Mining Target-Oriented Sequential Patterns with Time-Intervals

Details Mining Target-Oriented Sequential Patterns with Time-Intervals Mining Target-Oriented Sequential Patterns with Time-Intervals

2010-09-05

arxiv.org/abs/1009.0929v1

International journal of computer science & information Technology (IJCSIT) Vol.2, No.4, August 2010

Computer Science

Databases

11 pages, 9 tables

Scientific paper

10.5121/ijcsit.2010.2410

A target-oriented sequential pattern is a sequential pattern with a concerned itemset in the end of pattern. A time-interval sequential pattern is a sequential pattern with time-intervals between every pair of successive itemsets. In this paper we present an algorithm to discover target-oriented sequential pattern with time-intervals. To this end, the original sequences are reversed so that the last itemsets can be arranged in front of the sequences. The contrasts between reversed sequences and the concerned itemset are then used to exclude the irrelevant sequences. Clustering analysis is used with typical sequential pattern mining algorithm to extract the sequential patterns with time-intervals between successive itemsets. Finally, the discovered time-interval sequential patterns are reversed again to the original order for searching the target patterns.

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