OptaPlanner
Choco
| OptaPlanner | Choco | |
|---|---|---|
| 30 | 4 | |
| 407 | 724 | |
| 4.7% | 0.8% | |
| 2.8 | 9.2 | |
| about 21 hours ago | 3 months ago | |
| Java | Java | |
| Apache License 2.0 | BSD 4-Clause "Original" or "Old" License |
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OptaPlanner
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OptaPlanner VS timefold-solver - a user suggested alternative
2 projects | 23 Jun 2023
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Resource Scheduling
However, if you need to solve constraints etc., see: https://www.optaplanner.org/
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Anything you wish there was an open source solution for?
Try looking for something built around Optaplanner - basically taking the end game of rostering and working backwards.
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Seeking Advice and Collaboration for an Open-Source Worker Cooperative Platform Project
OptaPlanner takes some of the items tracked in tool like Odoo and creates plans based on them. I.E. how do you manage shifts while juggling multiple constraints (Jerry can only work weekends, Jeff can only work afternoons, Jim can work weekends but only on double time, etc.)
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[Combinatorial Optimization] What is a good algorithm, or genre of algorithms that I should read up on for an optimization problem with a set of sets, where at least one element of each set is required?
There is a library out there called Optaplanner that is designed for optimization of NP complete problems. It is hard to tell if that is exactly what this is, but I think you should be able to use this regardless.
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Searching for something to schedule IT helpdesk shifts
Just stumbled upon https://www.optaplanner.org. Looks very interesting but also really overkill.
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Easy-to-use school scheduling software?
OptaPlanner - a generic scheduler.
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Non profit Healthcare clinic looking for self hosted or cheap cloud alternative employee shift scheduling app?
OptaPlanner
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Self-hosted schedulers?
I've never used it but it sounds like OptaPlanner may be a scheduler in the same vein?
- Algorithm for Assigning Flights to Planes
Choco
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Constraint Programming (2020)
There are quite a few out there. I played with gecode as well as https://choco-solver.org/ which I found intuitive and fun to use.
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How to Corrupt an SQLite Database File
I personally doesn't get surprised by POSIX to consider it's violating this "least surprise" amount.
Instead, for example Java has given me much more surprises, and at catastrophic levels. I was using Choco Solver [0] back in the day, and I created two instances of it, attached to different classes. Which is perfectly normal, right?
Somehow they've cross linked between these two instances, affected the results they have computed, and created persistent memory leaks which needed system reboots to claim back. Java should be immune to that, but no.
Preventing that needed to run only one instance of Choco, which limited my performance greatly. Luckily, the system had a queue/consumer structure, so running only one didn't need extensive changes.
[0]: https://choco-solver.org/
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Constraint Programming: Solving Sudoku with Choco Solver library
Sudoku is one of these types of problems, but it has very simple rules, so it’s a nice playground to try out different ways to solve graph colouring problems. This post outlines a solution using constraint programming with choco solver.
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backtrack-rs: combinatorial search library, help me improve it!
- Choco (https://choco-solver.org/): state of the art trailing solver, heavily tested, easy to get started with and actively maintained. Written in Java.
What are some alternatives?
or-tools - Google's Operations Research tools:
JaCoP - Java Constraint Programming solver
opennars - OpenNARS for Research 3.0+
vroom - Vehicle Routing Open-source Optimization Machine
Timefold Solver - The open source Solver AI for Java and Kotlin to optimize scheduling and routing. Solve the vehicle routing problem, employee rostering, task assignment, maintenance scheduling and other planning problems.