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Cavali-Sforza and Edwards' (1967) chord distance [Takezaki, N. 96]


\begin{displaymath}
Dc=\frac{2}{\Pi r}\sum ^{r}_{j}\sqrt{2\left( (1-\sum _{i}^{m_{j}}\sqrt{x_{ij}y_{ij}}\right) }\end{displaymath}



Olivier Langella 2002-03-20