Abstract:Negative frequent itemsets (NFIS), which refer to frequent itemsets with non-occurring and occurring item(s) like (a 1 a 2 ¬a 3 a 4), have become increasingly important in real applications, such as bioinformatics and healthcare management. Very few methods have been proposed to mine NFIS and most of them only satisfy the user-specified single minimum support, which implicitly assumes that all items in the database are of the same nature or of similar frequencies in the database. This is often not the case in … Show more
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