License

The Minion library is licensed under the MIT License. The MIT License is a permissive open-source license that allows you to freely use, modify, and distribute the software, provided that the original copyright notice and the license are included in all copies or substantial portions of the software.

MIT License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LBFGSpp Library

Minion uses the LBFGSpp library (https://github.com/yixuan/LBFGSpp), which is also licensed under the MIT License. The use of this library in Minion follows the same licensing terms, which allow for free usage, modification, and distribution, provided that the copyright notice and license are included.

For more information about the LBFGSpp library, please refer to its official repository.

Modified Code from Sugathan GitHub Repository

Some algorithms (NL-SHADE-RSP, j2020, LSRTDE) implemented in the Minion library and all the CEC benchmark problems are based on the original code published by Suganthan on GitHub (https://github.com/P-N-Suganthan). This code has been modified to fit the Minion API. However, the original GitHub repository does not include a license file, and as such, the licensing terms for the original code are not explicitly defined.

Since the code was publicly available on GitHub, we assume it is available for use in accordance with the standard practices for open-source code. If the original author has any licensing terms that we are unaware of, we are open to discussions and will take the necessary steps to comply with any applicable requirements.

If you are concerned about the licensing of this code, we recommend contacting the author or repository owner directly for clarification.

Conclusion

In summary, the Minion library is licensed under the MIT License, and we use the lbfgspp library, which is also under the MIT License. The algorithms based on the Sugathan GitHub repository have been modified to fit the Minion API, but their licensing terms are unclear due to the absence of a license file. We encourage users to ensure compliance with open-source licensing standards and to reach out to the original authors for clarification if needed.