CLOSED ITEMSET MINING USING DIFFERENCE UPDATE

摘要

Embodiments are directed to, for a database comprising a set of transactions, with each transaction including an itemset comprising one or more individual items, obtaining a set of all closed frequent itemsets by checking frequencies of transaction sets, wherein a given itemset, I, is frequent where at least some threshold number (μ) of transactions contain I, and wherein the given itemset I is closed wherein it is impossible to add any item to I without changing the frequency thereof.