Practical Applications of Data Mining

1.4 Integrated FraMeworK For IntellIgent databases 17

Unlike conventional set theory, which uses Boolean values of either 0

or 1, fuzzy sets have a function that admits a degree of membership in the

set from complete exclusion, which corresponds to 0, to absolute inclusion,

which corresponds to 1. While conventional sets have only two possible

values, 0 and 1, fuzzy sets do not have this arbitrary boundary to separate

members from nonmembers.

Fuzzy logic can be used to naturally describe our everyday business ap-

plications because it presents us with a flexible method to get a high-level

abstraction of problem representation. In the real world, problems are often

vague and imprecise, so they cannot be described in the conventional ...