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1 #ifndef ALITRDPIDREFMAKERNN_H
2 #define ALITRDPIDREFMAKERNN_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4  * See cxx source for full Copyright notice                               */
5
6 /* $Id: AliTRDpidRefMakerNN.h 27496 2008-07-22 08:35:45Z cblume $ */
7
8 //////////////////////////////////////////////////////
9 //
10 // Task to build PID reference tree for the training
11 // of neural networs for the TRD PID
12 //
13 // Authors: Alex Wilk    <wilka@uni-muenster.de>
14 //          Markus Heide <mheide@uni-muenster.de>
15 //
16 ///////////////////////////////////////////////////////
17
18 #ifndef ALITRDPIDREFMAKER_H
19 #include "AliTRDpidRefMaker.h"
20 #endif
21 #ifndef ALITRDCALPID_H
22 #include "AliTRDCalPID.h"
23 #endif
24
25 class TEventList;
26 class TMultiLayerPerceptron;
27 class AliTRDpidRefMakerNN : public AliTRDpidRefMaker
28 {
29
30 public:
31   enum ETRDpidRefMakerNNgraph {
32     kGraphTrain = 1
33     ,kGraphTest = 2
34   };
35
36   enum ETRDpidRefMakerNNmoni {
37     kMoniTrain = 50
38   };
39
40   enum ETRDpidRefMakerNNsteer{
41     kMaxStat    = 20000 // maximum statistics/PID bin
42    ,kMinStat    = 50     // minimum statistics/PID bin
43   };
44   AliTRDpidRefMakerNN();
45   AliTRDpidRefMakerNN(const char *n);
46   virtual ~AliTRDpidRefMakerNN();
47   
48   Int_t   GetEpochs() const {return fEpochs;};
49   Int_t   GetMinTrain() const {return fMinTrain;};
50   Int_t   GetTrainMomBin() const {return fTrainMomBin;};
51
52   Bool_t  PostProcess();
53
54   void    SetEpochs(Int_t epochs) {fEpochs = epochs;};
55   void    SetMinTrain(Int_t mintrain) {fMinTrain = mintrain;};
56   void    SetTrainMomBin(Int_t trainmombin) {fTrainMomBin = trainmombin;};
57   void    SetDate(Int_t date) {fDate = date;};
58   void    SetDoTraining(Bool_t train) {fDoTraining = train;};
59   void    SetContinueTraining(Bool_t continTrain) {fContinueTraining = continTrain;};
60   void    SetTrainPath(Int_t path) {fTrainPath = path;};
61   Bool_t  LoadFile(const Char_t *InFileNN);
62   void    SetScaledEdx(Float_t s) {fScale = s;};
63
64   Bool_t  MakeTrainingSample();                     // convert AnalysisResults.root to training file
65   void    MakeTrainingLists(Int_t mombin = 0);      // build the training and the test list
66   void    MonitorTraining(Int_t mombin);            // monitor training process
67
68 protected:
69   void MakeRefs(Int_t mombin);                         // train the neural networks for a given momentum bin
70
71 private:
72   AliTRDpidRefMakerNN(const AliTRDpidRefMakerNN&);              // not implemented
73   AliTRDpidRefMakerNN& operator=(const AliTRDpidRefMakerNN&);   // not implemented
74   void    MakeTrainTestTrees();
75
76   TEventList *fTrain[AliTRDCalPID::kNMom];          // Training list for each momentum
77   TEventList *fTest[AliTRDCalPID::kNMom];           // Test list for each momentum
78   TMultiLayerPerceptron *fNet; // artificial neural network
79
80   Int_t         fTrainMomBin;              // momentum bin for the training
81   Int_t         fEpochs;                   // Number of epochs for the training of the NNs
82   Int_t         fMinTrain;                 // minimum of events needed for training
83   Int_t         fDate;                     // date stamp for training of the NNs
84   Bool_t        fDoTraining;               // checks if training will be done
85   Bool_t        fContinueTraining;         // checks if training from an older run should be continued
86   Int_t         fTrainPath;                // sets the path for continuing the training
87
88   Float_t       fScale;                    // scaling factor
89   Int_t         fLy;                       // TRD layer
90   Int_t         fNtrkl;                    // No. tracklets
91   TTree         *fTrainData[AliTRDCalPID::kNMom];//Tree for reference data for all momentum bins 
92   TFile         *fRef;                     //file containing reference data
93
94   ClassDef(AliTRDpidRefMakerNN, 3);        // TRD reference  maker for NN
95 };
96
97 #endif