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RooUnblindOffset.cxx
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * @(#)root/roofit:$Id$
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/** \class RooUnblindOffset
18 \ingroup Roofit
19
20Implementation of BlindTools' offset blinding method
21A RooUnblindOffset object is a real valued function
22object, constructed from a blind value holder and a
23set of unblinding parameters. When supplied to a PDF
24in lieu of a regular parameter, the blind value holder
25supplied to the unblinded objects will in a fit be minimized
26to blind value corresponding to the actual minimum of the
27parameter. The transformation is chosen such that the
28the error on the blind parameters is identical to that
29of the unblind parameter
30**/
31
32#include "RooArgSet.h"
33#include "RooUnblindOffset.h"
34
35using namespace std;
36
38
39////////////////////////////////////////////////////////////////////////////////
40/// Constructor from a given RooAbsReal (to hold the blind value) and a set of blinding parameters
41
42RooUnblindOffset::RooUnblindOffset(const char *name, const char *title,
43 const char *blindString, double scale, RooAbsReal& cpasym)
44 : RooAbsHiddenReal(name,title),
45 _value("value","Offset blinded value",this,cpasym),
46 _blindEngine(blindString,RooBlindTools::full,0.,scale)
47{
48}
49
50////////////////////////////////////////////////////////////////////////////////
51/// Constructor from a given RooAbsReal (to hold the blind value) and a set of blinding parameters
52
53RooUnblindOffset::RooUnblindOffset(const char *name, const char *title,
54 const char *blindString, double scale, RooAbsReal& cpasym,
55 RooAbsCategory& blindState)
56 : RooAbsHiddenReal(name,title,blindState),
57 _value("value","Offset blinded value",this,cpasym),
58 _blindEngine(blindString,RooBlindTools::full,0.,scale)
59{
60}
61
62////////////////////////////////////////////////////////////////////////////////
63/// Copy constructor
64
66 RooAbsHiddenReal(other, name),
67 _value("asym",this,other._value),
68 _blindEngine(other._blindEngine)
69{
70}
71
72////////////////////////////////////////////////////////////////////////////////
73/// Evaluate RooBlindTools unhide-offset method on blind value
74
76{
77 if (isHidden()) {
78 // Blinding is active for this event
80 } else {
81 // Blinding is not active for this event
82 return _value ;
83 }
84}
#define ClassImp(name)
Definition Rtypes.h:377
char name[80]
Definition TGX11.cxx:110
A space to attach TBranches.
Base class for objects that want to hide their return value from interactive use, e....
bool isHidden() const
Abstract base class for objects that represent a real value and implements functionality common to al...
Definition RooAbsReal.h:59
double UnHideOffset(double PrecisionBlind) const
Implementation of BlindTools' offset blinding method A RooUnblindOffset object is a real valued funct...
RooBlindTools _blindEngine
RooUnblindOffset()=default
RooRealProxy _value
double evaluate() const override
Evaluate RooBlindTools unhide-offset method on blind value.