romanization of Japanese
Let an agent explain the romanization of Japanese and its systems, relay rules and official usage from standards and government sources, describe input-method romaji, and help distinguish and convert between systems.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain the romanization of Japanese and its systems, relay rules and official usage from standards and government sources, describe input-method romaji, and help distinguish and convert between systems.
The representation of Japanese in the Latin alphabet, using systems such as Hepburn romanization, which follows English-like consonant spellings and is most common internationally, Kunrei-shiki, the ISO 3602 standard taught in Japanese schools, and the older Nihon-shiki, together with wapuro romaji used for typing Japanese on keyboards and specialised transcriptions such as those adapted for Esperanto; romanization is used in signage, passports, dictionaries and language learning, and choices between systems remain debated.
What it is for: Writing Japanese in the Latin alphabet.
It can be explain the systems; relay rules and official usage; describe input romaji; help convert between systems.
Distinguishing features
Multiple competing systems
Hepburn dominance abroad
Kunrei-shiki in education
Keyboard input use
What it looks like
Not a visible object; Japanese words in Latin letters.
Physical character
Hepburn system: 1867 year - first edition of Hepburn dictionary
Kunrei-shiki cabinet order: 1954 year
ISO 3602: 1989 year
How it is recognised
Latin-alphabet writing of Japanese
Hepburn, Kunrei-shiki, Nihon-shiki, wapuro romaji, Esperanto-adapted transcription
Kana and kanji are the native scripts; transliteration into Cyrillic is a separate system
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is standardised in - as Kunrei-shiki
is most used as - internationally
In practice
Families and kinds
Hepburn romanization and its variants
Kunrei-shiki and ISO 3602
Nihon-shiki
wapuro romaji for input methods
passport and road sign conventions
specialised transcriptions such as for Esperanto
historical Portuguese and Dutch systems
Identifiers
ISO 3602 Kunrei-shiki
ISO 3602 Strict Nihon-shiki
Standards and regulation
ISO 3602
Japanese cabinet orders on romanization, including the 2024 move toward Hepburn
Passport and road sign romanization rules
ALA-LC romanization for libraries
Failure modes and hazards
Mixing systems inconsistently
Losing long vowel distinctions
Stale information on official policy
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What romanization of Japanese is.
Definition.
Definition
Definition and systems.
Definition
Definition.
- What is romanization of Japanese, and how do Hepburn, Kunrei-shiki and Nihon-shiki differ? definition
- Is the question about romanization, the native scripts or another transliteration? boundary
Rules
Rules and details.
Rules
Rules.
- How are long vowels, syllabic n, double consonants and particles written in each system? definition
- Which entry fits the specific system? action
Use Use in practice.
Practice.
Official
Official usage.
Official
Official.
- Which systems do schools, passports, road signs and libraries use, from official sources? provenance
- Which references are standard? provenance
Input
Keyboard input.
Input
Input.
- How does wapuro romaji work for typing Japanese, and how does it differ from formal systems? provenance
- Which entry fits Japanese input method? action
Convert Conversion and tools.
Practice.
Conversion
Converting between systems.
Conversion
Conversion.
- How can text be converted between Hepburn and Kunrei-shiki, and what pitfalls arise? action
- Which sources are cited? provenance
Special
Specialised transcriptions.
Special
Special.
- What specialised transcriptions exist, such as for Esperanto or linguistics? provenance
- Which entry fits the specific transcription? action
Context History and debates.
Attribution.
History
History.
History
History.
- How did romanization develop from Portuguese missionaries through Hepburn to cabinet orders and the 2024 policy shift? provenance
- Which entry fits the history of Japanese writing? action
Debates
Debates.
Debates
Debates.
- What debates surround the choice of system, with positions attributed? provenance
- Is the presentation neutral? boundary
What the second pass must settle
- Should Hepburn and Kunrei-shiki be separate primary entries?
- How should standards and government sources be linked?
- The registry entry has merged aliases naming input romaji and an Esperanto transcription; should they be split off?