I have the formula and an example for calculating the distance between 2 clusters below,

enter image description here

I couldn't figure out why and how {2,4,8} can become 8 and {-5,0,5} can become -5. Can someone please enlighten me please?


1 Answer 1


$D$ is a linkage criteria, it is known as complete linkage. Goto Wikipedia:


and you should see this:

enter image description here

Does the formula look similar to yours?

The distance between the two clusters is the maximum between the two clusters. Obviously, $8$ and $-5$ are the furthest in your scenario. For instance, $D(8,0)$ = |8-0| = only 8.

  • 1
    $\begingroup$ I must have confused this d distance with Eculidean and Manhattan distances and have been doing the calculations and couldn't get the answer. Thank you so much for your help. $\endgroup$
    – Lobbie
    Commented Mar 31, 2017 at 4:48

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