OpenEuphoria

Re: 'Unknown' and three-valued logic (was: Example where Euphoria ...)

• Posted by Rom <kjehas at frisurf.no> Nov 26, 2002
• 449 views

"db31"
> I don't see anything in there that leads me to believe that CLIPS is =
using 3-state logic....

Yes and no. They are are trying to deal with unknown values in a very =
strange way.. not defining any truth-tables when nil is a legal value

> Using wildcards for seaching is also not 3-state logic.=20

It is boolean logic ... then they introduce "?" for what the don't know =
....

"db31"
> Maybe I missed something, or maybe you forgot to include some details,
> but I see no evidence that CIPS is working with 3-state logic

If we accept that CLIPS cannot handle three-valued logic ... not my =
suggestion (that the university standard expert system programming tool =
cannot handle unknowns .. (almost an insult).... then where is =
three-valued logic implemented?

And if no one can give a reference here (no one here know?) ... then how =
can I know what you know about three-valued logic is? What do you think =
the difference between boolean logic and three-valued logic is?

Rom