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by jmalmen 900 days ago
Super cool! Built something similar a few years back to assign kids to boats on a sailing camp using Google's OR Tools. Don't recommend OR Tools, solver was super slow vs cplex but didn't find any good OS solver. I used two objectives in my objective function to ensure someone didn't get left out, probably need to do something similar for the prioritization in the roadmap?

https://github.com/jonasmalm/lakritsrot
1 comments
teejae 900 days ago
Yea, I went with Optaplanner, which is definitely more "user friendly".

Prioritization of parties is on the roadmap, related to table ranking. Were you thinking of prioritization in a different manner?

How were you thinking about "someone getting left out"?

Thanks for the thoughts!

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l33tman 900 days ago
Do any of you happen to have any thoughts wrgds to OR-tools vs optaplanner? I've been trying to use OR-tools for a vehicle routing problem (with lots of constraints) and found it is really bad at finding solutions in our case, and it has only auto-gen documentation more or less, very sparse set of examples and a single dev supporting on the forums it seems (still thankful for that it's open source and HAS some support!).
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ge0ffrey 900 days ago
Take a look at the two Timefold (continuation/fork of OptaPlanner, open source Apache License) quickstarts for vehicle routing: https://github.com/TimefoldAI/timefold-quickstarts/tree/stab...

We regularly answer questions on StackOverflow if you run into any issues with it.

Disclaimer: I am part of the team behind OptaPlanner/Timefold.

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