Hi Aditya,
I would suggest you filter the rules you get from a low support level by using a metric called "interest" defined as below.
According to probability theory, X and Y are independent if P(X∪Y)=P(X)P(Y). So the rule X⇒Y is not interesting if supp(X∪Y)≈supp(X)∗supp(Y), which means that a rule is not interesting if its antecedent and consequent are approximately independent. Wu et al. introduces the function interest(X,Y)=|supp(X∪Y)−supp(X)supp(Y)|. If interest(X,Y)≥min_interest, where min_interest is a predefined threshold, then itemset X∪Y is referred to as a potentially interesting itemset.
Hope it helps,
Ye
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