/* History of cvs commits:
*
* $Log$
+ * Revision 1.10 2007/03/09 14:34:11 gustavo
+ * Correct probability calculation, added missing initialization of data members
+ *
+ * Revision 1.9 2007/02/20 20:17:43 hristov
+ * Corrected array size, removed warnings (icc)
+ *
* Revision 1.8 2006/12/19 08:49:35 gustavo
* New PID class for EMCAL, bayesian analysis done with ESD data, PID information filled when calling AliEMCALPID in AliEMCALReconstructor::FillESD()
*
ClassImp(AliEMCALPID)
-AliEMCALPID::AliEMCALPID()
+//______________________________________________
+ AliEMCALPID::AliEMCALPID():
+ fPrintInfo(kFALSE), fProbGamma(0.),fProbPiZero(0.),fProbHadron(0.),fReconstructor(kFALSE)
{
-//
-// Constructor.
-// Initialize all constant values which have to be used
-// during PID algorithm execution
-//
-
- // set flag for printing to FALSE by default
- fPrintInfo = kFALSE;
-
- // as a first step, all array elements are initialized to 0.0
- Int_t i, j;
- for (i = 0; i < 6; i++) {
- for (j = 0; j < 6; j++) {
- fGamma[i][j] = fHadron[i][j] = fPiZero5to10[i][j] = fPiZero10to60[i][j] = 0.;
- }
- }
-
- // then, only the ones which must be not zero are initialized
- // while the others will remain to the value 0.0
-
- fGamma[0][0] = 0.038022;
- fGamma[0][1] = -0.0001883;
- fGamma[0][2] = 5.449e-06;
-
- fGamma[1][0] = 0.207313;
- fGamma[1][1] = -0.000978;
- fGamma[1][2] = 0.00001634;
-
- fGamma[2][0] = 0.043364;
- fGamma[2][1] = -0.0002048;
- fGamma[2][2] = 8.661e-06;
- fGamma[2][3] = -1.353e-07;
-
- fGamma[3][0] = 0.265004;
- fGamma[3][1] = 0.061298;
- fGamma[3][2] = -0.003203;
- fGamma[3][3] = 4.73e-05;
-
- fGamma[4][0] = 0.243579;
- fGamma[4][1] = -1.614e-05;
-
- fGamma[5][0] = 0.002942;
- fGamma[5][1] = -3.976e-05;
-
- fHadron[0][0] = 0.011945 / 3.;
- fHadron[0][1] = 0.000386 / 3.;
- fHadron[0][2] = -0.000014 / 3.;
- fHadron[0][3] = 1.336e-07 / 3.;
-
- fHadron[1][0] = 0.496544;
- fHadron[1][1] = -0.003226;
- fHadron[1][2] = 0.00001678;
-
- fHadron[2][0] = 0.144838;
- fHadron[2][1] = -0.002954;
- fHadron[2][2] = 0.00008754;
- fHadron[2][3] = -7.587e-07;
-
- fHadron[3][0] = 1.264461 / 7.;
- fHadron[3][1] = 0.002097 / 7.;
-
- fHadron[4][0] = 0.261950;
- fHadron[4][1] = -0.001078;
- fHadron[4][2] = 0.00003237;
- fHadron[4][3] = -3.241e-07;
- fHadron[4][4] = 0.;
- fHadron[4][5] = 0.;
- fHadron[5][0] = 0.010317;
- fHadron[5][1] = 0.;
- fHadron[5][2] = 0.;
- fHadron[5][3] = 0.;
- fHadron[5][4] = 0.;
- fHadron[5][5] = 0.;
-
- fPiZero5to10[0][0] = 0.009138;
- fPiZero5to10[0][1] = 0.0006377;
-
- fPiZero5to10[1][0] = 0.08;
-
- fPiZero5to10[2][0] = -0.061119;
- fPiZero5to10[2][1] = 0.019013;
-
- fPiZero5to10[3][0] = 0.2;
-
- fPiZero5to10[4][0] = 0.252044;
- fPiZero5to10[4][1] = -0.002315;
-
- fPiZero5to10[5][0] = 0.002942;
- fPiZero5to10[5][1] = -3.976e-05;
-
- fPiZero10to60[0][0] = 0.009138;
- fPiZero10to60[0][1] = 0.0006377;
-
- fPiZero10to60[1][0] = 1.272837;
- fPiZero10to60[1][1] = -0.069708;
- fPiZero10to60[1][2] = 0.001568;
- fPiZero10to60[1][3] = -1.162e-05;
-
- fPiZero10to60[2][0] = 0.139703;
- fPiZero10to60[2][1] = 0.003687;
- fPiZero10to60[2][2] = -0.000568;
- fPiZero10to60[2][3] = 1.498e-05;
- fPiZero10to60[2][4] = -1.174e-07;
-
- fPiZero10to60[3][0] = -0.826367;
- fPiZero10to60[3][1] = 0.096951;
- fPiZero10to60[3][2] = -0.002215;
- fPiZero10to60[3][3] = 2.523e-05;
-
- fPiZero10to60[4][0] = 0.249890;
- fPiZero10to60[4][1] = -0.000063;
-
- fPiZero10to60[5][0] = 0.002942;
- fPiZero10to60[5][1] = -3.976e-05;
-
- fPIDWeight[0] = -1;
- fPIDWeight[1] = -1;
- fPIDWeight[2] = -1;
- fReconstructor = kFALSE;
+ //
+ // Constructor.
+ // Initialize all constant values which have to be used
+ // during PID algorithm execution
+ //
+
+ // set flag for printing to FALSE by default
+ fPrintInfo = kFALSE;
+
+ // as a first step, all array elements are initialized to 0.0
+ Int_t i, j;
+ for (i = 0; i < 6; i++) {
+ for (j = 0; j < 6; j++) {
+ fGamma[i][j] = fHadron[i][j] = fPiZero5to10[i][j] = fPiZero10to60[i][j] = 0.;
+ }
+ }
+
+ // then, only the ones which must be not zero are initialized
+ // while the others will remain to the value 0.0
+
+ fGamma[0][0] = 0.038022;
+ fGamma[0][1] = -0.0001883;
+ fGamma[0][2] = 5.449e-06;
+
+ fGamma[1][0] = 0.207313;
+ fGamma[1][1] = -0.000978;
+ fGamma[1][2] = 0.00001634;
+
+ fGamma[2][0] = 0.043364;
+ fGamma[2][1] = -0.0002048;
+ fGamma[2][2] = 8.661e-06;
+ fGamma[2][3] = -1.353e-07;
+
+ fGamma[3][0] = 0.265004;
+ fGamma[3][1] = 0.061298;
+ fGamma[3][2] = -0.003203;
+ fGamma[3][3] = 4.73e-05;
+
+ fGamma[4][0] = 0.243579;
+ fGamma[4][1] = -1.614e-05;
+
+ fGamma[5][0] = 0.002942;
+ fGamma[5][1] = -3.976e-05;
+
+ fHadron[0][0] = 0.011945 / 3.;
+ fHadron[0][1] = 0.000386 / 3.;
+ fHadron[0][2] = -0.000014 / 3.;
+ fHadron[0][3] = 1.336e-07 / 3.;
+
+ fHadron[1][0] = 0.496544;
+ fHadron[1][1] = -0.003226;
+ fHadron[1][2] = 0.00001678;
+
+ fHadron[2][0] = 0.144838;
+ fHadron[2][1] = -0.002954;
+ fHadron[2][2] = 0.00008754;
+ fHadron[2][3] = -7.587e-07;
+
+ fHadron[3][0] = 1.264461 / 7.;
+ fHadron[3][1] = 0.002097 / 7.;
+
+ fHadron[4][0] = 0.261950;
+ fHadron[4][1] = -0.001078;
+ fHadron[4][2] = 0.00003237;
+ fHadron[4][3] = -3.241e-07;
+ fHadron[4][4] = 0.;
+ fHadron[4][5] = 0.;
+ fHadron[5][0] = 0.010317;
+ fHadron[5][1] = 0.;
+ fHadron[5][2] = 0.;
+ fHadron[5][3] = 0.;
+ fHadron[5][4] = 0.;
+ fHadron[5][5] = 0.;
+
+ fPiZero5to10[0][0] = 0.009138;
+ fPiZero5to10[0][1] = 0.0006377;
+
+ fPiZero5to10[1][0] = 0.08;
+
+ fPiZero5to10[2][0] = -0.061119;
+ fPiZero5to10[2][1] = 0.019013;
+
+ fPiZero5to10[3][0] = 0.2;
+
+ fPiZero5to10[4][0] = 0.252044;
+ fPiZero5to10[4][1] = -0.002315;
+
+ fPiZero5to10[5][0] = 0.002942;
+ fPiZero5to10[5][1] = -3.976e-05;
+
+ fPiZero10to60[0][0] = 0.009138;
+ fPiZero10to60[0][1] = 0.0006377;
+
+ fPiZero10to60[1][0] = 1.272837;
+ fPiZero10to60[1][1] = -0.069708;
+ fPiZero10to60[1][2] = 0.001568;
+ fPiZero10to60[1][3] = -1.162e-05;
+
+ fPiZero10to60[2][0] = 0.139703;
+ fPiZero10to60[2][1] = 0.003687;
+ fPiZero10to60[2][2] = -0.000568;
+ fPiZero10to60[2][3] = 1.498e-05;
+ fPiZero10to60[2][4] = -1.174e-07;
+
+ fPiZero10to60[3][0] = -0.826367;
+ fPiZero10to60[3][1] = 0.096951;
+ fPiZero10to60[3][2] = -0.002215;
+ fPiZero10to60[3][3] = 2.523e-05;
+
+ fPiZero10to60[4][0] = 0.249890;
+ fPiZero10to60[4][1] = -0.000063;
+
+ fPiZero10to60[5][0] = 0.002942;
+ fPiZero10to60[5][1] = -3.976e-05;
+
+ fPIDWeight[0] = -1;
+ fPIDWeight[1] = -1;
+ fPIDWeight[2] = -1;
+ fReconstructor = kFALSE;
}
-//
-//
+
+//______________________________________________
void AliEMCALPID::RunPID(AliESD *esd)
{
//
// but just gamma/PiO/Hadron
//
// trivial check against NULL object passed
-
+
if (esd == 0x0) {
- AliInfo("NULL ESD object passed!!" );
+ AliInfo("NULL ESD object passed !!" );
return ;
}
+
Int_t nClusters = esd->GetNumberOfEMCALClusters();
Int_t firstCluster = esd->GetFirstEMCALCluster();
Double_t energy, lambda0;
lambda0 = clust->GetM02();
// verify cluster type
Int_t clusterType= clust->GetClusterType();
- if (clusterType == AliESDCaloCluster::kClusterv1 && lambda0 != 0 && energy > 5 && energy < 1000) {
+ if (clusterType == AliESDCaloCluster::kClusterv1 && lambda0 != 0 && energy < 1000) {
+
+
// reject clusters with lambda0 = 0
- // reject clusters with energy < 5 GeV
+
+
ComputePID(energy, lambda0);
+
+
if (fPrintInfo) {
AliInfo("___________________________________________________");
AliInfo(Form( "Particle Energy = %f",energy));
AliInfo(Form( " kUnknown : %f", fPIDFinal[10] ));
AliInfo("___________________________________________________");
}
+
if(fReconstructor) // In case it is called during reconstruction.
clust->SetPid(fPIDFinal);
} // end if (clusterType...)
} // end for (iCluster...)
}
-//
-//
+
+//__________________________________________________________
void AliEMCALPID::ComputePID(Double_t energy, Double_t lambda0)
{
//
// This is the main command, which uses the distributions computed and parametrised,
// and gives the PID by the bayesian method.
//
- TArrayD paramDistribGamma = DistLambda0(energy, 1);
- TArrayD paramDistribPiZero = DistLambda0(energy, 2);
- TArrayD paramDistribHadron = DistLambda0(energy, 3);
-
- Bool_t norm = kFALSE;
-
- fProbGamma = TMath::Gaus(lambda0, paramDistribGamma[1], paramDistribGamma[2], norm) * paramDistribGamma[0];
- fProbGamma += TMath::Landau(lambda0, paramDistribGamma[4], paramDistribGamma[5], norm) * paramDistribGamma[3];
- fProbPiZero = TMath::Gaus(lambda0, paramDistribPiZero[1], paramDistribPiZero[2], norm) * paramDistribPiZero[0];
- fProbPiZero += TMath::Landau(lambda0, paramDistribPiZero[4], paramDistribPiZero[5], norm) * paramDistribPiZero[3];
- fProbHadron = TMath::Gaus(lambda0, paramDistribHadron[1], paramDistribHadron[2], norm) * paramDistribHadron[0];
- fProbHadron += TMath::Landau(lambda0, paramDistribHadron[4], paramDistribHadron[5], norm) * paramDistribHadron[3];
-
- // compute PID Weight
- fPIDWeight[0] = fProbGamma / (fProbGamma + fProbPiZero + fProbHadron);
- fPIDWeight[1] = fProbPiZero / (fProbGamma+fProbPiZero+fProbHadron);
- fPIDWeight[2] = fProbHadron / (fProbGamma+fProbPiZero+fProbHadron);
-
- SetPID(fPIDWeight[0], 0);
- SetPID(fPIDWeight[1], 1);
- SetPID(fPIDWeight[2], 2);
-
- // sortie ecran pid Weight only for control (= in english ???)
- if (fPrintInfo) {
- AliInfo(Form( "Energy in loop = %f", energy) );
- AliInfo(Form( "Lambda0 in loop = %f", lambda0) );
- AliInfo(Form( "fProbGamma in loop = %f", fProbGamma) );
- // AliInfo(Form( "fParametresDistribGamma[2] = %f", fParamDistribGamma[2]) );
- AliInfo(Form( "fProbaPiZero = %f", fProbPiZero ));
- AliInfo(Form( "fProbaHadron = %f", fProbHadron) );
- AliInfo(Form( "PIDWeight in loop = %f ||| %f ||| %f", fPIDWeight[0] , fPIDWeight[1], fPIDWeight[2]) );
- AliInfo(Form( "fGamma[2][2] = %f", fGamma[2][2] ));
- AliInfo("********************************************************" );
- }
-
- fPIDFinal[0] = fPIDWeight[0]/2;
- fPIDFinal[1] = fPIDWeight[2]/8;
- fPIDFinal[2] = fPIDWeight[2]/8;
- fPIDFinal[3] = fPIDWeight[2]/8;
- fPIDFinal[4] = fPIDWeight[2]/8;
- fPIDFinal[5] = fPIDWeight[0]/2;
- fPIDFinal[6] = fPIDWeight[1]/2;
- fPIDFinal[7] = fPIDWeight[2]/8;
- fPIDFinal[8] = fPIDWeight[2]/8;
- fPIDFinal[9] = fPIDWeight[2]/8;
- fPIDFinal[10] = fPIDWeight[2]/8;
+
+if (energy<5){energy =6;}
+
+
+ TArrayD paramDistribGamma = DistLambda0(energy, 1);
+ TArrayD paramDistribPiZero = DistLambda0(energy, 2);
+ TArrayD paramDistribHadron = DistLambda0(energy, 3);
+
+ Bool_t norm = kFALSE;
+
+ fProbGamma = TMath::Gaus(lambda0, paramDistribGamma[1], paramDistribGamma[2], norm) * paramDistribGamma[0];
+ fProbGamma += TMath::Landau(lambda0, paramDistribGamma[4], paramDistribGamma[5], norm) * paramDistribGamma[3];
+ fProbPiZero = TMath::Gaus(lambda0, paramDistribPiZero[1], paramDistribPiZero[2], norm) * paramDistribPiZero[0];
+ fProbPiZero += TMath::Landau(lambda0, paramDistribPiZero[4], paramDistribPiZero[5], norm) * paramDistribPiZero[3];
+ fProbHadron = TMath::Gaus(lambda0, paramDistribHadron[1], paramDistribHadron[2], norm) * paramDistribHadron[0];
+ fProbHadron += TMath::Landau(lambda0, paramDistribHadron[4], paramDistribHadron[5], norm) * paramDistribHadron[3];
+
+ // compute PID Weight
+ fPIDWeight[0] = fProbGamma / (fProbGamma + fProbPiZero + fProbHadron);
+ fPIDWeight[1] = fProbPiZero / (fProbGamma+fProbPiZero+fProbHadron);
+ fPIDWeight[2] = fProbHadron / (fProbGamma+fProbPiZero+fProbHadron);
+
+ SetPID(fPIDWeight[0], 0);
+ SetPID(fPIDWeight[1], 1);
+ SetPID(fPIDWeight[2], 2);
+
+ // sortie ecran pid Weight only for control (= in english ???)
+ if (fPrintInfo) {
+ AliInfo(Form( "Energy in loop = %f", energy) );
+ AliInfo(Form( "Lambda0 in loop = %f", lambda0) );
+ AliInfo(Form( "fProbGamma in loop = %f", fProbGamma) );
+ // AliInfo(Form( "fParametresDistribGamma[2] = %f", fParamDistribGamma[2]) );
+ AliInfo(Form( "fProbaPiZero = %f", fProbPiZero ));
+ AliInfo(Form( "fProbaHadron = %f", fProbHadron) );
+ AliInfo(Form( "PIDWeight in loop = %f ||| %f ||| %f", fPIDWeight[0] , fPIDWeight[1], fPIDWeight[2]) );
+ AliInfo(Form( "fGamma[2][2] = %f", fGamma[2][2] ));
+ AliInfo("********************************************************" );
+ }
+
+ fPIDFinal[0] = fPIDWeight[0]/2;
+ fPIDFinal[1] = fPIDWeight[2]/8;
+ fPIDFinal[2] = fPIDWeight[2]/8;
+ fPIDFinal[3] = fPIDWeight[2]/8;
+ fPIDFinal[4] = fPIDWeight[2]/8;
+ fPIDFinal[5] = fPIDWeight[0]/2;
+ fPIDFinal[6] = fPIDWeight[1] ;
+ fPIDFinal[7] = fPIDWeight[2]/8;
+ fPIDFinal[8] = fPIDWeight[2]/8;
+ fPIDFinal[9] = fPIDWeight[2]/8;
+ fPIDFinal[10] = fPIDWeight[2]/8;
}
-//
-//
+
+//________________________________________________________
TArrayD AliEMCALPID::DistLambda0(Double_t energy, Int_t type)
{
-//
-// Compute the values of the parametrised distributions using the data initialised before.
-//
- Double_t constGauss = 0., meanGauss = 0., sigmaGauss = 0.;
- Double_t constLandau=0., mpvLandau=0., sigmaLandau=0.;
- TArrayD distributionParam(6);
-
- switch (type) {
- case 1:
- constGauss = Polynomial(energy, fGamma[0]);
- meanGauss = Polynomial(energy, fGamma[1]);
- sigmaGauss = Polynomial(energy, fGamma[2]);
- constLandau = Polynomial(energy, fGamma[3]);
- mpvLandau = Polynomial(energy, fGamma[4]);
- sigmaLandau = Polynomial(energy, fGamma[5]);
- break;
- case 2:
- if (energy < 10) {
- constGauss = Polynomial(energy, fPiZero5to10[0]);
- meanGauss = Polynomial(energy, fPiZero5to10[1]);
- sigmaGauss = Polynomial(energy, fPiZero5to10[2]);
- constLandau = Polynomial(energy, fPiZero5to10[3]);
- mpvLandau = Polynomial(energy, fPiZero5to10[4]);
- sigmaLandau = Polynomial(energy, fPiZero5to10[5]);
- }
- else {
- constGauss = Polynomial(energy, fPiZero10to60[0]);
- meanGauss = Polynomial(energy, fPiZero10to60[1]);
- sigmaGauss = Polynomial(energy, fPiZero10to60[2]);
- constLandau = Polynomial(energy, fPiZero10to60[3]);
- mpvLandau = Polynomial(energy, fPiZero10to60[4]);
- sigmaLandau = Polynomial(energy, fPiZero10to60[5]);
- }
- break;
- case 3:
- constGauss = Polynomial(energy, fHadron[0]);
- meanGauss = Polynomial(energy, fHadron[1]);
- sigmaGauss = Polynomial(energy, fHadron[2]);
- constLandau = Polynomial(energy, fHadron[3]);
- mpvLandau = Polynomial(energy, fHadron[4]);
- sigmaLandau = Polynomial(energy, fHadron[5]);
- break;
- }
-
- distributionParam[0] = constGauss;
- distributionParam[1] = meanGauss;
- distributionParam[2] = sigmaGauss;
- distributionParam[3] = constLandau;
- distributionParam[4] = mpvLandau;
- distributionParam[5] = sigmaLandau;
-
- return distributionParam;
+ //
+ // Compute the values of the parametrised distributions using the data initialised before.
+ //
+ Double_t constGauss = 0., meanGauss = 0., sigmaGauss = 0.;
+ Double_t constLandau=0., mpvLandau=0., sigmaLandau=0.;
+ TArrayD distributionParam(6);
+
+ switch (type) {
+ case 1:
+ constGauss = Polynomial(energy, fGamma[0]);
+ meanGauss = Polynomial(energy, fGamma[1]);
+ sigmaGauss = Polynomial(energy, fGamma[2]);
+ constLandau = Polynomial(energy, fGamma[3]);
+ mpvLandau = Polynomial(energy, fGamma[4]);
+ sigmaLandau = Polynomial(energy, fGamma[5]);
+ break;
+ case 2:
+ if (energy < 10) {
+ constGauss = Polynomial(energy, fPiZero5to10[0]);
+ meanGauss = Polynomial(energy, fPiZero5to10[1]);
+ sigmaGauss = Polynomial(energy, fPiZero5to10[2]);
+ constLandau = Polynomial(energy, fPiZero5to10[3]);
+ mpvLandau = Polynomial(energy, fPiZero5to10[4]);
+ sigmaLandau = Polynomial(energy, fPiZero5to10[5]);
+ }
+ else {
+ constGauss = Polynomial(energy, fPiZero10to60[0]);
+ meanGauss = Polynomial(energy, fPiZero10to60[1]);
+ sigmaGauss = Polynomial(energy, fPiZero10to60[2]);
+ constLandau = Polynomial(energy, fPiZero10to60[3]);
+ mpvLandau = Polynomial(energy, fPiZero10to60[4]);
+ sigmaLandau = Polynomial(energy, fPiZero10to60[5]);
+ }
+ break;
+ case 3:
+ constGauss = Polynomial(energy, fHadron[0]);
+ meanGauss = Polynomial(energy, fHadron[1]);
+ sigmaGauss = Polynomial(energy, fHadron[2]);
+ constLandau = Polynomial(energy, fHadron[3]);
+ mpvLandau = Polynomial(energy, fHadron[4]);
+ sigmaLandau = Polynomial(energy, fHadron[5]);
+ break;
+ }
+
+ distributionParam[0] = constGauss;
+ distributionParam[1] = meanGauss;
+ distributionParam[2] = sigmaGauss;
+ distributionParam[3] = constLandau;
+ distributionParam[4] = mpvLandau;
+ distributionParam[5] = sigmaLandau;
+
+ return distributionParam;
}
-//
-//
+
+//_______________________________________________________
Double_t AliEMCALPID::Polynomial(Double_t x, Double_t *params)
{
-//
-// Compute a polynomial for a given value of 'x'
-// with the array of parameters passed as the second arg
-//
- Double_t y;
- y = params[0];
- y += params[1] * x;
- y += params[2] * x * x;
- y += params[3] * x * x * x;
- y += params[4] * x * x * x * x;
- y += params[5] * x * x * x * x * x;
-
- return y;
+ //
+ // Compute a polynomial for a given value of 'x'
+ // with the array of parameters passed as the second arg
+ //
+ Double_t y;
+ y = params[0];
+ y += params[1] * x;
+ y += params[2] * x * x;
+ y += params[3] * x * x * x;
+ y += params[4] * x * x * x * x;
+ y += params[5] * x * x * x * x * x;
+
+ return y;
}
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