# License

This repository contains data from multiple sources with different licenses.

## Our Work (MIT)

Original integration, curation, and derived datasets are released under the MIT License:

- `world_languages_integrated.json` (integration of multiple sources)
- `language-families/` (curated family trees, PIE reconstructions)
- `lemmatization/` (historical lemma mappings)
- All `*_metadata.json` companion files

Copyright (c) 2026 Luke Steuber

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files, to deal in the Software
without restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies, 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.

## Glottolog (CC-BY-4.0)

Files: `glottolog_coordinates.json`, `glottolog_languoid.csv`

Hammarstrom, Harald & Forkel, Robert & Haspelmath, Martin & Bank, Sebastian. 2024.
Glottolog 5.0. Leipzig: Max Planck Institute for Evolutionary Anthropology.
https://glottolog.org

Licensed under Creative Commons Attribution 4.0 International (CC-BY-4.0).
https://creativecommons.org/licenses/by/4.0/

## WALS (CC-BY-4.0)

Files: `wals_languages.csv`, `wals_parameters.csv`, `wals_values.csv`

Dryer, Matthew S. & Haspelmath, Martin (eds.) 2013.
WALS Online (v2020). Leipzig: Max Planck Institute for Evolutionary Anthropology.
https://wals.info

Licensed under Creative Commons Attribution 4.0 International (CC-BY-4.0).
https://creativecommons.org/licenses/by/4.0/

## PHOIBLE (CC-BY-SA-3.0)

Files: `phoible.csv`

Moran, Steven & McCloy, Daniel (eds.) 2019.
PHOIBLE 2.0. Jena: Max Planck Institute for the Science of Human History.
https://phoible.org

Licensed under Creative Commons Attribution-ShareAlike 3.0 Unported (CC-BY-SA-3.0).
https://creativecommons.org/licenses/by-sa/3.0/

**Note:** The share-alike requirement means any derivative work incorporating PHOIBLE data
must also be released under CC-BY-SA-3.0 or a compatible license.

## Joshua Project (Public API)

Data in `world_languages_integrated.json` includes population and demographic data
from the Joshua Project public API (https://joshuaproject.net). Used under their
public API terms.

## Brown Corpus (Public Domain)

Files: `reference-corpora/brown_corpus_stats.csv`

Summary statistics derived from the Brown University Standard Corpus of Present-Day
American English. The Brown Corpus itself is in the public domain.