Re: [rules-users] Different results with same fact base
I don't see how these two loops should result in different facts in WM
unless there
are other rules besides the one you have shown.
Why do you expect more that one result from the first (!) version of
"recomm for slot 1"? Are there several recommendations with the same
maximum recommValue?
rule "filter products with category and brand for slot 1" isn't optimal.
The
patterns should be rearranged for earliest possible blocking of evaluation.
rule "filter products with category and brand for slot 1"
salience 20
activation-group "productfilter slot 1"
when
Translog($pid : itemID, $uid : userID)
Product(pid == $pid, brand != "", $price : netUnitPrice,
$brand : brand)
FilterCriteria(brands contains $brand)
ProductCategory(pid == $pid, $cid : cid, $root : root)
FilterCriteria(categories_slot1 contains $root) // stop
here if the root needs filtering
not Recommendation(pid == $pid, slot == 1, uid == $uid)
Category(cid == $cid, $cname : cname) // just needed for
the insert
then
insert(new Recommendation($pid, $price, $brand, $cname, $cid,
(byte)1, $root, $uid));
end
Regarding your rule "exclude products", it should probably be run before
you insert any
Translog facts, with a separate fireAllRules() call. Then you don't need
salience.
Or you can include the conditions in the Product pattern of
rule "filter products with category and brand for slot 1"
-W
On 3 December 2012 09:59, raffi <christian.koehler(a)s2008.tu-chemnitz.de>wrote:
Hi.
I localized the problem. The following lines lead to the described
behavior:
/for (Translog tr : translog) {
if (tr.getTransType() == 1 &&
!(tr.getUserID().compareTo("null")
== 0)) {
FactHandle tr_insert = ksession.insert(tr);
ksession.fireAllRules();
ksession.retract(tr_insert);
}
}/
If I run the program with the changed lines
/for (Translog tr : translog) {
if (tr.getTransType() == 1 &&
!(tr.getUserID().compareTo("null")
== 0)) {
ksession.insert(tr);
}
}
ksession.fireAllRules();/
it doesn't work as I expect it. I didn't change the according rule
/rule "filter products with category and brand for slot 1"
salience 20
activation-group "productfilter slot 1"
when
Translog($pid : itemID, $uid : userID)
Product(pid == $pid, brand != "", $price : netUnitPrice,
$brand : brand)
ProductCategory(pid == $pid, $cid : cid, $root : root)
Category(cid == $cid, $cname : cname)
FilterCriteria(categories_slot1 contains $root)
FilterCriteria(brands contains $brand)
not Recommendation(pid == $pid, slot == 1, uid == $uid)
then
insert(new Recommendation($pid, $price, $brand, $cname,
$cid, (byte)1,
$root, $uid));
end/
In the end I show all Recommendation-facts in the console using a query.
There should be at least 4, grouped by uid (userid). But with the corrected
lines I only get one Recommendation-fact.
/query "recomm for slot 1"
$recomm_max : Recommendation(slot == 1, $recomm_value :
recommValue, $uid :
uid)
not Recommendation(slot == 1, recommValue > $recomm_value, uid ==
$uid)
end/
The same applies for the query, without grouping by uid:
/query "recomm for slot 1"
$recomm_max : Recommendation(slot == 1)
end/
I chose the first (wrong) solution, with retracting the Translog-facts
directly after firing, because it is transaction data. For my test there
are
only a few lines, but in the productive scenario there are at least 100.000
records to insert.
Regards...
--
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