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ProfileInspector.cxx
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1// @(#)root/roostats:$Id: ProfileInspector.cxx 34109 2010-06-24 15:00:16Z moneta $
2
3/*************************************************************************
4 * Project: RooStats *
5 * Package: RooFit/RooStats *
6 * Authors: *
7 * Kyle Cranmer, Lorenzo Moneta, Gregory Schott, Wouter Verkerke *
8 * Akira Shibata
9 *************************************************************************
10 * Copyright (C) 1995-2008, Rene Brun and Fons Rademakers. *
11 * All rights reserved. *
12 * *
13 * For the licensing terms see $ROOTSYS/LICENSE. *
14 * For the list of contributors see $ROOTSYS/README/CREDITS. *
15 *************************************************************************/
16
17
18/** \class RooStats::ProfileInspector
19 \ingroup Roostats
20
21Utility class to plot conditional MLE of nuisance parameters vs. Parameters of Interest
22
23*/
24
25
27#include "RooRealVar.h"
28#include "RooAbsReal.h"
29#include "RooArgSet.h"
30#include "RooAbsPdf.h"
31#include "RooCurve.h"
32#include "TAxis.h"
33
35
36using namespace RooStats;
37using namespace std;
38
39////////////////////////////////////////////////////////////////////////////////
40
41ProfileInspector::ProfileInspector()
42{
43}
44
45////////////////////////////////////////////////////////////////////////////////
46/// ProfileInspector destructor
47
49{
50}
51
52////////////////////////////////////////////////////////////////////////////////
53///
54/// This tool makes a plot of the conditional maximum likelihood estimate of the nuisance parameter
55/// vs the parameter of interest
56///
57/// This enables you to discover if any of the nuisance parameters are behaving strangely
58/// curve is the optional parameters, when used you can specify the points previously scanned
59/// in the process of plotOn or createHistogram.
60/// To do this, you can do the following after the plot has been made:
61/// ~~~ {.cpp}
62/// profile, RooRealVar * poi, RooCurve * curve ){
63///RooCurve * curve = 0;
64/// ~~~
65
67{
68
69 const RooArgSet* poi_set = config->GetParametersOfInterest();
70 const RooArgSet* nuis_params=config->GetNuisanceParameters();
71 RooAbsPdf* pdf = config->GetPdf();
72
73
74 if(!poi_set){
75 cout << "no parameters of interest" << endl;
76 return 0;
77 }
78
79 if(poi_set->getSize()!=1){
80 cout << "only one parameter of interest is supported currently" << endl;
81 return 0;
82 }
83 RooRealVar* poi = (RooRealVar*) poi_set->first();
84
85
86 if(!nuis_params){
87 cout << "no nuisance parameters" << endl;
88 return 0;
89 }
90
91 if(!pdf){
92 cout << "pdf not set" << endl;
93 return 0;
94 }
95
96 RooAbsReal* nll = pdf->createNLL(data);
97 RooAbsReal* profile = nll->createProfile(*poi);
98
99 TList * list = new TList;
100 Int_t curve_N=100;
101 Double_t* curve_x=0;
102// if(curve){
103// curve_N=curve->GetN();
104// curve_x=curve->GetX();
105// } else {
106 Double_t max = dynamic_cast<RooAbsRealLValue*>(poi)->getMax();
107 Double_t min = dynamic_cast<RooAbsRealLValue*>(poi)->getMin();
108 Double_t step = (max-min)/(curve_N-1);
109 curve_x=new Double_t[curve_N];
110 for(int i=0; i<curve_N; ++i){
111 curve_x[i]=min+step*i;
112 }
113// }
114
115 map<string, std::vector<Double_t> > name_val;
116 for(int i=0; i<curve_N; i++){
117 poi->setVal(curve_x[i]);
118 profile->getVal();
119
120 TIter nuis_params_itr = nuis_params->createIterator();
121 TObject* nuis_params_obj;
122 while((nuis_params_obj = nuis_params_itr.Next())){
123 RooRealVar* nuis_param = dynamic_cast<RooRealVar*>(nuis_params_obj);
124 if(nuis_param) {
125 string name = nuis_param->GetName();
126 if(nuis_params->getSize()==0) continue;
127 if(nuis_param && (! nuis_param->isConstant())){
128 if(name_val.find(name)==name_val.end()) name_val[name]=std::vector<Double_t>(curve_N);
129 name_val[name][i]=nuis_param->getVal();
130
131 if(i==curve_N-1){
132 TGraph* g = new TGraph(curve_N, curve_x, &(name_val[name].front()));
133 g->SetName((name+"_"+string(poi->GetName())+"_profile").c_str());
134 g->GetXaxis()->SetTitle(poi->GetName());
135 g->GetYaxis()->SetTitle(nuis_param->GetName());
136 g->SetTitle("");
137 list->Add(g);
138 }
139 }
140 }
141 }
142 }
143
144 delete [] curve_x;
145
146
147 delete nll;
148 delete profile;
149 return list;
150}
#define g(i)
Definition: RSha256.hxx:105
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
#define ClassImp(name)
Definition: Rtypes.h:364
char name[80]
Definition: TGX11.cxx:110
Bool_t isConstant() const
Check if the "Constant" attribute is set.
Definition: RooAbsArg.h:363
Int_t getSize() const
RooAbsArg * first() const
TIterator * createIterator(Bool_t dir=kIterForward) const
TIterator-style iteration over contained elements.
RooAbsData is the common abstract base class for binned and unbinned datasets.
Definition: RooAbsData.h:79
virtual RooAbsReal * createNLL(RooAbsData &data, const RooLinkedList &cmdList)
Construct representation of -log(L) of PDFwith given dataset.
Definition: RooAbsPdf.cxx:1059
RooAbsRealLValue is the common abstract base class for objects that represent a real value that may a...
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:61
virtual RooAbsReal * createProfile(const RooArgSet &paramsOfInterest)
Create a RooProfileLL object that eliminates all nuisance parameters in the present function.
Definition: RooAbsReal.cxx:505
Double_t getVal(const RooArgSet *normalisationSet=nullptr) const
Evaluate object.
Definition: RooAbsReal.h:91
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:35
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:39
virtual void setVal(Double_t value)
Set value of variable to 'value'.
Definition: RooRealVar.cxx:282
ModelConfig is a simple class that holds configuration information specifying how a model should be u...
Definition: ModelConfig.h:30
const RooArgSet * GetParametersOfInterest() const
get RooArgSet containing the parameter of interest (return NULL if not existing)
Definition: ModelConfig.h:237
const RooArgSet * GetNuisanceParameters() const
get RooArgSet containing the nuisance parameters (return NULL if not existing)
Definition: ModelConfig.h:240
RooAbsPdf * GetPdf() const
get model PDF (return NULL if pdf has not been specified or does not exist)
Definition: ModelConfig.h:234
Utility class to plot conditional MLE of nuisance parameters vs.
TList * GetListOfProfilePlots(RooAbsData &data, RooStats::ModelConfig *config)
This tool makes a plot of the conditional maximum likelihood estimate of the nuisance parameter vs th...
virtual ~ProfileInspector()
ProfileInspector destructor.
A TGraph is an object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41
TObject * Next()
Definition: TCollection.h:251
A doubly linked list.
Definition: TList.h:44
virtual void Add(TObject *obj)
Definition: TList.h:87
virtual const char * GetName() const
Returns name of object.
Definition: TNamed.h:47
Mother of all ROOT objects.
Definition: TObject.h:37
Namespace for the RooStats classes.
Definition: Asimov.h:19