An Efficient Bayesian Network Approach For
Discovering Interesting Patterns
Author(s)
R. Malhas & Z. Al Aghbari
Abstract
The main problem faced by all association rule/pattern mining algorithms is their
production of a large number of rules which incurred a secondary mining
problem; namely, mining interesting association rules/patterns. The problem is
compounded by the fact that ‘common knowledge’ discovered rules are not
interesting, but they are usually strong rules with high support and confidence
levels – the classical measures.
In this paper, we present an efficient algorithm for discovering interesting
(unexpected) patterns based on background knowledge, represented by a
Bayesian network. A pattern/rule is unexpected if it is ‘surprising’ to the user.
The algorithm profiles a pattern as interesting (unexpected), if the absolute
difference between its support estimated from the dataset and the Bayesian
network exceeds a user specified threshold (ε ). Itemsets with the highest
diverging supports are considered the most interesting. The efficiency of the Java
implementation of the algorithm is verified experimentally.
Keywords: interesting patterns, association rules, frequent itemsets, Bayesian
network, background knowledge.
1 Introduction
Since the inception of the classical Apriori algorithm [1] for mining association
rules, development of interestingness measures has been a vigilant area of
research to mine interesting patterns out of a sheer volume of obvious and
irrelevant rules. The problem is compounded since obvious ‘common
knowledge’ discovered rules are not interesting, but they are usually strong rules
with high support and confidence levels - the classical measures in [1].
In this paper, we present an efficient algorithm that discovers
interesting/unexpected patterns based on background knowledge, represented by
Keywords
interesting patterns, association rules, frequent itemsets, Bayesian
network, background knowledge.
Related Book
Other papers in this volume
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