clpz
optaplanner-quickstarts
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| clpz | optaplanner-quickstarts | |
|---|---|---|
| 5 | 4 | |
| 172 | 27 | |
| - | - | |
| 4.4 | 4.7 | |
| 3 months ago | about 1 month ago | |
| Prolog | Java | |
| - | Apache License 2.0 |
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clpz
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Logic programming is overrated, at least for logic puzzles (2013)
As pointed out in the comments in the article, these kinds of logic puzzles are easier to solve using constraint programming than "regular" logic programming.
For example, see the solution to the Zebra Puzzle here: https://www.metalevel.at/prolog/puzzles which uses CLPZ[^1].
[^1]: https://github.com/triska/clpz
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Markus Triska Interview on Prolog
Scryer has the strings-as-lists-but-implemented-efficiently thing, possibly more strict ISO Prolog compatible syntax, and it may ship with a more advanced constraint library (I'm not clear on the relationship between SWI's clpfd and Scryer clpz).
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is it possible to have a reversable operation
None of these are full-fledged programming languages, however. They're limited to problems that lie in the polynomial hierarchy (A class which contains P and NP). Logic programming is generally only used to solve hard problems for which no good algorithm is known. Prolog also sort of fits this niche and it has a bunch of solvers integrated into it. Notably CLPFD which uses https://github.com/triska/clpz for constraint logic programming. Rosette (https://docs.racket-lang.org/rosette-guide/index.html) is another solver-based language. Except it uses lisp syntax (it's embedded in the Racket language). It uses Z3 as a solver (linked above for SMT theories)
- Ask HN: Do you use an optimization solver? Which one? Why? Do you like it?
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What is the difference between constraint solving and constraints programming?
Constraint programming I guess is when one uses a prolog library such as: https://github.com/triska/clpz
optaplanner-quickstarts
- Enhancing the Factorio experience with SAT solvers
- Ask HN: Do you use an optimization solver? Which one? Why? Do you like it?
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How to build an app that can auto generate a weekly and a monthly complex roster for my department?
The model classes aren't tricky... but you'll need to think about it.
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Anyone try to apply OR to videogames, such as, say, Factorio?
Source code: https://github.com/kiegroup/optaplanner-quickstarts/tree/8.5.x/quarkus-factorio-layout
What are some alternatives?
prolog-checkers - A Player vs AI game of checkers implemented in Prolog
or-tools - Google's Operations Research tools:
HiGHS - Linear optimization software
SSI - A Prolog Compiler written in Prolog.
intellij-quarkus - IntelliJ Quarkus Tools
kanren - An extensible, lightweight relational/logic programming DSL written in pure Python
OptaPlanner - Java Constraint Solver to solve vehicle routing, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.
python-mip - Python-MIP: collection of Python tools for the modeling and solution of Mixed-Integer Linear programs
csips - A pure-python integer programming solver
golomb-solver - Create Golomb rulers with constraint programming