CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass Class Reference

Collaboration diagram for CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass:

Public Member Functions
	nFMethodPileupBasedLinearFitClass (const nlohmann::json &jsonConfig)
double	getPFake (const double muactual, const int N_fake) const

Private Attributes
double	m_slopeUnscaled = -999.
double	m_interceptUnscaled = -999.
double	m_slopeScaled = -999.
double	m_interceptScaled = -999.

Detailed Description

Definition at line 68 of file SSVWeightsAlg.h.

Constructor & Destructor Documentation

nFMethodPileupBasedLinearFitClass()

CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::nFMethodPileupBasedLinearFitClass

(

const nlohmann::json &

jsonConfig

)

Definition at line 689 of file SSVWeightsAlg.cxx.

                                                                                                                    {
    // Extract information from JSON file for nFMethodPileupBasedLinearFit
    m_slopeUnscaled = jsonConfig["nF_pileup_based_linearfit"]["unscaled"]["slope"];
    m_interceptUnscaled = jsonConfig["nF_pileup_based_linearfit"]["unscaled"]["intercept"];
    m_slopeScaled = jsonConfig["nF_pileup_based_linearfit"]["scaled"]["slope"];
    m_interceptScaled = jsonConfig["nF_pileup_based_linearfit"]["scaled"]["intercept"];
  }

Member Function Documentation

getPFake()

double CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::getPFake	(	const double	muactual,
		const int	N_fake ) const

Definition at line 698 of file SSVWeightsAlg.cxx.

                           {
    // Calculate expected counts
    double n_F = m_slopeUnscaled * muactual + m_interceptUnscaled;
    double n_F_scaled = m_slopeScaled * muactual + m_interceptScaled;
    auto denom = poisson_pmf(N_fake, n_F);
    if (denom == 0.)[[unlikely]]{
      throw std::runtime_error("nFMethodPileupBasedLinearFitClass::getPFake: divide-by-zero.");
    }
    // Calculate P_fake
    double P_fake = poisson_pmf(N_fake, n_F_scaled) / poisson_pmf(N_fake, n_F);
 
    return P_fake;
  }

Member Data Documentation

m_interceptScaled

double CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::m_interceptScaled = -999.

private

Definition at line 78 of file SSVWeightsAlg.h.

m_interceptUnscaled

double CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::m_interceptUnscaled = -999.

private

Definition at line 76 of file SSVWeightsAlg.h.

m_slopeScaled

double CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::m_slopeScaled = -999.

private

Definition at line 77 of file SSVWeightsAlg.h.

m_slopeUnscaled

double CP::SSVWeightsAlg::nFMethodPileupBasedLinearFitClass::m_slopeUnscaled = -999.

private

Definition at line 75 of file SSVWeightsAlg.h.

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The documentation for this class was generated from the following files:

• SSVWeightsAlg.h
• SSVWeightsAlg.cxx