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Prevosti et al's (1975) distance [Takezaki, N. 96] has a statistical property similar to that of Dr and is defined as


\begin{displaymath}
Cp=\frac{\sum ^{r}_{j}\sum ^{m_{j}}_{i}\left\vert x_{ij}-y_{ij}\right\vert }{2r}\end{displaymath}



Olivier Langella 2002-03-20