEERBase/AliPIDResponse.cxx
STEERBase/AliITSPIDResponse.cxx
}
//______________________________________________________________________________
-Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack, Double_t efficiencyLevel,Double_t centrality,AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const {
+Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack,Double_t efficiencyLevel,Double_t centrality,AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const {
+ // old function for compatibility
+ Int_t ntracklets=0;
+ return IdentifiedAsElectronTRD(vtrack,ntracklets,efficiencyLevel,centrality,PIDmethod);
+}
+
+//______________________________________________________________________________
+Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack, Int_t &ntracklets,Double_t efficiencyLevel,Double_t centrality,AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const {
//
// Check whether track is identified as electron under a given electron efficiency hypothesis
//
+ // ntracklets is the number of tracklets that has been used to calculate the PID signal
Double_t probs[AliPID::kSPECIES];
- ComputeTRDProbability(vtrack, AliPID::kSPECIES, probs,PIDmethod);
- Int_t ntracklets = vtrack->GetTRDntrackletsPID();
+ ntracklets =CalculateTRDResponse(vtrack,probs,PIDmethod);
+
// Take mean of the TRD momenta in the given tracklets
Float_t p = 0, trdmomenta[AliVTrack::kTRDnPlanes];
Int_t nmomenta = 0;
return kDetPidOk;
}
+
+Int_t AliPIDResponse::CalculateTRDResponse(const AliVTrack *track,Double_t p[],AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const
+{
+ // new function for backward compatibility
+ // returns number of tracklets PID
+
+ UInt_t TRDslicesForPID[2];
+ SetTRDSlices(TRDslicesForPID,PIDmethod);
+
+ Float_t mom[6]={0.};
+ Double_t dedx[48]={0.}; // Allocate space for the maximum number of TRD slices
+ Int_t nslices = TRDslicesForPID[1] - TRDslicesForPID[0] + 1;
+ AliDebug(1, Form("First Slice: %d, Last Slice: %d, Number of slices: %d", TRDslicesForPID[0], TRDslicesForPID[1], nslices));
+ for(UInt_t ilayer = 0; ilayer < 6; ilayer++){
+ mom[ilayer] = track->GetTRDmomentum(ilayer);
+ for(UInt_t islice = TRDslicesForPID[0]; islice <= TRDslicesForPID[1]; islice++){
+ dedx[ilayer*nslices+islice-TRDslicesForPID[0]] = track->GetTRDslice(ilayer, islice);
+ }
+ }
+
+ return fTRDResponse.GetResponse(nslices, dedx, mom, p,PIDmethod);
+
+}
//______________________________________________________________________________
-AliPIDResponse::EDetPidStatus AliPIDResponse::GetComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[],AliTRDPIDResponse::ETRDPIDMethod PIDmethod/*=AliTRDPIDResponse::kLQ1D*/) const
+AliPIDResponse::EDetPidStatus AliPIDResponse::GetComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[],AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const
{
//
// Compute PID probabilities for the TRD
const EDetPidStatus pidStatus=GetTRDPIDStatus(track);
if (pidStatus!=kDetPidOk) return pidStatus;
- UInt_t TRDslicesForPID[2];
- SetTRDSlices(TRDslicesForPID,PIDmethod);
-
- Float_t mom[6]={0.};
- Double_t dedx[48]={0.}; // Allocate space for the maximum number of TRD slices
- Int_t nslices = TRDslicesForPID[1] - TRDslicesForPID[0] + 1;
- AliDebug(1, Form("First Slice: %d, Last Slice: %d, Number of slices: %d", TRDslicesForPID[0], TRDslicesForPID[1], nslices));
- for(UInt_t ilayer = 0; ilayer < 6; ilayer++){
- mom[ilayer] = track->GetTRDmomentum(ilayer);
- for(UInt_t islice = TRDslicesForPID[0]; islice <= TRDslicesForPID[1]; islice++){
- dedx[ilayer*nslices+islice-TRDslicesForPID[0]] = track->GetTRDslice(ilayer, islice);
- }
- }
-
- fTRDResponse.GetResponse(nslices, dedx, mom, p,PIDmethod);
+ CalculateTRDResponse(track,p,PIDmethod);
+
return kDetPidOk;
}
virtual Float_t NumberOfSigmasEMCAL(const AliVParticle *track, AliPID::EParticleType type) const;
Bool_t IdentifiedAsElectronTRD(const AliVTrack *track, Double_t efficiencyLevel,Double_t centrality=-1,AliTRDPIDResponse::ETRDPIDMethod PIDmethod=AliTRDPIDResponse::kLQ1D) const;
+ Bool_t IdentifiedAsElectronTRD(const AliVTrack *track, Int_t &ntracklets, Double_t efficiencyLevel,Double_t centrality=-1,AliTRDPIDResponse::ETRDPIDMethod PIDmethod=AliTRDPIDResponse::kLQ1D) const;
+
// Signal delta
EDetPidStatus GetSignalDelta(EDetector detCode, const AliVParticle *track, AliPID::EParticleType type, Double_t &val, Bool_t ratio=kFALSE) const;
//unbuffered PID calculation
virtual Float_t GetNumberOfSigmasTOFold (const AliVParticle */*track*/, AliPID::EParticleType /*type*/) const {return 0;}
virtual Float_t GetSignalDeltaTOFold(const AliVParticle */*track*/, AliPID::EParticleType /*type*/, Bool_t /*ratio*/=kFALSE) const {return -9999.;}
-
+
+ Int_t CalculateTRDResponse(const AliVTrack *track, Double_t p[],AliTRDPIDResponse::ETRDPIDMethod PIDmethod) const;
EDetPidStatus GetComputeTRDProbability (const AliVTrack *track, Int_t nSpecies, Double_t p[],AliTRDPIDResponse::ETRDPIDMethod PIDmethod=AliTRDPIDResponse::kLQ1D) const;
EDetPidStatus GetTOFPIDStatus(const AliVTrack *track) const;
--- /dev/null
+// Author: Daniel.Lohner@cern.ch
+
+#include "AliTRDNDFast.h"
+#include "TCanvas.h"
+
+extern Double_t langaufunc(Double_t *x, Double_t *par) {
+
+ // needs protection, parameter [3]>0!!!!!
+ // needs protection, parameter [4]>0!!!!!
+
+ //Fit parameters:
+ //par[0]=Width (scale) parameter of Landau density
+ //par[1]=Most Probable (MP, location) parameter of Landau density
+ //par[2]=Total area (integral -inf to inf, normalization constant)
+ //par[3]=Width (sigma) of convoluted Gaussian function
+ //par[4]=Exponential Slope Parameter
+ //
+ //In the Landau distribution (represented by the CERNLIB approximation),
+ //the maximum is located at x=-0.22278298 with the location parameter=0.
+ //This shift is corrected within this function, so that the actual
+ //maximum is identical to the MP parameter.
+
+ // Numeric constants
+ Double_t invsq2pi = 0.3989422804014; // (2 pi)^(-1/2)
+ Double_t mpshift = -0.22278298; // Landau maximum location
+
+ // Control constants
+ Double_t np = 100.0; // number of convolution stpdf
+ Double_t sc = 5.0; // convolution extends to +-sc Gaussian sigmas
+
+ // Variables
+ Double_t xx;
+ Double_t mpc;
+ Double_t fland;
+ Double_t sum = 0.0;
+ Double_t xlow,xupp;
+ Double_t step;
+ Double_t i;
+
+ // MP shift correction
+ mpc = par[1] - mpshift * par[0];
+
+ // Range of convolution integral
+ xlow = x[0] - sc * par[3];
+ xupp = x[0] + sc * par[3];
+
+ if(xlow<0)xlow=0;
+ if(xupp<xlow)cout<<"ERROR: Convolution around Negative MPV"<<endl;
+
+ step = (xupp-xlow) / np;
+
+ // Convolution integral of Landau and Gaussian by sum
+ for(i=1.0; i<=np/2; i++) {
+ xx = xlow + (i-.5) * step;
+ fland = TMath::Landau(xx,mpc,par[0])*TMath::Exp(-par[4]*xx) / par[0]; // mpc taken out
+ sum += fland * TMath::Gaus(x[0],xx,par[3]);
+
+ xx = xupp - (i-.5) * step;
+ fland = TMath::Landau(xx,mpc,par[0])*TMath::Exp(-par[4]*xx) / par[0]; // mpc taken out
+ sum += fland * TMath::Gaus(x[0],xx,par[3]);
+ }
+
+ return (par[2] * step * sum * invsq2pi / par[3]);
+}
+
+
+
+ClassImp(AliTRDNDFast);
+
+AliTRDNDFast::AliTRDNDFast(): TObject(),
+ fNDim(0),
+ fTitle(""),
+ fFunc(NULL),
+ fHistos(NULL),
+ fPars()
+{
+ // default constructor
+}
+
+AliTRDNDFast::AliTRDNDFast(const char *name,Int_t ndim,Int_t nbins,Double_t xlow,Double_t xup): TObject(),
+fNDim(ndim),
+fTitle(name),
+fFunc(NULL),
+fHistos(NULL),
+fPars()
+{
+ Init();
+ for(Int_t idim=0;idim<fNDim;idim++){
+ fHistos[idim]=new TH1F(Form("%s_axis_%d",fTitle.Data(),idim),Form("%s_axis_%d",fTitle.Data(),idim),nbins,xlow,xup);
+ fHistos[idim]->SetDirectory(0);
+ }
+}
+
+AliTRDNDFast::AliTRDNDFast(const AliTRDNDFast &ref) : TObject(ref),
+fNDim(ref.fNDim),
+fTitle(ref.fTitle),
+fFunc(NULL),
+fHistos(NULL),
+fPars()
+{
+ Cleanup();
+ Init();
+ for(Int_t idim=0;idim<fNDim;idim++){
+ fHistos[idim]=(TH1F*)ref.fHistos[idim]->Clone(Form("%s_axis_%d",GetName(),idim));
+ fHistos[idim]->SetDirectory(0);
+ for(Int_t ipar=0;ipar<kNpar;ipar++)fPars[idim][ipar]=ref.fPars[idim][ipar];
+ }
+}
+
+AliTRDNDFast &AliTRDNDFast::operator=(const AliTRDNDFast &ref){
+ //
+ // Assignment operator
+ //
+ if(this != &ref){
+ TObject::operator=(ref);
+ fNDim=ref.fNDim;
+ fTitle=ref.fTitle;
+ fFunc = ref.fFunc;
+ fHistos=ref.fHistos;
+ for(Int_t idim=0;idim<fNDim;idim++){
+ for(Int_t ipar=0;ipar<kNpar;ipar++)fPars[idim][ipar]=ref.fPars[idim][ipar];
+ }
+ }
+ return *this;
+}
+
+AliTRDNDFast::~AliTRDNDFast(){
+ Cleanup();
+
+}
+
+void AliTRDNDFast::Init(){
+
+ for(Int_t ipar=0;ipar<kNpar;ipar++)fPars[ipar].Set(fNDim);
+ fFunc=new TF1*[fNDim];
+ fHistos=new TH1F*[fNDim];
+ for(Int_t idim=0;idim<fNDim;idim++){
+ fHistos[idim]=NULL;
+ for(Int_t ipar=0;ipar<kNpar;ipar++)fPars[ipar].SetAt(0,idim);
+ fFunc[idim]=NULL;
+ }
+}
+
+void AliTRDNDFast::Cleanup(){
+ if(fHistos){
+ for(Int_t idim=0;idim<fNDim;idim++){
+ if(fHistos[idim]){
+ delete fHistos[idim];
+ fHistos[idim]=NULL;
+ }
+ }
+ delete[] fHistos;
+ fHistos=NULL;
+ }
+ if(fPars){
+ for(Int_t ipar=0;ipar<kNpar;ipar++){
+ fPars[ipar].Reset();
+ }
+ }
+ if(fFunc){
+ for(Int_t idim=0;idim<fNDim;idim++){
+ if(fFunc[idim]){
+ delete fFunc[idim];
+ fFunc[idim]=NULL;
+ }
+ }
+ delete[] fFunc;
+ fFunc=NULL;
+ }
+}
+
+void AliTRDNDFast::PrintPars(){
+ for(Int_t idim=0;idim<fNDim;idim++){
+ for(Int_t ipar=0;ipar<kNpar;ipar++)cout<<idim<<" "<<ipar<<" "<<GetParam(idim,ipar)<<endl;
+ }
+}
+
+void AliTRDNDFast::ScaleLangauFun(TF1 *func,Double_t mpv){
+
+ Double_t start[kNpar],low[kNpar],high[kNpar];
+ for(Int_t ii=0;ii<kNpar;ii++){
+ start[ii]=func->GetParameter(ii);
+ func->GetParLimits(ii,low[ii],high[ii]);
+ }
+
+ Double_t scalefactor=mpv/start[1];
+
+ for(Int_t ii=0;ii<kNpar;ii++){
+ Double_t scale=1;
+ if(ii==0||ii==1||ii==3)scale=scalefactor;
+ if(ii==4)scale=1./scalefactor;
+ start[ii]*=scale;
+ low[ii]*=scale;
+ high[ii]*=scale;
+ func->SetParLimits(ii, low[ii], high[ii]);
+ }
+ func->SetParameters(start);
+}
+
+//---------------------------------------------------------------
+//---------------------------------------------------------------
+TF1 *AliTRDNDFast::GetLangauFun(TString funcname,Double_t range[2],Double_t scalefactor){
+
+ Double_t start[kNpar] = {120, 1000, 1, 100, 1e-5};
+ Double_t low[kNpar] = {10, 300, 0.01, 1, 0.};
+ Double_t high[kNpar] = {1000, 3000, 100, 1000, 1.};
+
+ TF1 *hlandauE=new TF1(funcname.Data(),langaufunc,0,range[1],kNpar);
+ hlandauE->SetParameters(start);
+ hlandauE->SetParNames("Width","MP","Area","GSigma","delta");
+ for (int i=0; i<kNpar; i++) {
+ hlandauE->SetParLimits(i, low[i], high[i]);
+ }
+
+ if(scalefactor!=1){ScaleLangauFun(hlandauE,scalefactor*start[1]);}
+
+ return hlandauE;
+}
+
+TF1 *AliTRDNDFast::FitLandau(TString name,TH1F *htemp,Double_t range[2],TString option){
+
+ TF1 *fitlandau1D=GetLangauFun(name,range);
+ TF1 fit("land","landau");
+ Double_t max=htemp->GetXaxis()->GetBinCenter(htemp->GetMaximumBin());
+ fit.SetParameter(1,max);
+ fit.SetParLimits(1,0,htemp->GetXaxis()->GetXmax());
+ fit.SetParameter(2,0.3*max); // MPV may never become negative!!!!!
+ htemp->Fit("land",option.Data(),"",range[0],range[1]);
+ ScaleLangauFun(fitlandau1D,fit.GetParameter(1));
+ htemp->Fit(fitlandau1D,option.Data(),"",range[0],range[1]); // range for references
+ return fitlandau1D;
+}
+
+void AliTRDNDFast::BuildHistos(){
+
+ for(Int_t idim=0;idim<fNDim;idim++){
+ fHistos[idim]->Reset();
+ // Fill Histo
+ Double_t pars[kNpar];
+ for(Int_t ipar=0;ipar<kNpar;ipar++)pars[ipar]=GetParam(idim,ipar);
+ // Also Fill overflow bins!!!
+ for(Int_t ii=0;ii<=fHistos[idim]->GetNbinsX()+1;ii++){
+ Double_t xval=fHistos[idim]->GetXaxis()->GetBinCenter(ii);
+ Double_t val=langaufunc(&xval,&pars[0]);
+ //Double_t val=fFunc[idim]->Eval(xval);
+ fHistos[idim]->SetBinContent(ii,val);
+ }
+ // Normalization
+ fHistos[idim]->Scale(1./fHistos[idim]->Integral(1,fHistos[idim]->GetNbinsX(),"width"));
+ }
+}
+
+void AliTRDNDFast::Build(Double_t **pars){
+ // pars[ndim][npar]
+ for(Int_t idim=0;idim<fNDim;idim++){
+ for(Int_t ipar=0;ipar<kNpar;ipar++){
+ fPars[ipar].SetAt(pars[idim][ipar],idim);
+ }
+ }
+ BuildHistos();
+}
+
+
+void AliTRDNDFast::Build(TH1F **hdEdx,TString path){
+
+ Double_t range[2];
+
+ TCanvas *CANV=new TCanvas("a","a");
+ if(fNDim==2)CANV->Divide(2,1);
+ if(fNDim==3)CANV->Divide(2,2);
+ if(fNDim>6)CANV->Divide(3,3);
+ // Fit and Extract Parameters
+ for(Int_t idim=0;idim<fNDim;idim++){
+ CANV->cd(idim+1);
+ gPad->SetLogy();
+ range[0]=hdEdx[idim]->GetXaxis()->GetXmin();
+ range[1]=hdEdx[idim]->GetXaxis()->GetXmax();
+ // Norm Histogram
+ hdEdx[idim]->Scale(1./hdEdx[idim]->Integral(1,hdEdx[idim]->GetNbinsX(),"width"));
+ // Fit Histogram
+ fFunc[idim]=FitLandau(Form("fit%d",idim),hdEdx[idim],range,"RMB0");
+ // Norm Landau
+ fFunc[idim]->SetParameter(2,fFunc[idim]->GetParameter(2)/fFunc[idim]->Integral(range[0],range[1]));
+ hdEdx[idim]->DrawCopy();
+ fFunc[idim]->DrawCopy("same");
+ // Set Pars
+ for(Int_t ipar=0;ipar<kNpar;ipar++)fPars[ipar].SetAt(fFunc[idim]->GetParameter(ipar),idim);
+ }
+ if(path!="")CANV->Print(Form("%s/%s_Build.pdf",path.Data(),fTitle.Data()));
+ delete CANV;
+
+ BuildHistos();
+}
+
+Double_t AliTRDNDFast::Eval(Double_t *point) const{
+ Double_t val=1;
+ for(Int_t idim=0;idim<fNDim;idim++){
+ Int_t bin=fHistos[idim]->GetXaxis()->FindBin(point[idim]);
+ val*=fHistos[idim]->GetBinContent(bin);
+ }
+ return val;
+}
+
+void AliTRDNDFast::Random(Double_t *point) const{
+ for(Int_t idim=0;idim<fNDim;idim++){
+ point[idim]=fHistos[idim]->GetRandom();
+ }
+}
+
+void AliTRDNDFast::Random(Double_t *point,AliTRDNDFast *nd0,AliTRDNDFast *nd1,Double_t w0,Double_t w1){
+ for(Int_t idim=0;idim<nd0->fNDim;idim++){
+ point[idim]=GetRandomInterpolation(nd0->fHistos[idim],nd1->fHistos[idim],w0,w1);
+ }
+}
+
+Int_t AliTRDNDFast::BinarySearchInterpolation(Int_t start,Int_t end,Double_t *a0,Double_t *a1,Double_t w0,Double_t w1,Double_t val){
+
+ if((end-start)==1)return start;
+ Int_t mid=Int_t((end+start)/2);
+ Double_t valmid=(w0*a0[mid]+w1*a1[mid])/(w0+w1);
+ if(val>=valmid)return BinarySearchInterpolation(mid,end,a0,a1,w0,w1,val);
+ return BinarySearchInterpolation(start,mid,a0,a1,w0,w1,val);
+}
+
+Double_t AliTRDNDFast::GetRandomInterpolation(TH1F *hist0,TH1F *hist1,Double_t w0,Double_t w1){
+
+ // Draw Random Variable
+ Double_t rand=gRandom->Rndm();
+
+ // Get Integral Arrays
+ Double_t *integral0=hist0->GetIntegral();
+ Double_t *integral1=hist1->GetIntegral();
+
+ Int_t nbinsX=hist0->GetNbinsX();
+
+ Int_t ibin=BinarySearchInterpolation(1,nbinsX+1,integral0,integral1,w0,w1,rand);
+ return hist0->GetXaxis()->GetBinCenter(ibin);
+}
+
+
+
--- /dev/null
+// Author: Daniel.Lohner@cern.ch
+
+#ifndef ALIROOT_AliTRDNDFast
+#define ALIROOT_AliTRDNDFast
+
+#ifndef ROOT_TH1
+#include "TH1F.h"
+#endif
+#ifndef ROOT_TArrayF
+#include "TArrayF.h"
+#endif
+#ifndef ROOT_TF2
+#include "TF1.h"
+#endif
+#ifndef ROOT_TMath
+#include "TMath.h"
+#endif
+#ifndef ROOT_TRandom
+#include "TRandom.h"
+#endif
+
+using namespace std;
+
+extern Double_t langaufun(Double_t *x,Double_t *par);
+
+class AliTRDNDFast : public TObject {
+
+public:
+ static const Int_t kNpar = 5;
+
+ AliTRDNDFast();
+ AliTRDNDFast(const char *name,Int_t ndim,Int_t nbins,Double_t xlow,Double_t xup);
+ AliTRDNDFast(const AliTRDNDFast&);
+ AliTRDNDFast &operator=(const AliTRDNDFast &ref);
+ virtual ~AliTRDNDFast();
+
+ TF1 *FitLandau(TString name,TH1F *htemp,Double_t range[2],TString option);
+
+ void Build(TH1F **hdEdx,TString path="");
+ void Build(Double_t **pars);
+ Double_t Eval(Double_t *point) const;
+ void Random(Double_t *point) const;
+ Int_t GetNDim(){return fNDim;};
+ Double_t GetParam(Int_t dim,Int_t par){if((dim>=0)&&(dim<fNDim)&&(par>=0)&&(par<kNpar)){return fPars[par].GetAt(dim);}else{return 0;}};
+ void PrintPars();
+ static void Random(Double_t *point,AliTRDNDFast *nd0,AliTRDNDFast *nd1,Double_t w0,Double_t w1);
+
+private:
+
+ void ScaleLangauFun(TF1 *func,Double_t mpv);
+ TF1 *GetLangauFun(TString funcname,Double_t range[2],Double_t scalefactor=1);
+ void BuildHistos();
+ void Init();
+ void Cleanup();
+
+ static Int_t BinarySearchInterpolation(Int_t start,Int_t end,Double_t *a0,Double_t *a1,Double_t w0,Double_t w1,Double_t val);
+ static Double_t GetRandomInterpolation(TH1F *hist0,TH1F *hist1,Double_t w0,Double_t w1);
+
+ Int_t fNDim; // Dimensions
+ TString fTitle; //title
+ TF1 **fFunc; //! functions, do not store
+ TH1F **fHistos; //[fNDim] Histograms
+ TArrayF fPars[kNpar]; // parameters
+
+ ClassDef(AliTRDNDFast,1) //Fast TRD ND class
+};
+
+#endif
break;
}
}
+ if(!tmp){
+ AliDebug(10,"Using default centrality class");
+ return FindCentrality(-1);
+ }
return tmp;
}
#include "AliTRDPIDResponseObject.h"
#include "AliTRDPIDResponse.h"
-#include "AliTRDTKDInterpolator.h"
+//#include "AliTRDTKDInterpolator.h"
+#include "AliTRDNDFast.h"
ClassImp(AliTRDPIDResponse)
}
//____________________________________________________________
-Bool_t AliTRDPIDResponse::GetResponse(Int_t n, const Double_t * const dedx, const Float_t * const p, Double_t prob[AliPID::kSPECIES],ETRDPIDMethod PIDmethod,Bool_t kNorm) const
+Int_t AliTRDPIDResponse::GetResponse(Int_t n, const Double_t * const dedx, const Float_t * const p, Double_t prob[AliPID::kSPECIES],ETRDPIDMethod PIDmethod,Bool_t kNorm) const
{
//
// Calculate TRD likelihood values for the track based on dedx and
// kNorm - switch to normalize probabilities to 1. By default true. If false return not normalized prob.
//
// Return value
- // true if calculation success
+ // number of tracklets used for PID, 0 if no PID
//
AliDebug(3,Form(" Response for PID method: %d",PIDmethod));
if(!fkPIDResponseObject){
AliDebug(3,"Missing reference data. PID calculation not possible.");
- return kFALSE;
+ return 0;
}
for(Int_t is(AliPID::kSPECIES); is--;) prob[is]=.2;
Double_t prLayer[AliPID::kSPECIES];
Double_t dE[10], s(0.);
+ Int_t ntrackletsPID=0;
for(Int_t il(kNlayer); il--;){
memset(prLayer, 0, AliPID::kSPECIES*sizeof(Double_t));
if(!CookdEdx(n, &dedx[il*n], &dE[0],PIDmethod)) continue;
-
- s=0.;
+ s=0.;
Bool_t filled=kTRUE;
for(Int_t is(AliPID::kSPECIES); is--;){
- if((PIDmethod==kLQ2D)&&(!(is==0||is==2)))continue;
+ //if((PIDmethod==kLQ2D)&&(!(is==0||is==2)))continue;
if((dE[0] > 0.) && (p[il] > 0.)) prLayer[is] = GetProbabilitySingleLayer(is, p[il], &dE[0],PIDmethod);
AliDebug(3, Form("Probability for Species %d in Layer %d: %e", is, il, prLayer[is]));
if(prLayer[is]<1.e-30){
if(kNorm) prLayer[is] /= s;
prob[is] *= prLayer[is];
}
+ ntrackletsPID++;
}
- if(!kNorm) return kTRUE;
+ if(!kNorm) return ntrackletsPID;
s=0.;
for(Int_t is(AliPID::kSPECIES); is--;) s+=prob[is];
if(s<1.e-30){
AliDebug(2, "Null total prob.");
- return kFALSE;
+ return 0;
}
for(Int_t is(AliPID::kSPECIES); is--;) prob[is]/=s;
- return kTRUE;
+ return ntrackletsPID;
}
//____________________________________________________________
AliDebug(1, Form("Make Probability for Species %d with Momentum %f", species, plocal));
Double_t probLayer = 0.;
+
Float_t pLower, pUpper;
- switch(PIDmethod){
- case kNN: // NN
+ AliTRDNDFast *refUpper = dynamic_cast<AliTRDNDFast *>(fkPIDResponseObject->GetUpperReference((AliPID::EParticleType)species, plocal, pUpper,PIDmethod)),
+ *refLower = dynamic_cast<AliTRDNDFast *>(fkPIDResponseObject->GetLowerReference((AliPID::EParticleType)species, plocal, pLower,PIDmethod));
+
+ // Do Interpolation exept for underflow and overflow
+ if(refLower && refUpper){
+ Double_t probLower = refLower->Eval(dEdx);
+ Double_t probUpper = refUpper->Eval(dEdx);
+
+ probLayer = probLower + (probUpper - probLower)/(pUpper-pLower) * (plocal - pLower);
+ } else if(refLower){
+ // underflow
+ probLayer = refLower->Eval(dEdx);
+ } else if(refUpper){
+ // overflow
+ probLayer = refUpper->Eval(dEdx);
+ } else {
+ AliError("No references available");
+ }
+ AliDebug(1, Form("Eval 1D dEdx %f Probability %e", dEdx[0],probLayer));
+
+ return probLayer;
+
+/* old implementation
+
+switch(PIDmethod){
+case kNN: // NN
break;
case kLQ2D: // 2D LQ
{
Double_t point[kNslicesLQ2D];
for(Int_t idim=0;idim<kNslicesLQ2D;idim++){point[idim]=dEdx[idim];}
- AliTRDTKDInterpolator *refLower = dynamic_cast<AliTRDTKDInterpolator*>(fkPIDResponseObject->GetLowerReference((AliPID::EParticleType)species, plocal, pLower,kLQ2D));
-
- if(refLower){
+ AliTRDTKDInterpolator *refUpper = dynamic_cast<AliTRDTKDInterpolator *>(fkPIDResponseObject->GetUpperReference((AliPID::EParticleType)species, plocal, pUpper,kLQ2D)),
+ *refLower = dynamic_cast<AliTRDTKDInterpolator *>(fkPIDResponseObject->GetLowerReference((AliPID::EParticleType)species, plocal, pLower,kLQ2D));
+ // Do Interpolation exept for underflow and overflow
+ if(refLower && refUpper){
+ Double_t probLower=0,probUpper=0;
+ refLower->Eval(point,probLower,error);
+ refUpper->Eval(point,probUpper,error);
+ probLayer = probLower + (probUpper - probLower)/(pUpper-pLower) * (plocal - pLower);
+ } else if(refLower){
+ // underflow
refLower->Eval(point,probLayer,error);
- }
- else {
+ } else if(refUpper){
+ // overflow
+ refUpper->Eval(point,probLayer,error);
+ } else {
AliError("No references available");
}
AliDebug(2,Form("Eval 2D Q0 %f Q1 %f P %e Err %e",point[0],point[1],probLayer,error));
break;
default:
break;
- }
- return probLayer;
+ }
+ return probLayer;
+ */
+
}
//____________________________________________________________
out[0]=0;
out[1]=0;
for(Int_t islice = 0; islice < nSlice; islice++){
+ if(in[islice]<=0){out[0]=0;out[1]=0;return kFALSE;} // Require that all slices are filled
if(islice<fkPIDResponseObject->GetNSlicesQ0())out[0]+= in[islice];
else out[1]+= in[islice];
}
+ // normalize signal to number of slices
+ out[0]*=1./Double_t(fkPIDResponseObject->GetNSlicesQ0());
+ out[1]*=1./Double_t(nSlice-fkPIDResponseObject->GetNSlicesQ0());
if(out[0] < 1e-6) return kFALSE;
AliDebug(3,Form("CookdEdx Q0 %f Q1 %f",out[0],out[1]));
break;
out[0]= 0.;
for(Int_t islice = 0; islice < nSlice; islice++)
if(in[islice] > 0) out[0] += in[islice] * fGainNormalisationFactor; // Protect against negative values for slices having no dE/dx information
+ out[0]*=1./Double_t(nSlice);
if(out[0] < 1e-6) return kFALSE;
AliDebug(3,Form("CookdEdx dEdx %f",out[0]));
break;
};
enum ETRDPIDResponseDef {
kNlayer = 6
- ,kNPBins = 6
+ ,kNPBins = 6
};
enum ETRDPIDMethod {
kNN = 0,
};
enum ETRDNslices {
kNslicesLQ1D = 1,
- kNslicesLQ2D = 2,
- kNslicesNN = 7
+ kNslicesLQ2D = 2,
+ kNslicesNN = 7
};
AliTRDPIDResponse();
AliTRDPIDResponse(const AliTRDPIDResponse &ref);
AliTRDPIDResponse& operator=(const AliTRDPIDResponse &ref);
~AliTRDPIDResponse();
- Bool_t GetResponse(Int_t n, const Double_t * const dedx, const Float_t * const p, Double_t prob[AliPID::kSPECIES],ETRDPIDMethod PIDmethod=kLQ1D, Bool_t kNorm=kTRUE) const;
+ Int_t GetResponse(Int_t n, const Double_t * const dedx, const Float_t * const p, Double_t prob[AliPID::kSPECIES],ETRDPIDMethod PIDmethod=kLQ1D, Bool_t kNorm=kTRUE) const;
inline ETRDNslices GetNumberOfSlices(ETRDPIDMethod PIDmethod=kLQ1D) const;
Bool_t IsOwner() const {return TestBit(kIsOwner);}
if(fPIDParams[method]){
return fPIDParams[method]->GetThresholdParameters(ntracklets,efficiency,params,centrality);
}
+ AliError("TRD Threshold Container does not exist");
return kFALSE;
}
#pragma link C++ class AliTRDPIDParams::AliTRDPIDCentrality+;
/* #endif */
#pragma link C++ class AliTRDPIDResponseObject+;
+#pragma link C++ class AliTRDNDFast+;
#pragma link C++ class AliTRDTKDInterpolator+;
#pragma link C++ class AliTRDTKDInterpolator::AliTRDTKDNodeInfo+;
#pragma link C++ class AliITSPidParams+;
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff