Re: Circular Fuzzy problem

Will Dwinnell (76743.1740@compuserve.com)
Tue, 5 Jan 1999 13:59:27 +0100 (MET)

Brian Mcgee wrote:
"The main problem we are having is near the edges (0 and 100).
Since the input variables are the same at the edges, the
output is equally in the states of 0 and 100. When the two are
combined, the net output becomes 50 instead of the desired 0 or
100. Perhaps there is a better way of combining the outputs so
that only one of the states is chosen if it is in one of the edge
cases."

This is the difficulty of dealing with cyclical variables. I
think there must be a more elegant solution, but I suppose you
could build some sort of filter which is used after fuzzy
inference and before defuzzification. Perhaps it would involve
repeating the fuzzy output distribution and windowing it
(deleting everything outside of some window) where support is
greatest?

-- 
Will Dwinnell

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