Відкриті джерела

Джерела та ліцензії

Повідомлення включені в застосунок і доступні без інтернету в політиці конфіденційності.

Вибрані слова й адаптовані рівні (CSV). Похідна компіляція — CC BY-SA 4.0; атрибуції та первісні умови CEFR-J збережено нижче. Ця ліцензія не поширюється на код застосунку.

Джерела та ліцензії English Слова

CEFR-J Wordlist Version 1.5 — Yukio Tono, Tono Laboratory, Tokyo University of Foreign Studies. Дозволено дослідницьке й комерційне використання з належним посиланням.
http://www.cefr-j.org/download.html
https://github.com/vitwits/english-wordlist-cefr-a1-c2
Рівні зіставлено за заголовними словами; переклади та навчальний контекст додано окремо. CEFR-J не підтверджує якість чи рівень цього застосунку.

Octanove Vocabulary Profile C1/C2 1.0 — Octanove Labs / Open Language Profiles.
https://github.com/openlanguageprofiles/olp-en-cefrj
Creative Commons Attribution-ShareAlike 4.0 International:
https://creativecommons.org/licenses/by-sa/4.0/
Адаптація: вибрані рівні приєднано до навчальних заголовних слів. Похідні дані рівнів Octanove доступні на тих самих умовах CC BY-SA 4.0. Ліцензія цих даних не поширюється на програмний код застосунку.

LexiCore-5000 v1.0.0 — X-Trivle / LexiCore maintainers, © 2026.
https://github.com/X-Trivle/LexiCore
Creative Commons Attribution 4.0 International:
https://creativecommons.org/licenses/by/4.0/
Frequency evidence derived from FineWeb, FineWeb-Edu, Wikipedia (20231101.en), OPUS-OpenSubtitles 2024 and Common Crawl CC-MAIN-2026-34.
Адаптація: відібрано 2500 відсутніх у початковому наборі слів, перенесено порядок і рівні; українські переклади й приклади додано окремо. Оригінальні корпусні тексти та матеріали платного LexiDeck не включено.
Повідомлення автора: https://github.com/X-Trivle/LexiCore/blob/main/NOTICE.md

IPA Dictionary (en_US) — dohliam / open-dict-data.
https://github.com/open-dict-data/ipa-dict
Адаптація: відібрано американські транскрипції навчальних слів. Джерело: cmudict-ipa (Lingliang Zhang), на основі CMU Pronouncing Dictionary; ліцензійні повідомлення нижче.

Free Dictionary API:
https://dictionaryapi.dev/
https://github.com/meetDeveloper/freeDictionaryAPI
Необов’язкові записи вимови завантажуються за запитом; вони не включені до дистрибутива застосунку. Системний синтез мовлення iOS використовується як резерв.

LexiCore-NOTICE.md
# Notice

LexiCore-5000 © 2026 LexiCore maintainers.
The dataset files and the code in this repository are licensed under
**CC BY 4.0** (see [LICENSE](LICENSE)).

This file lists everything in this repository that is **not** ours to license, and what you must
do if you redistribute. It is engineering documentation, not legal advice.

## 1. What CC BY 4.0 covers here

* `data/` — the 5,000-word selection, its ordering, the released comparison sets, and the derived
tables (`data/derived/`), i.e. the aggregate results of counting public corpora.
* `src/`, `tests/`, `scripts/`, `Makefile`, `pyproject.toml` — the reference code.
* `docs/`, `README.md`, `CHANGELOG.md`, `CONTRIBUTING.md` and the other prose, **except** the
items in §3.

Required attribution (a reasonable form under CC BY 4.0 §3(a)):

> LexiCore-5000 (v1.0.0), https://github.com/X-Trivle/LexiCore — CC BY 4.0.
> Frequency evidence derived from FineWeb, FineWeb-Edu, Wikipedia (20231101.en),
> OPUS-OpenSubtitles 2024 and Common Crawl CC-MAIN-2026-34.

Indicate if you changed anything, and keep a link to this notice.

## 2. Upstream material — original terms apply

Nothing here transfers rights in the corpora or the anchor lists. If you redistribute the list
together with data from these sources, their terms follow you.

| material | owner / source | licence | used for |
|---|---|---|---|
| FineWeb `sample/10BT` | Hugging Face | ODC-By 1.0 | counting |
| FineWeb-Edu-score-2 | Hugging Face | ODC-By 1.0 | counting |
| Wikipedia 20231101.en | Wikimedia Foundation | CC BY-SA 3.0 / GFDL | counting |
| OPUS-OpenSubtitles v2024 | Tiedemann / OPUS, CSC | OpenSubtitles terms + attribution | counting |
| Common Crawl CC-MAIN-2026-34 | Common Crawl | Common Crawl Terms of Use | counting |
| CEFR-J Wordlist v1.5 | Tono Lab, TUFS ([cefr-j.org](http://www.cefr-j.org/download.html)) | free for research & commercial use **with citation** | 3,898 levels |
| Octanove Vocabulary Profile C1/C2 v1.0 | Open Language Profiles | CC BY-SA 4.0 | 665 levels |
| NGSL / NAWL / BSL 1.0x | Browne, Culligan, Phillips | CC BY-SA 4.0 | utility term, gates |
| BNC/COCA 25k bands | wordfrequency.info | free use with attribution | `bnc_band`, baseline |
| wordfreq v3.x | Rob Speer | Apache-2.0 code / CC BY-SA 4.0 data | 2021 Zipf baseline |
| Oxford 5000 reference | Oxford University Press (mirror: `nalgeon/words`) | **not licensed for redistribution** — comparison only | external comparison |
| Princeton WordNet 3.x, NLTK `words`/`words_alpha`, CMUdict 0.7b | Princeton / NLTK / CMU / dwyl | WordNet licence / public domain / BSD-like / MIT | validity gates |

**CC BY-SA interaction.** Wikipedia, Octanove, NGSL/NAWL/BSL are *share-alike*. Aggregated counts
and independently written documentation are not "adaptations" of those works, which is why the
release's CC BY 4.0 grant is offered over the selection and the code. If you instead publish a
derivative **of an anchor list itself** (e.g. a reformatted NGSL sheet), the BY-SA terms attach to
that derivative. Keep your artefacts separable.

**Not redistributed.** None of the files in the table above is copied into this repository — only
their numeric conclusions, cited by URL and by SHA-256 of the exact file the release read
(`data/MANIFEST.json → anchors_provenance`).

## 3. Excluded from the CC BY 4.0 grant

`ecosystem/lexideck-multilingual/assets/` — screenshots and other material belonging to the
companion product **LexiDeck Multilingual**. They are included for identification and illustration
of that product, and are **not** part of the open dataset release. Ask the product owner before
reusing them elsewhere. Nothing in §1 or §2 of this notice grants rights in that product, its
audio, its illustrations, its translations or its paid content.

## 4. Trademarks and CEFR

"CEFR" is a Council of Europe framework; level labels here are descriptive, not endorsements.
"Oxford 5000" belongs to Oxford University Press and is used only as an external comparison point.

## 5. How the numbers were produced

See [docs/METHODOLOGY.md](docs/METHODOLOGY.md) and
[docs/KNOWN_ISSUES.md](docs/KNOWN_ISSUES.md) — including the two axes (recency, POS) that are
**not** trustworthy in 1.0.0.

ipa-dict-MIT.txt
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.

cmudict-ipa-MIT.txt
The MIT License (MIT)

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

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
The contents of this file are deemed to be source code.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.

This work was supported in part by funding from the Defense Advanced
Research Projects Agency, the Office of Naval Research and the National
Science Foundation of the United States of America, and by member
companies of the Carnegie Mellon Sphinx Speech Consortium. We acknowledge
the contributions of many volunteers to the expansion and improvement of
this dictionary.

THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.