Re: [Q] classifier systems & fuzzy logics
William Siler (williamsiler@delphi.com)
Tue, 7 Nov 1995 16:52:59 +0100
Lae-Jeong Park <ljpark@eekaist.kaist.ac.kr> writes:
>I'd like to know if there are papers that focusing the relationship
>between operation principle of "classifier systems" and "fuzzy logic controller".
>I think that the two share common features to each other.
Fuzzy classifiers and fuzzy controllers have very little
to do with each other.
A fuzzy control rule block takes in scalar numbers. These
activate rule like
IF x is SMALL and y is FAST then z is POS-SMALL
where x, y and z are scalar numbers. Numbers in, numbers
out. The fuzzy set members SMALL, FAST and POS-SMALL
have their grades of membership mapped from the real line.
Fuzzy controllers cannot handle discrete fuzzy sets of
categories, in which the grades of membership are NOT
mapped from the real line.
Fuzzy classifiers can have rules like
IF height is HIGH and width is NARROW and legs = 0
THEN class = BOOKSHELF
In this rule height is the name of a discrete fuzzy set which
has HIGH for a member; width is a discrete fuzzy set which
has NARROW for a member; legs is an integer; and class
is a discrete fuzzy set of classifications, one of which is
BOOKSHELF.