Shared Tools: Reference Manual
| Release Level | 5.4 |
Release Date | 2008 10
| Revision Level | 1.0 |
|
Last modified on:
Monday, 20-Jul-09 14:05 CEST
|
RTXPS: forward chaining RULES
The forward chaingin RULES are very similar to the
first order production rules used in the
backward chaining version of the expert system, XPS.
The main difference is the ACTION or consequence part:
while in the backward chaining branch, this is always an ASSIGNMENT
setting the value of a DESCRIPTOR,
the forward chaining system uses a repertoir of ACTIONS
so that the general rule syntax looks like:
IF [CONDITION]
AND/OR [CONDITION] (evaluates to TRUE)
THEN (execute) ACTION
where ACTION can be
- an ASSINGMENT of the form: DESCRIPTOR == VALUE,
- any one of the built in FUNCTIONS;
- a user defined, named ACTION from the RTXPS ACTION Configuration file.
|
