macOS
Homebrewverified · 100%
brew install cmuclmtklocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install cmuclmtkMacPorts ports tree · audio/cmuclmtk/Portfile · source: api.github.com
brew
Install cmuclmtk with Homebrew, MacPorts, zypper
Language model tools (from CMU Sphinx). Version 0.7 via Homebrew; verified 2026-06-19.
install
Additional install commands
Linux
openSUSE zypperverified · 92%
sudo zypper install cmuclmtkopenSUSE Tumbleweed package metadata · cmuclmtk · source: download.opensuse.org
overview
Package summary
Language model tools (from CMU Sphinx)
Project links
Commands and aliases
- evallm
- idngram2lm
- idngram2stats
- lm_combine
- lm_interpolate
- mergeidngram
- ngram2mgram
- text2idngram
- text2wfreq
- text2wngram
- wfreq2vocab
- wngram2idngram
history
Project history and usage
CMUCLMTK is the CMU-Cambridge statistical language modeling toolkit as carried in the CMUSphinx tree: a set of Unix-style tools for building word-frequency lists, vocabularies, n-gram counts, and backoff bigram/trigram language models for speech-recognition workflows.
Project history
Roni Rosenfeld released version 1 of the CMU Statistical Language Modeling Toolkit in 1994, and Philip Clarkson and Rosenfeld published the CMU-Cambridge toolkit paper in 1997 describing version 2. CMUSphinx later kept the toolkit in its Subversion tree, with CMUSphinx documentation noting that no official toolkit release had appeared since the Cambridge release and that a planned CMUSphinx release would effectively be version 2.1.
Adoption history
The 1997 paper reported use in more than 40 academic, government, and industrial laboratories in more than 12 countries. In package-manager culture it survives as a niche speech/NLP utility: this batch input records Homebrew, MacPorts, and openSUSE/zypper package names.
How it is used
Typical use is a pipeline of small commands such as text2wfreq, wfreq2vocab, text2idngram, idngram2lm, evallm, lm_combine, and lm_interpolate to turn text corpora into n-gram language models and evaluate or combine them.
Why package nerds care
Package nerds care because it is a fossilized but useful research-toolchain package: old speech-recognition infrastructure, many tiny command-line filters, and CMUSphinx lineage preserved in modern package managers long after the research ecosystem moved toward newer language-modeling tools.
Timeline
- 1994: Version 1 of the CMU SLM Toolkit was released.
- 1997: Clarkson and Rosenfeld published the CMU-Cambridge toolkit paper for version 2.
- CMUSphinx era: The toolkit was maintained under the CMUSphinx Subversion tree with planned version 2.1 work.
Related projects
- CMUSphinx and PocketSphinx are the speech-recognition projects around which this toolkit is distributed.
- SRILM is a later, widely cited language-modeling toolkit in the same n-gram research-tooling family.
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 post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 13 platform targets.
- Build metadata lists 1 build dependencies.
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 |
|---|---|---|---|
evallm | cli | global executable | |
idngram2lm | cli | global executable | |
idngram2stats | cli | global executable | |
lm_combine | cli | global executable | |
lm_interpolate | cli | global executable | |
mergeidngram | cli | global executable | |
ngram2mgram | cli | global executable | |
text2idngram | cli | global executable | |
text2wfreq | cli | global executable | |
text2wngram | cli | global executable | |
wfreq2vocab | cli | global executable | |
wngram2idngram | cli | global executable |
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 generated2026-07-08
manager version0.7
manager updated2026-06-19
local dataok
upstreamnot checked
latest detectednot detected
https://cmusphinx.sourceforge.net/
- infoRelease/tag comparison is only available for GitHub repositories.https://cmusphinx.sourceforge.net/none confidence
install metadata
Package metadata
| Package key | brew:cmuclmtk |
|---|---|
| Version | 0.7 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/cmuclmtk |
| Homepage | https://cmusphinx.sourceforge.net/ |
| Repository | https://svn.code.sf.net/p/cmusphinx/code/trunk/cmuclmtk |
| Upstream docs | https://cmusphinx.github.io/wiki/cmuclmtkdevelopment |
| License | BSD-2-Clause |
| Source archive | https://downloads.sourceforge.net/project/cmusphinx/cmuclmtk/0.7/cmuclmtk-0.7.tar.gz |
| Last updated | 2026-06-19T12:30:04-07:00 |
| Pulse | updated |
| Build dependencies | pkgconf |
| Bottle | available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | cmuclmtk |
| Version Scheme | 0 |
| Revision | 0 |
| Conflicts With |
|
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
zypper95%
cmuclmtk 0.7-12.5
CMU-Cambridge Statistical Language Modeling toolkit
http://cmusphinx.sourceforge.net
sudo zypper install cmuclmtk- License: AFL-2.1 and BSD-3-Clause
- Category: System/Libraries
- Architecture: x86_64
- Source Package: cmuclmtk
- 3 dependencies
- 1 provides
- normalized package name match
- Matched by: Cmuclmtk
zypper95%
libcmuclmtk-devel 0.7-12.5
CMU-Cambridge Statistical Language Modeling toolkit
http://cmusphinx.sourceforge.net
sudo zypper install libcmuclmtk-devel- License: AFL-2.1 and BSD-3-Clause
- Category: Development/Libraries/C and C++
- Architecture: x86_64
- Source Package: cmuclmtk
- 2 dependencies
- 1 provides
- normalized package name match
- Matched by: Cmuclmtk
zypper95%
libcmuclmtk0 0.7-12.5
CMU-Cambridge Statistical Language Modeling toolkit
http://cmusphinx.sourceforge.net
sudo zypper install libcmuclmtk0- License: AFL-2.1 and BSD-3-Clause
- Category: System/Libraries
- Architecture: x86_64
- Source Package: cmuclmtk
- 3 dependencies
- 2 provides
- normalized package name match
- Matched by: Cmuclmtk
MacPorts95%
cmuclmtk
sudo port install cmuclmtk- normalized package name match
- Matched by: Cmuclmtk
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
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment