Dear all:
    I want to ask question about "binary" distance measure. As far as I
know, there are many binary distance measures,eg, binary Jarcad distance,
binary euclidean distance, and binary Bray-Curtis distance,etc. It is even
more confusing because many have more than one name. So , I wan to know
what the definite name of  the binary distance measure of the "dist"
function in the "stats" package is and further want to know the equation of
the binary distance. Thank you very much!
With  my  best  regards.

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