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Tool to analyze impact of individual nuisances on process shapes #269

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Tool to analyze impact of individual nuisances on process shapes #269

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4a83cf8
Merge pull request #1 from cms-analysis/master
Mar 19, 2019
cbd6e7f
added option to set label size in plot
Mar 19, 2019
3d56d83
finalize merge with upstream
Jan 25, 2021
b2c6755
Merge remote-tracking branch 'upstream/master'
Jan 18, 2022
73bcde4
implemented tool to analyze effect of individual nuisances on shape o…
Jan 18, 2022
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1 change: 1 addition & 0 deletions CombineTools/interface/CombineHarvester.h
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Original file line number Diff line number Diff line change
Expand Up @@ -337,6 +337,7 @@ class CombineHarvester {
*/
/**@{*/
double GetRate();
std::map<std::string, TH1F> ShapeEvolution(RooFitResult const& fit);
double GetObservedRate();
double GetUncertainty();

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35 changes: 35 additions & 0 deletions CombineTools/src/CombineHarvester_Evaluate.cc
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Expand Up @@ -576,6 +576,41 @@ void CombineHarvester::UpdateParameters(RooFitResult const& fit) {
}
}

std::map<std::string, TH1F> CombineHarvester::ShapeEvolution(RooFitResult const& fit) {
auto lookup = GenerateProcSystMap();
std::map<std::string, TH1F> shapes;
auto backup = GetParameters();
shapes["prefit"] = GetShapeInternal(lookup);
for (int i = 0; i < fit.floatParsFinal().getSize(); ++i) {
RooRealVar const* var =
dynamic_cast<RooRealVar const*>(fit.floatParsFinal().at(i));
// check for failed cast here
auto it = params_.find(std::string(var->GetName()));
if (it != params_.end()) {
it->second->set_val(var->getVal());
it->second->set_err_d(var->getErrorLo());
it->second->set_err_u(var->getErrorHi());
} else {
if (verbosity_ >= 1) {
LOGLINE(log(),
"Parameter " + std::string(var->GetName()) + " is not defined");
}
continue;
}
auto shape = GetShapeInternal(lookup);
// std::cout << "\t" << it->first << "\t" << rate << std::endl;
shapes[it->first] = shape;
// reset parameters to prefit conditions
this->UpdateParameters(backup);
}

// also safe postfit shape
this->UpdateParameters(fit);
shapes["total"] = GetShapeInternal(lookup);
this->UpdateParameters(backup);
return shapes;
}

void CombineHarvester::UpdateParameters(RooFitResult const* fit) {
UpdateParameters(*fit);
}
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4 changes: 4 additions & 0 deletions CombineTools/src/CombineHarvester_Python.cc
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Expand Up @@ -232,6 +232,9 @@ BOOST_PYTHON_MODULE(libCombineHarvesterCombineTools)
py::to_python_converter<std::map<std::string, CombineHarvester>,
convert_cpp_map_to_py_dict<std::string, CombineHarvester>>();

py::to_python_converter<std::map<std::string, TH1F>,
convert_cpp_map_to_py_dict<std::string, TH1F>>();

py::to_python_converter<TH1F,
convert_cpp_root_to_py_root<TH1F>>();

Expand Down Expand Up @@ -338,6 +341,7 @@ BOOST_PYTHON_MODULE(libCombineHarvesterCombineTools)
// Modification
.def("GetParameter", Overload1_GetParameter,
py::return_value_policy<py::reference_existing_object>())
.def("ShapeEvolution", &CombineHarvester::ShapeEvolution)
.def("UpdateParameters", Overload1_UpdateParameters)
.def("RenameParameter", &CombineHarvester::RenameParameter)
.def("RenameSystematic", &CombineHarvester::RenameSystematic)
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