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<blockquote type="cite">Later on, a GUI should be designed to allow
a user to interact<br>
with the model.</blockquote>
That's what Drools Guvnor is for.<br>
Design your constraints in Guvnor, and solve your NP-hard problem
with Planner.<br>
<br>
The integration in Planner for Guvnor needs to be improved and
documented though,<br>
but people have already made it work by applying a small hack.<br>
<br>
Op 29-03-11 15:25, David Faulkner schreef:
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<div dir="ltr"><font color="#000000" face="Tahoma" size="2">Andrei,</font></div>
<div dir="ltr"> </div>
<div dir="ltr"><font face="tahoma" size="2">You should take a look
at Drools Planner, which is designed to provide a framework
for solving NP-hard problems using local search. I don't know
how "user-friendly" you would consider it to be and there's no
GUI, but it sounds like it may be a good fit for you. </font></div>
<div dir="ltr"> </div>
<div>
<div><font face="Tahoma" size="2">David Faulkner</font></div>
<div><font face="tahoma" size="2"><a moz-do-not-send="true"
href="mailto:david.faulkner@amentra.com">david.faulkner@amentra.com</a></font></div>
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<font face="Tahoma" size="2"><b>From:</b>
<a class="moz-txt-link-abbreviated" href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a>
[<a class="moz-txt-link-abbreviated" href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a>] On Behalf Of Andrei
Neboian [<a class="moz-txt-link-abbreviated" href="mailto:andrei.neboian@googlemail.com">andrei.neboian@googlemail.com</a>]<br>
<b>Sent:</b> Monday, March 28, 2011 5:03 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<b>Subject:</b> [rules-users] Using Drools to model and solve
a production scheduling problem with changeovers<br>
</font><br>
</div>
<div>Dear All,<br>
<br>
I am looking for a user-friendly platform which would allow me
to model and solve a<br>
<b>production scheduling problem with changeover times</b>.
Since it's an NP-Hard<br>
problem, I am getting convinced that a CP formulation would be
most<br>
appropriate. Later on, a GUI should be designed to allow a user
to interact<br>
with the model.<br>
<br>
Is "drools" a proper platform for this? Are there any examples
of this type of problem solved with Drools?<br>
<br>
I need to tackle a problem with 4 parallel machines, over 100
jobs and 100 changeovertypes (sequence dependant setup times
between each job).<br>
<br>
I would appreciate any help on this! Thanks<br>
<br>
Kind Regards,<br>
Andrei </div>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
With kind regards,
Geoffrey De Smet</pre>
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