Re: Problem with interpretation
Laurent Foulloy (foulloy@esia.univ-savoie.fr)
Mon, 4 Dec 1995 21:55:22 +0100
In article 100000@dale.canberra.edu.au, Quan Thanh Nguyen <quann@dale.canberra.edu.au> writes:
>Would anyone please point out whether the following interpretation is
>correct?
>
>I have this is_a relationship: Fast_Model_Car is_a Model_Car
>(where "model car" is a fuzzy subset of vehicles)
>
>Given Fast = {mu/max_speed} = {1/250Km, 0.9/220Km, 0.8/200Km,.....}
>
>If a car is KNOWN to be a Model_Car with membership degree = 0.7
>Also, the max speed of the car is 220Km. Can I assert that the car is
>a Fast_Model_Car with membership degree = Min(0.7, 0.9) = 0.7 ???
>
>Thanks a lot,
>---------------------------------------------------------------------
>Quan Nguyen
>Uni of Canberra, Australia
>Email: quann@ise.canberra.edu.au
>
My interpretation is the following :
I rewrite your rule as :
if speed is Fast and car is Model_Car then this_car is Fast_Model_Car
Then since you know that 220km/h is described by the term Fast at the degree 0.9
and you know that the car is 0.7 for Model_car then
The conjonction of the two premisses is min(0.7, 0.9). The linguistic vision of the rule allows to deduce that this_car is 0.7 for Fast_Model_Car.
Hoping it answers to the question.
L. Foulloy
LAMII/CESALP
Univ. of Savoie
BP 806
F-74016 ANNECY CEDEX
FRANCE
foulloy@univ-savoie.fr
http://ava.univ-savoie.fr