Re: [rules-users] [planner] Tabo List question
Hi Marco,
How did the diversification work out?
If your research produces an interesting text about Drools Planner,
feel free to mail it to me, I might put it up on the Drools blog.
See below for answers.
dmzpippo-drools(a)yahoo.it schreef:
Hi all,
I have a problem with the list of taboo search. I have a move class with
many attributes and I want to consider that a move is taboo by only two
or three of its attributes (integer values).
For example:
I have two lists (each has its own id), the move is to move an object
(which has its own id) from a list to another. then the attributes that
identify the move are the three identifiers (id_object, id_SRC_List,
id_DST_List).
when I make this move I would consider taboo all the moves that bring me
back the item in the original list. ie all the moves of type
(Id_object, id_of_any_other_List, id_SRC_List).
I don't think that I can use CompletTaboSize (or undoMove etc..) because
I think that two moves that perform the same exchange can be considered
different because of other attributes. is this correct ?
For now I'm trying to use the PropertyTaboList.
public Collection <? extends Object> getTabuProperties () (
HashMap <Integer, Integer> propertyTaboo = new HashMap <Integer,Integer>
(1);
propertyTaboo.put (CustomerNumber, sourceRoute); // id_object, id_SRC_List
return Collections.singletonList (propertyTaboo);
)
If you implement the interface on your moves and just add
<completePropertyTabuListSize>5</...>
If you want to do it on 2 property's just add them both to a List/Set
and return the list/set.
public Collection<? extends Object> getTabuProperties() {
return Arrays.<Exam>asList(leftExam, rightExam);
}
I do not know if it reaches the target.
Someone has some advice on how I could do?
Turn debug logging on to see when something is ignored because it is tabu.
Another question, is possible to stop the solver after X iteration and
then restart maintaining the tabo list?
Reset the tabu list every so many iterations? Not yet. A patch to
AbstractTabuAccepter should be able to do that easily.
PS: Pls use [planner] in the subject of user mails.
ragards,
Marco
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