授權與致謝
JP Shadow builds on several open datasets and libraries. We are grateful to their authors and comply with the license and attribution terms below.
Datasets
| Component | Version | License | Usage in JP Shadow |
|---|---|---|---|
| JMdict / JMnedict The JMdict/EDICT dictionary files are the property of the Electronic Dictionary Research and Development Group (EDRDG), and are used in conformance with the Group's licence. | 2026-05 | EDRDG Share-alike | Runtime dictionary lookup |
| JmdictFurigana Derived from JMdict/EDICT (see above). Additional processing by Doublevil. | 2026-05 | EDRDG Share-alike | Reading/furigana alignment |
| Leipzig Corpora Collection (Japanese) Based on downloadable corpora from the Leipzig Corpora Collection. Cite: D. Goldhahn, T. Eckart and U. Quasthoff, LREC 2012. | 2010 | CC BY | Word frequency ranking |
| Kanjium pitch accent data The pitch accent notation, verb particle data, phonetics, homonyms and other additions or modifications to EDICT, KANJIDIC or KRADFILE were provided by Uros O. through his free database. | 2026-05 | CC BY-SA 4.0 Share-alike | Pitch accent lookup |
| つつじ (Tsutsuji) — 日本語機能表現辞書 (c) Suguru Matsuyoshi and Satoshi Sato, 2008. 松吉俊, 佐藤理史, 宇津呂武仁.「日本語機能表現辞書の編纂」. 自然言語処理, Vol.14, No.5, pp.123-146, 2007. http://doi.org/10.5715/jnlp.14.5_123 | 1.1 (distribution 1.1u) | CC BY-SA 4.0 Share-alike | Grammar-candidate mining (functional-expression surface-form index; supplements the 50 regex-based grammarPatterns.json candidates, does not replace them) |
| jlpt-word-list | — | MIT | JLPT vocabulary bucket lookup |
| JMDict_Extended JLPT index Derived from JMdict/JMnedict; JLPT level annotations by Bluskyo/JMDict_Extended contributors. License confirmed by project owner 2026-06-22. | 2026-06 | EDRDG derivative — verify at source Share-alike | JLPT bucket estimation fallback |
| muzukashii | 0.1.0 | MIT | Kanji difficulty analysis |
Libraries
| Component | Version | License | Usage in JP Shadow |
|---|---|---|---|
| kuromoji.js | — | Apache-2.0 | — |
| jmdict-simplified Derived from JMdict (see above) | — | CC BY-SA (EDRDG terms) Share-alike | — |