OptaPlanner

OptaPlanner stopped active development in 2023. But it continues open source as Timefold Solver: solver.timefold.ai The old website is now hosted here to help legacy users: optaplanner.io See the history for more information: optaplanner.io/the-history-of…

OptaPlanner is the most popular open source Constraint Solver in Maven Central (the 98 TerraByte Java and Kotlin repository) according to MvnRepository: mvnrepository.com/open-source/co…

Solve a Vehicle Routing Problem with OptaPlanner to reduce driving time by 25%. youtube.com/watch?v=3Bgt4x…

Feedback from a user about CS: "I had to convert around 30 rules written in DRL to ConstraintStreams. After struggling at the beginning I started to like it more and more. At the end I really liked it. Thanks a lot for this awesome work!" Migration guide: optaplanner.org/download/upgra…

We'll publish the Devoxx Belgium schedule later this week. Basically @OptaPlanner will generate the schedule based on the received speakers availability and other soft/hard constraints we have defined. More details in this related Devoxx talk... youtu.be/GnnMHkY6vKk

Watch the latest episode of #CommunityCentral, where @dupliaka explains the power and benefits of @optaplanner youtu.be/A-TyjsHJTNM

How hard can it be to write a program to solve a simple lesson scheduling problem? Harder than you think. Watch @dupliaka and me try it with a Greedy algorithm, a Brute Force algorithm and an advanced Metaheuristic at @DevoxxPL. Full video: youtube.com/watch?v=ZEOf_G…

New blog: introducing the OptaPlanner Operator for Kubernetes-OpenShift optaplanner.org/blog/2022/06/0…

Video of my #DevoxxUK talk on Artificial Intelligence planning with @OptaPlanner (open source, Apache License, java). It includes Live Coding, a scheduling puzzle and the minimal number of atoms in the known universe. youtube.com/watch?v=l7gmOA…

An interesting article on how to optimize scheduling tasks of different durations and requiring different skills with #OptaPlanner: devapo.io/blog/optaplann…

Going to @devnexus in Atlanta next week? Don't miss Jason Porter's (@lightguardjp) talk about AI planning and schedule optimization with @OptaPlanner. devnexus.org/presentations/…

OptaPlanner made it on @baeldung 's #AI in @Java list. Is planning optimization (vehicle routing, employee rostering, maintenance scheduling, ...) going mainstream? baeldung.com/java-ai

Do you want to host your @OptaPlanner application in the cloud? Just import the Git url in @OpenShift (open source container platform build on Kubernetes). This already works for all OptaPlanner's use case quickstarts. Give it a try. youtube.com/watch?v=kFoaf6…

Order picking in supermarkets and warehouses: the optimal routes for carts and trolleys to collect shopping list orders. Video: youtube.com/watch?v=784Au4…

For full clarity: One quickstart does have log4j-api and its slf4j bridge in their dependency tree transitively, but neither of these jars are vulnerable to Log4jShell, because they don't contain the Log4J implementation. So it's all safe.

OptaPlanner does not depend on #Log4J. It depends on SLF4J (the simple logging facade), so it brings in no actual logging implementation. The OptaPlanner examples/quickstarts typically use Logback as the logging impl. SLF4J/Logback has no known CVEs. None of them use Log4J.

Get started quickly testing your constraints in OptaPlanner. Start a basic test in about five minutes by utilizing the information in this KIE Drop. youtu.be/I3J7jY3xZkw

@GeoffreyDeSmet @McCrews Only schools. At the start of school year/semester, each school requested swimming lanes for all classes. Manual planning could no longer fulfill all requests. Optaplanner solution got swim lane occupation down to 60~70%.

Artificial Intelligence with #Quarkus and #OptaPlanner for @DevoxxUA To assign 400 lessons to 400 slots (40 timeslots across 10 rooms) there are 10^1080 combinations. A 99% improvement is a rounding error. youtu.be/HVDPxebpSvg?t=… #orms #ai

Got an organizational problem, with constraints that can’t budge? #OptaPlanner uses #AI and algorithms to find the best solution to your challenge. #RedHat guest @donato_m tells us all the ways OptaPlanner can be utilized in this episode of #DeployFriday bit.ly/3DHxDhM