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Dear readers,

I want to handle undefined variables, i.e. if a measurement ist not

available and thus the input value is invalid:

In our software, we set a flag "invalid" to true, if the measurement is not

available.

But there comes up the following question: How should the term with the

undefined variable be handled?

One possibility would be, to let the truth always be "0" of that sub-term,

e.g.:

IF A = a THEN ...

####

Here, (A=a) = 0

But how should NOT be handled then?

IF (NOT(A=a)) THEN

#########

Here, (NOT(A=a)) would be "1"!

Or should the complete subterm with the undefined variable be "0"? Hence,

NOT(A=a) would be "0".

(To Invalidate the whole rule, Is not a good idea: because: IF A=a OR B=b

THEN ...)

Greetings

Ernst Murnleitner

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**Next message:**Will Dwinnell: "Re: Fuzzy clustering software"**Previous message:**Faraz Hussain: "linguistic variables"**Next in thread:**Andrew Edmonds: "Re: truth values if one variable is undefined?"**Reply:**Andrew Edmonds: "Re: truth values if one variable is undefined?"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

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