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Op 19-10-11 15:00, Guilherme Kunigami schreef:
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In this use case, that is probably a bad idea in my
experience. Why? Well I hope this makes any sense:<br>
<i>You need to allow the optimization algorithms to break it
now and then to tunnel through a bad search space into
another good search space.</i><br>
If it doesn't, don't worry.</div>
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<div>Hmm, I think I understood it. Allowing infeasible solutions
may help to scape from local minima in the space of feasible
solutions for example.</div>
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Yep :)
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<div><font face="'courier new', monospace">rule "Avoid
conflicting activities"</font></div>
<div><font face="'courier new', monospace">when </font></div>
<div><font face="'courier new', monospace"><span
style="white-space: pre-wrap;"> </span>Assignment($room1
: room, $act1: activity, $id : <a
moz-do-not-send="true"
href="http://activity.id/" target="_blank">activity.id</a>)</font></div>
<div><font face="'courier new', monospace"><span
style="white-space: pre-wrap;"> </span>Assignment(room==
$room1, room != null, $act2 : activity, <a
moz-do-not-send="true"
href="http://activity.id/" target="_blank">activity.id</a> >
$id)</font></div>
<div><font face="'courier new', monospace"><span
style="white-space: pre-wrap;"> </span>Conflict(act1
== $act1, act2 == $act2)</font></div>
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I would put Conflict first. But try it this way too and let
me know which works better ;) I don't know.<br>
Stated differently: Instead of checking every 2 simultaneous
assignments if they are a conflict,<br>
I would check if every 2 conflict assignments are
simultaneous (like in examinationScoreRules.drl).
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<div>Ok! I will perform some stress tests to verify which one
works better.</div>
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Nice, please report your results to this mailing list. It doesn't
matter if they are worse, better or equal: it's interesting to know.<br>
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Look for "stepLimit" in the examples to see how I do very short
stress tests when adding extra constraints.<br>
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