On 07-05-14 18:22, Hagai wrote: > I am implementing a vehiclerouting like solution with OptaPlanner > 6.0.1.Final. > According to the documentation for continuous planning, the way to 'lock' > parts of the solution is by declaring a movableEntitySelectionFilter on the > planning entity: Section 14.3.1. Immovable planning entities. > However, this does not work well with chained entities where parts of the > solution is calculated, like in the vehiclerouting example. > > For example, let's assume the following chains, where [Customer A] and > [Customer C] are immovable: > [Vehicle 1] <- *[Customer A]* <- [Customer B] > [Vehicle 2] <- *[Customer C]* <- [Customer D] > > Even if we filter immovable entities, a move to set the variable [Vehicle 2] > as previous standstill to [Customer B] can be selected with the following > result that changes the immovable entity [Customer C]: > [Vehicle 1] <- *[Customer A]* > [Vehicle 2] <- [Customer B] <- *[Customer C]* <- [Customer D] > > A workaround is to filter moves with immovable entities as well as moves > with immovable variables (variables are also entities). However, this can > only work when immovable entities are placed at the beginning of chines > before any movable entities. > > Is there a better way to implement immovable planning entities for vehicle > routing problem?
Can you report this in a jira? As part of fixing that jira, I 'll add the ability to lock entities in the example TSP or VRP (like it's possible in course scheduling). > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/How-to-implement-immovable-planning-entities-for-vehicle-routing-problem-tp4029467.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 > _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
