The specific amendments are as follows:1. Statements of the formulas to calculate the utility of the itemset on transactions have profit changes.2. Modify the EFIM algorithm called MEFIM to mine HUI on the changed profit database.After that, we continued to improve the modified MEFIM algorithm to mine HUI more effectively, a number of improvements are as follows:- To propose the structure P-set with the purpose of reducing the number of transactions in the mining process. - To Propose the reverse projection method P-set between the candidate and the reviewed data to reduce the number of transactions involved the creation of new data projection for the expansion set of candidates and the calculated utility of its.- Improved iMEFIM algorithm based on P-set.
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