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I would like to figure out how to calculate the dissimilarity between attributes Jack and Jim. Given the attributes table shown below

Given the Relational table. enter image description here

enter image description here

and the example calculations enter image description here

I would like to understand how the dissimilarity is calculated for Jack and Jim.

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I understand how to approach the problem now.

$q$: number of attributes equal to 1 Jack and Jim.

$r$: number of attributes equal to 1 Jim.

$s$: number of attributes equal to 0 Jack, but equal to 1 Jim.

$t$: number of attributes equal to 0 for both Jack and Jim.

Therefore,

$d(\text{Jack},\text{Jim}) = {(r+s)\over(q+r+s)} = {(1+1)\over(1+1+1)} = 0.67$

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