
Fuzzy Logic 273
≥⊗ A’s are C’s
where the fuzzy number
is read as “at least
” In particular,
if the fuzzy quantifiers and are monotone increasing (for example, when “
QQ
most”), then
and Equation (3.47) becomes
A’s are B’s
2
Q (A and B)’s are C’s (3.48)
⊗ A’s are C’s .
Furthermore, if B is a subset of A, then A and B = B, and Equation (3.48) reduces to
the chaining rule:
A’s are B’s
2
Q B’s are C’s (3.49)
⊗ A’s are C’s .
Example 3.47
Most students are undergraduates.
Most undergraduates are young.
Most
2
students are young.
where “most
2
” represents the product of the fuzzy number ...