Logo ROOT   6.08/07
Reference Guide
HistFactorySimultaneous.cxx
Go to the documentation of this file.
1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * @(#)root/roofitcore:$Id$
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 
17 //////////////////////////////////////////////////////////////////////////////
18 //
19 // BEGIN_HTML
20 // RooSimultaneous facilitates simultaneous fitting of multiple PDFs
21 // to subsets of a given dataset.
22 // <p>
23 // The class takes an index category, which is interpreted as
24 // the data subset indicator, and a list of PDFs, each associated
25 // with a state of the index category. RooSimultaneous always returns
26 // the value of the PDF that is associated with the current value
27 // of the index category
28 // <p>
29 // Extended likelihood fitting is supported if all components support
30 // extended likelihood mode. The expected number of events by a RooSimultaneous
31 // is that of the component p.d.f. selected by the index category
32 // END_HTML
33 //
34 
35 
36 #include "RooNLLVar.h"
37 
40 
41 using namespace std ;
42 
44 ;
45 
46 
47 ////////////////////////////////////////////////////////////////////////////////
48 
50  RooAbsCategoryLValue& inIndexCat) :
51  RooSimultaneous(name, title, inIndexCat ) {}
52 
53 
54 ////////////////////////////////////////////////////////////////////////////////
55 
57  const RooArgList& inPdfList, RooAbsCategoryLValue& inIndexCat) :
58  RooSimultaneous(name, title, inPdfList, inIndexCat) {}
59 
60 
61 ////////////////////////////////////////////////////////////////////////////////
62 
64  map<string,RooAbsPdf*> pdfMap, RooAbsCategoryLValue& inIndexCat) :
65  RooSimultaneous(name, title, pdfMap, inIndexCat) {}
66 
67 
68 ////////////////////////////////////////////////////////////////////////////////
69 
71  RooSimultaneous(other, name) {}
72 
73 ////////////////////////////////////////////////////////////////////////////////
74 
76  RooSimultaneous(other, name) {}
77 
78 ////////////////////////////////////////////////////////////////////////////////
79 /// Destructor
80 
82 {
83 }
84 
85 
86 ////////////////////////////////////////////////////////////////////////////////
87 
89  const RooCmdArg& arg1, const RooCmdArg& arg2,
90  const RooCmdArg& arg3, const RooCmdArg& arg4,
91  const RooCmdArg& arg5, const RooCmdArg& arg6,
92  const RooCmdArg& arg7, const RooCmdArg& arg8) {
93  // Probably not necessary because createNLL is virtual...
94 
96  l.Add((TObject*)&arg1) ; l.Add((TObject*)&arg2) ;
97  l.Add((TObject*)&arg3) ; l.Add((TObject*)&arg4) ;
98  l.Add((TObject*)&arg5) ; l.Add((TObject*)&arg6) ;
99  l.Add((TObject*)&arg7) ; l.Add((TObject*)&arg8) ;
100  return createNLL(data,l) ;
101 
102 }
103 
104 
105 //_____________________________________________________________________________
106 
108 
109  // We want to overload the method createNLL so it return
110  // a RooBarlow-Beeston NLL function, which can be used
111  // in HistFactory to minimize statistical uncertainty analytically
112  //
113  // The only problem is one of ownership
114  // This HistFactorySimultaneous and the RooAbsData& data must
115  // exist for as long as the RooBarlowBeestonLL does
116  //
117  // This could be solved if we instead refer to the cloned
118  // pdf's and data set in the nll that we create here, but
119  // it's unclear how to do so
120  //
121  // Also, check for ownership/memory issue with the newly created nll
122  // and whether RooBarlowBeestonLL owns it, etc
123 
124  // Create a standard nll
125  RooNLLVar* nll = (RooNLLVar*) RooSimultaneous::createNLL( data, cmdList );
126 
127  RooBarlowBeestonLL* bbnll = new RooBarlowBeestonLL("bbnll", "bbnll", *nll); //, *observables);
128  bbnll->setPdf( this );
129  bbnll->setDataset( &data );
130  bbnll->initializeBarlowCache();
131 
132  return bbnll;
133 
134 }
virtual RooAbsReal * createNLL(RooAbsData &data, const RooLinkedList &cmdList)
Construct representation of -log(L) of PDFwith given dataset.
Definition: RooAbsPdf.cxx:777
STL namespace.
virtual RooAbsReal * createNLL(RooAbsData &data, const RooLinkedList &cmdList)
Construct representation of -log(L) of PDFwith given dataset.
RooAbsCategoryLValue is the common abstract base class for objects that represent a discrete value th...
virtual void Add(TObject *arg)
Definition: RooLinkedList.h:62
Class RooNLLVar implements a a -log(likelihood) calculation from a dataset and a PDF.
Definition: RooNLLVar.h:26
TLine * l
Definition: textangle.C:4
RooAbsData is the common abstract base class for binned and unbinned datasets.
Definition: RooAbsData.h:37
RooLinkedList is an collection class for internal use, storing a collection of RooAbsArg pointers in ...
Definition: RooLinkedList.h:35
#define ClassImp(name)
Definition: Rtypes.h:279
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:53
Mother of all ROOT objects.
Definition: TObject.h:37
RooSimultaneous facilitates simultaneous fitting of multiple PDFs to subsets of a given dataset...
char name[80]
Definition: TGX11.cxx:109
RooCmdArg is a named container for two doubles, two integers two object points and three string point...
Definition: RooCmdArg.h:27