How to calculate proximity measure for symmetric binary attributes?

Contingency table for binary data: Consider 1 for positive/True  and 0 for negative/False Here we are considering Male and regular as positive and female and contract as negative. A = Akram is positive and Ali is also positive. so A=1 because Ali and Akram both are male and the male is positive. B = Akram is positive and Ali is negative. So B=1 because Akram is regular that is positive and Ali is on contract that is negative C = Akram is negative and Ali is 1. So C = 0 because Akram is never negative. He is male and regular. and male and regular both are positive. D = Akram is negative and Ali is also negative. So D=0 because Akram is never negative. He is always positive(male and regular).

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