A Discussion of Indices for the Evaluation of Fuzzy Associations in Relational Databases

Document Type

Book Chapter

Publication Date

2003

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Abstract

This paper investigates techniques to identify and evaluate associations in a relational database that are expressed by fuzzy if-then rules. Extensions of the classical confidence measure based on the α-cut decompositions of the fuzzy sets are proposed to address the problems associated with the normalization in scalar-valued generalizations of confidence. An analysis by α-level differentiates strongly and weakly supported associations and identifies robustness in an association. In addition, a method is proposed to assess the validity of a fuzzy association based on the ratio of examples to counterexamples.

DOI

10.1007/3-540-44967-1_12

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