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I was wondering if someone could explain how to calculate the dissimilarity between two numeric attributes. Given that a numeric attribute is a a measurable quantity, represented in integer or real values.

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1 Answer 1

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I have worked out an example. Essentially, we use the matrix on the right hand side to determine $a, b, c,$ and $d$. For objects $x_1$ to $x_2$.

A1 A2 A3 A4

0  1  0  0

1  1  0  1

0->1
1->1
0->0
0->1

a=1
c=1
b=1
d=2

(a+c)/(a+b+c+d) = (0+2)/(1+1+1+2)
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