Hi Stephane,
Sure, you could use salience. However, salience is a spice best used sparingly lest it spoil the dish. Try to arrange your rules in modules and use other techniques like goal-seeking (you will need to do your homework on this) first before you resort to manipulating salience values. Jess is less sensitive to this now, but it pays to be careful and not try to "force" rules to fire in a specific order.
Take a peek at the wiki article http://www.jessrules.com/jesswiki/view?SalienceUsageTips
first.
There are also good examples and a discussion of pitfalls in the book "Expert Systems: Principles and Programming, Fourth Edition, by
Joseph C. Giarratano,
Gary D. Riley , ISBN: 0534384471 . Check back here if you are still stuck.
Cheers,
Jason
-----------------------------------------------------------
Jason C. Morris
Worcester Polytechnic Institute Phone: (508) 831-5006
Department of Computer Science FAX: (508) 831-5776
Fuller Laboratories - Room 312 [EMAIL PROTECTED]
Artificial Intelligence Lab (AIRG)
100 Institute Road
Worcester, MA 01609-2280
-----------------------------------------------------------
Jason C. Morris
Worcester Polytechnic Institute Phone: (508) 831-5006
Department of Computer Science FAX: (508) 831-5776
Fuller Laboratories - Room 312 [EMAIL PROTECTED]
Artificial Intelligence Lab (AIRG)
100 Institute Road
Worcester, MA 01609-2280
-----------------------------------------------------------
On 8/16/06, Stephane Bailliez <[EMAIL PROTECTED]> wrote:
Hi all,
I'm (very) slowly getting up to speed with experts systems (and jess)
and I have a few general questions around it...
I have actually a lot more but will try to do my homework more before :)
Nonetheless, here are my concerns:
I have rules where order is (or seems) to be a concern. Actually in the
real world the priority that is set is purely human at the moment..
rules are valid for a certain period of time within the system and their
priority depends on estimation of the initial weight that we want this
rule selection to have in the whole system and an additional weight that
is to be increased (at this time manually) depending on how well the
result of this rule is represented in the system and how close it is
before end date.
I basically have to pick up a list of 10 matches every once in a while,
(even though I may have 100 matching). And I can assume for now the
result is sorted in term of priority.
So my question is:
- Is salience a good place to mess with for this sort of 'priority'
function ?
I was thinking basically to try to set the salience depending on the
priority so could expect to get the 10 one quite immediately.
Reading JIA, documentation, etc...seems to indicate it would be better
to stay away from that. correct ?
- Should I simply assume that every match adds information to a
multislot and that I try to come up with another rule that is arranging
elements in the multislot based on priority ?
(I have no clue how to do that yet)
Cheers,
Stephane
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