LMU/musrfit
5
0
Fork 0
Code Issues 6 Pull Requests Actions Packages Projects Releases 4 Activity

(1) changed normalization of maximum likelihood. (2) ascii export from canvas adds initial space for empty column for easier parsing. (3) fix of some typos

Browse Source
This commit is contained in:
suter_a
2013-11-08 11:55:43 +00:00
parent 258a0ce336
commit 392cd0b4b3
5 changed files with 24 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/classes/PRunSingleHisto.cpp
View File

@ -296,7 +296,7 @@ Double_t PRunSingleHisto::CalcChiSquareExpected(const std::vector<Double_t>& par
// CalcMaxLikelihood (public)
//--------------------------------------------------------------------------
/**
* <p>Calculate log maximum-likelihood.
* <p>Calculate log maximum-likelihood. See http://pdg.lbl.gov/index.html
*
* <b>return:</b>
* - log maximum-likelihood value
@ -381,13 +381,14 @@ Double_t PRunSingleHisto::CalcMaxLikelihood(const std::vector<Double_t>& par)
// calculate theory for the given parameter set
theo = N0*TMath::Exp(-time/tau)*(1+fTheory->Func(time, par, fFuncValues))+bkg;
theo *= normalizer;
// check if data value is not too small
if (fData.GetValue()->at(i) > 1.0e-9)
data = normalizer*fData.GetValue()->at(i);
else
data = 1.0e-9;
// add maximum log likelihood contribution of bin i
mllh -= data*TMath::Log(theo) - theo - TMath::LnGamma(data+1);
data = normalizer*fData.GetValue()->at(i);
if (data > 1.0e-9) {
mllh += (theo-data) + data*log(data/theo);
} else {
mllh += (theo-data);
}
}
return mllh;