minizinc-benchmarks | A suite of MiniZinc benchmarks

 by   MiniZinc C Version: Current License: MIT

kandi X-RAY | minizinc-benchmarks Summary

kandi X-RAY | minizinc-benchmarks Summary

minizinc-benchmarks is a C library. minizinc-benchmarks has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This is a collection of MiniZinc benchmark instances including instances from the 2008-2012 MiniZinc challenges. All models and data files have been placed in the public domain and are available under the MIT license. There is further information in the README and LICENSE files.
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              minizinc-benchmarks has a low active ecosystem.
              It has 65 star(s) with 28 fork(s). There are 16 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 3 open issues and 1 have been closed. On average issues are closed in 58 days. There are 4 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of minizinc-benchmarks is current.

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              minizinc-benchmarks has 0 bugs and 0 code smells.

            kandi-Security Security

              minizinc-benchmarks has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              minizinc-benchmarks code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              minizinc-benchmarks is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

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              minizinc-benchmarks releases are not available. You will need to build from source code and install.

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            Community Discussions

            QUESTION

            How does the minizinc pentominoes regular constraint example work?
            Asked 2020-Oct-06 at 13:05

            The minizinc benchmarks repository contains several pentomino examples.

            Here is the data for the first example:

            ...

            ANSWER

            Answered 2020-Oct-06 at 13:05

            Both the original MiniZinc model and the one in the repository in the comment are ones I wrote. While my licentiate thesis and the linked repository use regular expressions to express the constraints, the original MiniZinc challenge model was written when MiniZinc only had support for DFA inputs, as this is what the regular constraint inside solvers actually use (§). The DFAs were in fact generated by taking the Gecode model and writing a small program (lost to time) that printed out the DFA for the regular expressions in the Gecode example file using the Gecode regular expression to DFA translation. A nice thing about the translation is that for a piece that has some symmetry, the DFA minimization will remove the symmetries. The instance generator linked was written this year, and uses the modern MiniZinc feature that accepts regular expressions. It was just easier to write that way.

            So, in order to understand the long list of numbers, you have to view it as a DFA. The list represent a matrix, where the indexes are the states and the next input, and the values are the next state to go to. The other arguments to the regular constraint indicate the number of states, the number of symbols in the alphabet, and the starting and accepting states of the DFA.

            As for the 6's at the end of the matrix, these are end-of-line markers. They are there to make sure that a piece is not split apart. Consider the simple piece XXX on a 4 by 4 board with no other pieces (so X is 1, and empty is 0). With the expression 0*1110*, all placements of the piece are modeled, but so are placements like

            Source https://stackoverflow.com/questions/62812397

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

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            You can download it from GitHub.

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