Below option determines the minimum level of support for a rule as a percentage of the number of baskets in the input data set. PCTSUP"|"SUPPCT"|"SUP_PCT"|"PCTSUPPORT In your case rules alone or combination of Product 3 & Product 4 will be chosen if their combination also suffice this percentage. I guess Rules with combination of Product 3 & Product 4 may not have required SUPPCT so dropped and rules consisting of Product 4 seems to have required SUPPCT so final chosen. Hope I answered your query. Thanks and Regards, Kiran Bhole
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