Based on the definition of the probabilistic frequent item- set, the support of an itemset follows the Poisson Binomial distribution, from which we can deduce that the frequent probability actually equals that one subtracts the probabili- ty computed from the corresponding cumulative distribution function (CDF) of the support. Moreover, different from UApriori, DP algorithm computes the frequent probability instead of the expected support for each itemset. The time complexity of the dynamic programming computation for each itemset is O(N 2 × min sup).
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