Distance Class Reference

Collaboration diagram for Distance:

Public Member Functions
	Distance ()
void	calculate (std::vector< double > pdf, std::vector< double > gauss, double minFluc, double binwidth)

Public Attributes
double	HistIntersection
double	KLDivergence
double	JSDivergence
double	L1norm
double	L2norm

Constructor & Destructor Documentation

Distance()

Distance::Distance ( )

inline

: HistIntersection(0), KLDivergence(0), JSDivergence(0), L1norm(0), L2norm(0) {};

Member Function Documentation

calculate()

void Distance::calculate ( std::vector< double >  pdf, std::vector< double >  gauss, double  minFluc, double  binwidth  )

inline

                                                                                                  {
    HistIntersection = 0;
    KLDivergence     = 0;
    JSDivergence     = 0;
    L1norm           = 0;
    L2norm           = 0;
    //double Fluc;
    for(int bin = 0;bin < pdf.size(); ++bin) {
      // Fluc = (bin+0.5)*binwidth +minFluc;
      if( isnan(pdf[bin]) ) {
        std::cerr << "      # Warning: ProbDensity[" << bin << " = " << pdf[bin] << std::endl;
        continue;
      }
      HistIntersection += std::fmin(pdf[bin], gauss[bin]) * binwidth;
      KLDivergence     += binwidth *  pdf[bin] *log(pdf[bin]/gauss[bin]);
      JSDivergence     += binwidth *gauss[bin] *log(gauss[bin]/pdf[bin]);
      L1norm           += binwidth *fabs( pdf[bin]-gauss[bin] );
      L2norm           += binwidth *( pdf[bin]-gauss[bin] )*( pdf[bin]-gauss[bin] );
    }
    JSDivergence = (KLDivergence +JSDivergence)/2.0;
    L2norm = sqrt( L2norm );
  };

Member Data Documentation

HistIntersection

double Distance::HistIntersection

JSDivergence

double Distance::JSDivergence

KLDivergence

double Distance::KLDivergence

L1norm

double Distance::L1norm

L2norm

double Distance::L2norm

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

• /Users/shoki/GitHub/Locality/Processing/OpHistogram.cpp