Chips-n-Salsa: A Java Library of Customizable, Hybridizable, Iterative, Parallel, Stochastic, and Self-Adaptive Local Search Algorithms
Chips-n-Salsa: A Java Library of Customizable, Hybridizable, Iterative, Parallel, Stochastic, and Self-Adaptive Local Search Algorithms - Published in JOSS (2020)
https://github.com/cicirello/chips-n-salsa
Keywords
adaptive discrete-optimization evolutionary-computation genetic-algorithm hbss hill-climbing java local-search metaheuristics multithreading mutation optimization parallel-computing permutations randomized-heuristics scheduling search-algorithm simulated-annealing stochastic-sampling vbss
Keywords from Contributors
transforms measur archiving social-network observation conversion generic animals projection robot
Last synced: 2 months ago
JSON representation
Acceptance Criteria
- Revelant topics? true
- External users? true
- Open source license? true
- Active? true
- Fork? false
Repository metadata
A Java library of Customizable, Hybridizable, Iterative, Parallel, Stochastic, and Self-Adaptive Local Search Algorithms
- Host: GitHub
- URL: https://github.com/cicirello/chips-n-salsa
- Owner: cicirello
- License: gpl-3.0
- Created: 2020-06-17T20:43:20.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2025-10-21T00:45:49.000Z (2 months ago)
- Last Synced: 2025-10-25T00:48:58.233Z (2 months ago)
- Topics: adaptive, discrete-optimization, evolutionary-computation, genetic-algorithm, hbss, hill-climbing, java, local-search, metaheuristics, multithreading, mutation, optimization, parallel-computing, permutations, randomized-heuristics, scheduling, search-algorithm, simulated-annealing, stochastic-sampling, vbss
- Language: Java
- Homepage: https://chips-n-salsa.cicirello.org/
- Size: 16 MB
- Stars: 70
- Watchers: 1
- Forks: 39
- Open Issues: 0
- Releases: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
- Citation: CITATION.cff
- Zenodo: .zenodo.json
Owner metadata
- Name: Vincent A. Cicirello
- Login: cicirello
- Email:
- Kind: user
- Description: Vincent A. Cicirello is a researcher in AI, evolutionary computation, and swarm intelligence.
- Website: https://www.cicirello.org/
- Location: Galloway, NJ
- Twitter:
- Company: Stockton University
- Icon url: https://avatars.githubusercontent.com/u/762030?u=1cad2b960f6d6bdfb9f768a1f51474b986143327&v=4
- Repositories: 53
- Last ynced at: 2025-09-16T19:35:32.356Z
- Profile URL: https://github.com/cicirello
GitHub Events
Total
- Create event: 50
- Release event: 2
- Issues event: 6
- Watch event: 9
- Delete event: 44
- Issue comment event: 7
- Push event: 93
- Pull request review event: 33
- Pull request event: 82
- Fork event: 3
Last Year
- Create event: 48
- Release event: 2
- Issues event: 6
- Watch event: 8
- Delete event: 42
- Issue comment event: 7
- Push event: 90
- Pull request review event: 32
- Pull request event: 78
- Fork event: 3
Committers metadata
Last synced: 2 months ago
Total Commits: 2,002
Total Committers: 4
Avg Commits per committer: 500.5
Development Distribution Score (DDS): 0.129
Commits in past year: 64
Committers in past year: 2
Avg Commits per committer in past year: 32.0
Development Distribution Score (DDS) in past year: 0.219
| Name | Commits | |
|---|---|---|
| Vincent A. Cicirello | c****o | 1743 |
| dependabot[bot] | 4****] | 257 |
| Nicholas Nadeau, Ph.D., P.Eng | n****u | 1 |
| Nicholas Nadeau | n****u@g****m | 1 |
Issue and Pull Request metadata
Last synced: 2 months ago
Total issues: 54
Total pull requests: 315
Average time to close issues: 19 days
Average time to close pull requests: about 22 hours
Total issue authors: 4
Total pull request authors: 3
Average comments per issue: 0.07
Average comments per pull request: 0.48
Merged pull request: 292
Bot issues: 1
Bot pull requests: 235
Past year issues: 4
Past year pull requests: 87
Past year average time to close issues: 5 days
Past year average time to close pull requests: about 10 hours
Past year issue authors: 2
Past year pull request authors: 2
Past year average comments per issue: 0.0
Past year average comments per pull request: 0.16
Past year merged pull request: 75
Past year bot issues: 1
Past year bot pull requests: 74
Top Issue Authors
- cicirello (51)
- DarioK98 (1)
- dependabot[bot] (1)
- N-Wouda (1)
Top Pull Request Authors
- dependabot[bot] (235)
- cicirello (79)
- DarioK98 (1)
Top Issue Labels
- refactor (24)
- testing (20)
- bug (17)
- enhancement (3)
- cicd (3)
- dependencies (3)
- java (2)
- invalid (1)
- github_actions (1)
- documentation (1)
Top Pull Request Labels
- dependencies (238)
- java (232)
- refactor (30)
- testing (17)
- documentation (15)
- bug (13)
- cicd (10)
- github_actions (8)
- enhancement (6)
- invalid (1)
- hacktoberfest-accepted (1)
Package metadata
- Total packages: 3
- Total downloads: unknown
- Total dependent packages: 3 (may contain duplicates)
- Total dependent repositories: 5 (may contain duplicates)
- Total versions: 144
proxy.golang.org: github.com/cicirello/chips-n-salsa
- Homepage:
- Documentation: https://pkg.go.dev/github.com/cicirello/chips-n-salsa#section-documentation
- Licenses: gpl-3.0
- Latest release: v7.0.2+incompatible (published 8 months ago)
- Last Synced: 2025-10-26T01:23:10.316Z (2 months ago)
- Versions: 50
- Dependent Packages: 0
- Dependent Repositories: 0
-
Rankings:
- Dependent packages count: 6.508%
- Average: 6.726%
- Dependent repos count: 6.945%
proxy.golang.org: github.com/cicirello/Chips-n-Salsa
- Homepage:
- Documentation: https://pkg.go.dev/github.com/cicirello/Chips-n-Salsa#section-documentation
- Licenses: gpl-3.0
- Latest release: v7.0.2+incompatible (published 8 months ago)
- Last Synced: 2025-10-26T01:23:37.218Z (2 months ago)
- Versions: 50
- Dependent Packages: 0
- Dependent Repositories: 0
-
Rankings:
- Dependent packages count: 6.508%
- Average: 6.726%
- Dependent repos count: 6.945%
repo1.maven.org: org.cicirello:chips-n-salsa
Chips-n-Salsa is a Java library of customizable, hybridizable, iterative, parallel, stochastic, and self-adaptive local search algorithms. The library includes implementations of several stochastic local search algorithms, including simulated annealing, hill climbers, as well as constructive search algorithms such as stochastic sampling. Chips-n-Salsa now also includes genetic algorithms as well as evolutionary algorithms more generally. The library very extensively supports simulated annealing. It includes several classes for representing solutions to a variety of optimization problems. For example, the library includes a BitVector class that implements vectors of bits, as well as classes for representing solutions to problems where we are searching for an optimal vector of integers or reals. For each of the built-in representations, the library provides the most common mutation operators for generating random neighbors of candidate solutions, as well as common crossover operators for use with evolutionary algorithms. Additionally, the library provides extensive support for permutation optimization problems, including implementations of many different mutation operators for permutations, and utilizing the efficiently implemented Permutation class of the JavaPermutationTools (JPT) library. Chips-n-Salsa is customizable, making extensive use of Java's generic types, enabling using the library to optimize other types of representations beyond what is provided in the library. It is hybridizable, providing support for integrating multiple forms of local search (e.g., using a hill climber on a solution generated by simulated annealing), creating hybrid mutation operators (e.g., local search using multiple mutation operators), as well as support for running more than one type of search for the same problem concurrently using multiple threads as a form of algorithm portfolio. Chips-n-Salsa is iterative, with support for multistart metaheuristics, including implementations of several restart schedules for varying the run lengths across the restarts. It also supports parallel execution of multiple instances of the same, or different, stochastic local search algorithms for an instance of a problem to accelerate the search process. The library supports self-adaptive search in a variety of ways, such as including implementations of adaptive annealing schedules for simulated annealing, such as the Modified Lam schedule, implementations of the simpler annealing schedules but which self-tune the initial temperature and other parameters, and restart schedules that adapt to run length.
- Homepage: https://chips-n-salsa.cicirello.org/
- Documentation: https://appdoc.app/artifact/org.cicirello/chips-n-salsa/
- Licenses: GPL-3.0-or-later
- Latest release: 7.0.2 (published 8 months ago)
- Last Synced: 2025-10-26T01:22:46.563Z (2 months ago)
- Versions: 44
- Dependent Packages: 3
- Dependent Repositories: 5
-
Rankings:
- Dependent repos count: 10.836%
- Dependent packages count: 17.328%
- Average: 21.816%
- Forks count: 26.885%
- Stargazers count: 32.215%
Dependencies
- org.cicirello:core 2.2.2
- org.cicirello:jpt 4.0.0
- org.cicirello:rho-mu 2.3.2
- org.junit.jupiter:junit-jupiter 5.8.2 test
- actions/checkout v3 composite
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- actions/upload-artifact v3 composite
- cicirello/jacoco-badge-generator v2 composite
- actions/checkout v3 composite
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- github/codeql-action/analyze v2 composite
- github/codeql-action/autobuild v2 composite
- github/codeql-action/init v2 composite
- actions/checkout v3 composite
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- cicirello/generate-sitemap v1 composite
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- actions/checkout v3 composite
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- actions/checkout v3 composite
- actions/setup-java v3 composite
- actions/checkout v3 composite
- actions/setup-java v3 composite
Score: 7.7142311448490855