OptaPlanner now has it’s own google groups for discussions: http://www.optaplanner.org/community/forum.html
Please use the correct group, to reduce the noise to signal ratio. Also just a reminder this list has also moved to Google Groups: http://drools.org/community/forum.html https://groups.google.com/forum/#!forum/drools-usage Mark On 20 Aug 2014, at 22:42, paavanm <paavan.mat...@clairvoyantsoft.com> wrote: > I have a relatively simple question. How do I have OptaPlanner use my own > initialized solution as a starting point instead of having a construction > heuristic create one? Does this have to be done with a custom SolverPhase? > > A little more detail on what I'm trying to do: I am scheduling a series of > classes and related activities on a calendar. Let's say I have some class > BA101 that occurs several times a week (these classes are immovable > entities). There are homeworks, exams etc. associated with these classes > which I need to schedule. E.g. on Feb 1st, a homework might be due, or on > Mar 1st, there might be an exam. So I need to schedule time to do the > homework or time to study for the exam. My initial solution for this would > be very simple: I would schedule the homework/study time at the same time of > the class itself, and let optaplanner move it around till it meets my hard & > soft constraints. > > However, when I tried to do that (i.e. give my homework/study tasks an > actual start time instead of just leaving the start time as null), > OptaPlanner fell right through without actually making any moves to find the > best score. How do I do this? This is my config at the moment, pretty basic > (tried this with & without the construction heuristic; same result): > > <?xml version="1.0" encoding="UTF-8"?> > <solver> > > > > <solutionClass>com.copilot.optaplanner.domain.ActivityScheduler</solutionClass> > > <planningEntityClass>com.copilot.optaplanner.domain.Activity</planningEntityClass> > > > <scoreDirectorFactory> > <scoreDefinitionType>HARD_SOFT</scoreDefinitionType> > > <simpleScoreCalculatorClass>com.copilot.optaplanner.solver.score.ActivitySchedulingSimpleScoreCalculator</simpleScoreCalculatorClass> > </scoreDirectorFactory> > > > <termination> > <maximumSecondsSpend>10</maximumSecondsSpend> > </termination> > > <constructionHeuristic> > <constructionHeuristicType>FIRST_FIT</constructionHeuristicType> > </constructionHeuristic> > > <localSearch> > <acceptor> > <entityTabuSize>7</entityTabuSize> > </acceptor> > <forager> > <acceptedCountLimit>1000</acceptedCountLimit> > </forager> > </localSearch> > > </solver> > > Thanks for any assistance. > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Starting-optaplanner-with-your-own-initialized-solution-tp4030697.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users
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