macOS
Homebrewverified · 100%
brew install jumanpplocal Homebrew formula metadata
brew / rank 10757
Install jumanpp with Homebrew, Nix
Japanese Morphological Analyzer based on RNNLM. Version 1.02 via Homebrew; verified from local package data. Also installable with nix: nix profile install nixpkgs#jumanpp.
install
Additional install commands
Linux
Nixverified · 92%
nix profile install nixpkgs#jumanppnixpkgs package indexes · pkgs/by-name/ju/jumanpp/package.nix · source: api.github.com
overview
Package summary
Japanese Morphological Analyzer based on RNNLM
Project links
Commands and aliases
- jumanpp
- mkdarts_jumanpp
history
Project history and usage
Juman++ is a Japanese morphological analyzer from Kyoto University's NLP group. It was designed to consider semantic plausibility in word sequences with recurrent neural network language models, and version 2 rewrote the toolkit around a faster open C++ implementation.
Project history
Kyoto University's Juman++ page links the project as a Japanese morphological analyzer and cites the 2015 EMNLP paper on morphological analysis for unsegmented languages using recurrent neural network language models.
The GitHub README describes Juman++ as a new analyzer that uses an RNN language model, and states that version 2 improved accuracy and analysis speed by more than 250 times compared with the original Juman++.
The 2018 ACL Anthology system-demonstration paper describes the version 2 toolkit as a C++11/14 lattice-based morphological-analysis library with linear and recurrent neural net language models, plus tools for exposing model problems and partial annotation.
Adoption history
Juman++ gained adoption in Japanese NLP because it improved the accuracy and speed tradeoff of the JUMAN/Jumandic line while keeping a command-line analyzer usable in pipelines.
The Homebrew and Nix packages made the analyzer easy to install for developers outside Kyoto University's downloadable tarball workflow. The project also remained academically citeable through EMNLP 2015, ANLP 2018, EMNLP 2018, and a 2020 Journal of Natural Language Processing paper listed by the README.
How it is used
Users run `jumanpp` with UTF-8 Japanese text and receive one analyzed morpheme per line followed by `EOS`. The README documents options such as `--model`, `--beam`, `--specifics`, `--version`, and `--help`.
The package distribution includes a pretrained model, while the README warns that building directly from Git does not by itself provide a usable model for analysis.
Why package nerds care
Juman++ is notable to package maintainers because the source tree alone is not the product: usable packages need the analyzer and model assets. That tension is visible in the README's warning that release packages are much larger than source snapshots because they include a pretrained model.
It is also a bridge between classic Japanese morphological analyzers and neural NLP tooling: it keeps the Unix filter style while using neural language-model scoring under the hood.
Timeline
- 2015-09: The RNNLM-based Juman++ work appeared at EMNLP 2015.
- 2017-12-02: GitHub release v2.0.0-rc1 was published as the first preview.
- 2018-03-14: GitHub release v2.0.0-rc2 was published.
- 2018-11: The Juman++ toolkit paper appeared in the EMNLP 2018 system demonstrations.
- 2023-10-03: GitHub release v2.0.0-rc4 was published.
Related projects
- Juman++ is closely related to JUMAN, Jumandic, KNP, PyKNP, and the Kyoto University Text Corpus ecosystem.
- The README points to `jumanpp-jumandic` for training a Jumandic model and to tutorial code for building analyzers for other scriptio continua settings.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew bottle metadata was recorded.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
jumanpp | executable | indexed executable | Discovered from the local executable index. |
mkdarts_jumanpp | executable | indexed executable | Discovered from the local executable index. |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-08-03
manager version1.02
manager updated
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:jumanpp |
|---|---|
| Version | 1.02 |
| Package manager | Homebrew |
| Homepage | https://nlp.ist.i.kyoto-u.ac.jp/EN/index.php?JUMAN%2B%2B |
| Bottle | not recorded |
| Service | none declared |
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
jumanpp
nix profile install nixpkgs#jumanpp- normalized package name match
- Matched by: Jumanpp
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- pkg.so package database
- pkgdb category and tag curation