Application of effective negative association rule selected through quadratic correlation judging method to analysis of customer buying behaviors
A secondary correlation and behavior analysis technology, applied in the application field of negative association rules, can solve the problem of misleading shopping malls
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[0072] The secondary correlation determination method selects the application of effective negative association rules in the analysis of customer purchase behavior, and the specific steps include:
[0073] (i) Basic concept of setting association rules with negative items:
[0074] For a given itemset X, Y, X∩Y=Φ, there are 8 types of association rules:
[0075] Shaped like The itemset of is called a negative itemset, that is, negativeitemset, which means that there is no itemset X in a transaction; among them, (2)-(4) are called negative association rules, that is, association rules containing negative items;
[0076] In order to simplify the discussion, generally only the association rules in the form (1)-(4) are considered.
[0077] The calculation of support and confidence is easy in positive association rules, but it is more difficult to directly calculate their support and confidence because negative association rules contain negative itemsets. We can use the k...
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