A
TRANSACTION MAPPING ALGORITHM FOR MINING
FREQUENT ITEMSETS
ABSTRACT
Association Rule Mining
is a very
popular Data mining
technique and it
finds relationships among
different entities of
records. In this project, we
present a novel
algorithm for mining
complete frequent itemsets.
This algorithm
is referred to
as the TM (Transaction Mapping) algorithm from
here on. In this
algorithm, transaction ids of each
itemset are mapped
and compressed to
continuous transaction
intervals in a
different space and
the counting of
itemsets is performed
by intersecting these
interval lists in
a depth-first order along
the lexicographic tree. When
the compression coefficient
becomes smaller than the
average number of
comparisons for intervals intersection at
a certain level,
the algorithm switches
to transaction id intersection.
We have
evaluated the algorithm
against two popular frequent itemset
mining algorithms -
FP-growth and Edclat
using a variety of
data sets with
short and long
frequent patterns. Experimental
data show that
the TM algorithm outperforms
these two algorithms.
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