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Published in:
2013 | OriginalPaper | Chapter
An Approach for Mining Concurrently Closed Itemsets and Generators
Authors : Anh Tran, Tin Truong, Bac Le
Published in: Advanced Computational Methods for Knowledge Engineering
Publisher: Springer International Publishing
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Closed itemsets and their generators play an important role in frequent itemset and association rule mining since they lead to a lossless representation of all frequent itemsets. The previous approaches discover either frequent closed itemsets or generators separately. Due to
their properties and relationship
, the paper proposes
GENCLOSE
that
mines them concurrently
. In a level-wise search, it enumerates the generators using
a necessary and sufficient condition for producing (i+1)-item generators from i-item ones
. The condition is designed based on object-sets which can be implemented efficiently using diffsets, is very convenience and
is reliably proved
. Along that process,
pre-closed itemsets are gradually extended using three proposed expanded operators
. Also, we prove that they bring us
to expected closed itemsets
. Experiments on many benchmark datasets confirm the efficiency of
GENCLOSE
.