rf504_simwstool.C File Reference

Detailed Description

Organisation and simultaneous fits: using RooSimWSTool to construct a simultaneous pdf that is built of variations of an input pdf

 
#include "RooRealVar.h"
#include "RooCategory.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "RooPolynomial.h"
#include "RooSimultaneous.h"
#include "RooAddPdf.h"
#include "RooWorkspace.h"
#include "RooSimWSTool.h"
#include "RooPlot.h"
#include "TCanvas.h"
#include "TAxis.h"
#include "TFile.h"
#include "TH1.h"
using namespace RooFit;
 
void rf504_simwstool()
{
   // C r e a t e   m a s t e r   p d f
   // ---------------------------------
 
   // Construct gauss(x,m,s)
   RooRealVar x("x", "x", -10, 10);
   RooRealVar m("m", "m", 0, -10, 10);
   RooRealVar s("s", "s", 1, -10, 10);
   RooGaussian gauss("g", "g", x, m, s);
 
   // Construct poly(x,p0)
   RooRealVar p0("p0", "p0", 0.01, 0., 1.);
   RooPolynomial poly("p", "p", x, p0);
 
   // Construct model = f*gauss(x) + (1-f)*poly(x)
   RooRealVar f("f", "f", 0.5, 0., 1.);
   RooAddPdf model("model", "model", RooArgSet(gauss, poly), f);
 
   // C r e a t e   c a t e g o r y   o b s e r v a b l e s   f o r   s p l i t t i n g
   // ----------------------------------------------------------------------------------
 
   // Define two categories that can be used for splitting
   RooCategory c("c", "c");
   c.defineType("run1");
   c.defineType("run2");
 
   RooCategory d("d", "d");
   d.defineType("foo");
   d.defineType("bar");
 
   // S e t u p   S i m W S T o o l
   // -----------------------------
 
   // Import ingredients in a workspace
   RooWorkspace w("w", "w");
   w.import(RooArgSet(model, c, d));
 
   // Make Sim builder tool
   RooSimWSTool sct(w);
 
   // B u i l d   a   s i m u l t a n e o u s   m o d e l   w i t h   o n e   s p l i t
   // ---------------------------------------------------------------------------------
 
   // Construct a simultaneous pdf with the following form
   //
   // model_run1(x) = f*gauss_run1(x,m_run1,s) + (1-f)*poly
   // model_run2(x) = f*gauss_run2(x,m_run2,s) + (1-f)*poly
   // simpdf(x,c) = model_run1(x) if c=="run1"
   //             = model_run2(x) if c=="run2"
   //
   // Returned pdf is owned by the workspace
   RooSimultaneous *model_sim = sct.build("model_sim", "model", SplitParam("m", "c"));
 
   // Print tree structure of model
   model_sim->Print("t");
 
   // Adjust model_sim parameters in workspace
   w.var("m_run1")->setVal(-3);
   w.var("m_run2")->setVal(+3);
 
   // Print contents of workspace
   w.Print("v");
 
   // B u i l d   a   s i m u l t a n e o u s   m o d e l   w i t h   p r o d u c t   s p l i t
   // -----------------------------------------------------------------------------------------
 
   // Build another simultaneous pdf using a composite split in states c X d
   RooSimultaneous *model_sim2 = sct.build("model_sim2", "model", SplitParam("p0", "c,d"));
 
   // Print tree structure of this model
   model_sim2->Print("t");
}

 
[#0] WARNING:InputArguments -- The parameter 's' with range [-10, 10] of the RooGaussian 'g' exceeds the safe range of (0, inf). Advise to limit its range.
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooGaussian::g
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::x
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::m
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::s
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::f
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooPolynomial::p
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::p0
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooCategory::c
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooCategory::d
Splitrule for p.d.f model with state list 
 parameter m is split with constraint in categories (c)
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: list of prototype pdfs (model)
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: list of splitting categories (c)
[#1] INFO:ObjectHandling -- RooSimPdfBuilder::executeBuild: processing prototype pdf model
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: configured customizers for all prototype pdfs
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode run1
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode run2
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooSimultaneous::model_sim
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_run1
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooGaussian::g_run1
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::m_run1
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_run2
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooGaussian::g_run2
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::m_run2
0x315dec0 RooSimultaneous::model_sim = 1 [Auto,Dirty] 
  0x2c7ecc0/V- RooCategory::c = run2(idx = 1)
 
  0x2d2c060/V- RooAddPdf::model_run1 = 1/1 [Auto,Clean] 
    0x2d30a40/V- RooGaussian::g_run1 = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3220340/V- RooRealVar::m_run1 = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x47405d0/V- RooPolynomial::p = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3277140/V- RooRealVar::p0 = 0.01
  0x3224280/V- RooAddPdf::model_run2 = 1/1 [Auto,Clean] 
    0x31702b0/V- RooGaussian::g_run2 = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3172930/V- RooRealVar::m_run2 = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x47405d0/V- RooPolynomial::p = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3277140/V- RooRealVar::p0 = 0.01
 
RooWorkspace(w) w contents
 
variables
---------
(c,d,f,m,m_run1,m_run2,p0,s,x)
 
p.d.f.s
-------
RooGaussian::g[ x=x mean=m sigma=s ] = 1
RooGaussian::g_run1[ x=x mean=m_run1 sigma=s ] = 0.011109
RooGaussian::g_run2[ x=x mean=m_run2 sigma=s ] = 0.011109
RooAddPdf::model[ f * g + [%] * p ] = 1/1
RooAddPdf::model_run1[ f * g_run1 + [%] * p ] = 0.505554/1
RooAddPdf::model_run2[ f * g_run2 + [%] * p ] = 0.505554/1
RooSimultaneous::model_sim[ indexCat=c run1=model_run1 run2=model_run2 ] = 0.505554
RooPolynomial::p[ x=x coefList=(p0) ] = 1
 
Splitrule for p.d.f model with state list 
 parameter p0 is split with constraint in categories (c,d)
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: list of prototype pdfs (model)
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: list of splitting categories (c,d)
[#1] INFO:ObjectHandling -- RooSimPdfBuilder::executeBuild: processing prototype pdf model
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooMultiCategory::c,d
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: configured customizers for all prototype pdfs
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode {run1;bar}
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode {run1;foo}
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode {run2;bar}
[#1] INFO:ObjectHandling -- RooSimWSTool::executeBuild: Customizing prototype pdf model for mode {run2;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooSimultaneous::model_sim2
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooSuperCategory::model_sim2_index
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooMultiCategory::model_sim2_index_internalMultiCat
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_{run1;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooPolynomial::p_{run1;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::p0_{run1;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_{run1;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooPolynomial::p_{run1;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::p0_{run1;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_{run2;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooPolynomial::p_{run2;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::p0_{run2;bar}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooAddPdf::model_{run2;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooPolynomial::p_{run2;foo}
[#1] INFO:ObjectHandling -- RooWorkspace::import(w) importing RooRealVar::p0_{run2;foo}
0x4770d40 RooSimultaneous::model_sim2 = 1 [Auto,Dirty] 
  0x248b0f0/V- RooSuperCategory::model_sim2_index = {run2;foo}(idx = 1)
 [Auto,Clean] 
    0x4775a50/VS RooMultiCategory::model_sim2_index_internalMultiCat = {run2;foo}(idx = 1)
 [Auto,Clean] 
      0x2c7ecc0/VS RooCategory::c = run2(idx = 1)
 
      0x2c64770/VS RooCategory::d = foo(idx = 0)
 
  0x4776630/V- RooAddPdf::model_{run1;bar} = 1/1 [Auto,Clean] 
    0x3185de0/V- RooGaussian::g = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3085430/V- RooRealVar::m = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x477f390/V- RooPolynomial::p_{run1;bar} = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x4781b90/V- RooRealVar::p0_{run1;bar} = 0.01
  0x47d7100/V- RooAddPdf::model_{run1;foo} = 1/1 [Auto,Clean] 
    0x3185de0/V- RooGaussian::g = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3085430/V- RooRealVar::m = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x47dbff0/V- RooPolynomial::p_{run1;foo} = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x47de810/V- RooRealVar::p0_{run1;foo} = 0.01
  0x47dee90/V- RooAddPdf::model_{run2;bar} = 1/1 [Auto,Clean] 
    0x3185de0/V- RooGaussian::g = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3085430/V- RooRealVar::m = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x47e3e20/V- RooPolynomial::p_{run2;bar} = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x47e66a0/V- RooRealVar::p0_{run2;bar} = 0.01
  0x47e6d20/V- RooAddPdf::model_{run2;foo} = 1/1 [Auto,Clean] 
    0x3185de0/V- RooGaussian::g = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x3085430/V- RooRealVar::m = 0
      0x30859b0/V- RooRealVar::s = 1
    0x3085f50/V- RooRealVar::f = 0.5
    0x47ebd90/V- RooPolynomial::p_{run2;foo} = 1 [Auto,Dirty] 
      0x31df4d0/V- RooRealVar::x = 0
      0x47ee4f0/V- RooRealVar::p0_{run2;foo} = 0.01

Date

July 2008

Author

Wouter Verkerke

Definition in file rf504_simwstool.C.