# FrugalCast licence

Copyright (c) 2026 Cyril Voyant, Mines Paris – PSL.

FrugalCast is free for research, teaching and any other **non-commercial** use, provided you cite it:

> Voyant, C. (2026). FrugalCast: a browser benchmark of frugal forecasting models with prediction intervals. Mines Paris – PSL. https://frugalcast.cyrilvoyant.com/

## Code

The code (`engine.js`, `app.js`, `worker.js`, `kalpha.js`, `papers.js`, `style.css`, `index.html`) is under the **PolyForm Noncommercial License 1.0.0**: https://polyformproject.org/licenses/noncommercial/1.0.0/

Required Notice: Copyright (c) 2026 Cyril Voyant (https://www.cyrilvoyant.com)

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## Texts, figures and documentation

The texts, figures, `llms.txt` and `API.md` are under **Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)**: https://creativecommons.org/licenses/by-nc/4.0/

## Commercial use

Commercial use (paid services, products, consultancy) needs written permission from the author.

## Third-party notices

The methods follow published papers and earlier open code by the same author and co-authors. These are under the MIT License, whose notices are kept here:

- **PV_ELM_pred** (ELM variants): MIT License, Copyright (c) 2026 Martin Leiva, Xavier Silvani, Gilles Notton, Cyril Voyant et al. https://doi.org/10.5281/zenodo.21487267
- **ARTU** (`kalpha.js` holds its K–α tables): MIT License, Copyright (c) 2021 Cyril Voyant.
- **cyclostationary-forecasting-matlab** (BLEND, CLIPER, Holt-Winters, Theta, PAR): MIT License, Copyright (c) 2026 Cyril Voyant. https://doi.org/10.5281/zenodo.18812334
- **nice-metrics** (NICE^k): MIT License. https://doi.org/10.5281/zenodo.23562549

> 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.

Those repositories stay under MIT. The NonCommercial terms apply only to FrugalCast itself.

## Example data

`example.js`: EDF SEI open data, Corsica, hourly electricity production.
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