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Reference Guide
UniformProposal.h
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1 // @(#)root/roostats:$Id$
2 // Authors: Kevin Belasco 17/06/2009
3 // Authors: Kyle Cranmer 17/06/2009
4 /*************************************************************************
5  * Copyright (C) 1995-2008, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOSTATS_UniformProposal
13 #define ROOSTATS_UniformProposal
14 
15 #include "Rtypes.h"
16 
18 
19 #include "RooArgSet.h"
20 #include "RooMsgService.h"
21 #include "RooRealVar.h"
22 #include "TIterator.h"
23 
24 namespace RooStats {
25 
27 
28  public:
30 
31  /// Populate xPrime with a new proposed point
32  virtual void Propose(RooArgSet& xPrime, RooArgSet& x);
33 
34  /// Determine whether or not the proposal density is symmetric for
35  /// points x1 and x2 - that is, whether the probability of reaching x2
36  /// from x1 is equal to the probability of reaching x1 from x2
38 
39  /// Return the probability of proposing the point x1 given the starting
40  /// point x2
42 
43  virtual ~UniformProposal() {}
44 
45  ClassDef(UniformProposal,1) /// A concrete implementation of ProposalFunction, that uniformly samples the parameter space.
46  };
47 }
48 
49 #endif
ProposalFunction is an interface for all proposal functions that would be used with a Markov Chain Mo...
UniformProposal is a concrete implementation of the ProposalFunction interface for use with a Markov ...
bool Bool_t
Definition: RtypesCore.h:59
static const double x2[5]
Double_t x[n]
Definition: legend1.C:17
#define ClassDef(name, id)
Definition: Rtypes.h:297
virtual void Propose(RooArgSet &xPrime, RooArgSet &x)
Populate xPrime with a new proposed point.
virtual Bool_t IsSymmetric(RooArgSet &x1, RooArgSet &x2)
Determine whether or not the proposal density is symmetric for points x1 and x2 - that is...
Namespace for the RooStats classes.
Definition: Asimov.h:20
static const double x1[5]
double Double_t
Definition: RtypesCore.h:55
virtual Double_t GetProposalDensity(RooArgSet &x1, RooArgSet &x2)
Return the probability of proposing the point x1 given the starting point x2.