"Defrelations" are called "ordered facts" in Jess. In Jess, you don't
have to (and in fact, cannot) declare them explicitly; they're
declared implicitly on first use. So a defrelation like
(defrelation location (?object ?place))
would be implicitly created when a fact like
(location monkey t5-7)
was asserted or a rule like
(defrule monkey-location
(location monkey ?where)
...
was defined. More often in Jess you use "unordered facts" and in this
case you do have to define a relation (called a "deftemplate.")
(deftemplate location (slot object) (slot place))
(defrule monkey-location
(location (object monkey) (place ?where))
...
I think Lou Farho wrote:
[Charset iso-8859-1 unsupported, filtering to ASCII...]
> Has anyone moved from Haley to JESS?
> We are interested in finding out what issues there might be?
> We are particularly interested in converting "defrelation" to the equivalent
> of JESS?
>
>
> Thanks!
>
---------------------------------------------------------
Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
Org. 8920, MS 9012 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
Livermore, CA 94550
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