The amendments are as follows:
1. Speaking of formula useful value of the transaction on profit itemset change.
2. Modify the algorithm Efim algorithms to exploit HUI MEFIM on profit database changes.
After that, we continue to improve MEFIM modified algorithm to exploit more effectively HUI, some improvements are as follows:
- Recommended P-set structure for the purpose of limiting the number of transactions directly involved in the mining process useful set high.
- Recommended screening methods upside down on P-set between the candidate and the training data are reviewed to limit the number of transactions involved in the projection data to create a new zone for the expansion set value candidates and candidates collective helpful.
- Proposed improvements algorithm from algorithms based on P-set iMEFIM .
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