Why Confidence does not consider B in Association rule mining -


for arm rule a->b, confidence can calculated aub/a, gives out of transactions in present, how many have , b together.

my feeling in confidence calculation giving more importance rather b. b should considered equally valuable in determining importance of rule.

precisely, want there should term (may called inverse of confidence) equals aub/b.

any kind of explanations welcome....

the equation wasn't chosen fun or intuition.

there reason why rule -> b, , not <- b...

the mathematical reason define way called conditional probabilitiy.

the decision rule -> b conditional rule. if b. not other way round... formula propose if b a.


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