Density Estimation

The MODECLUS Procedure

Density Estimation

The MODECLUS procedure now provides a default smoothing parameter if none of the options (DR=, CR=, R=, DK=, CK=, and K= ) is specified. The formula for computing this default value is given by

${[ \frac{2^{v+2}(v+2)\Gamma(.5v+1)}{nv^2} ]}^{1/(v+4)} \sqrt{ \sum_{l=1}^vs_l^2}$

If the data are distances, the factor $\sqrt{\sum{s_l}^2}$ can be replaced by an average root-mean-square Euclidean distance divided by $\sqrt{2}$ .

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