Jet (Java Extraction Toolkit)
JET, the Java Extraction Tool, provides a variety of components
for language analysis, such as sentence segmentation, name
tagging, time expression tagging and normalization, part-of-speech
tagging, partial parsing, and coreference analysis. These
components can be arranged in pipelines for different
applications, and can be used either for interactive analysis of
individual sentences, or 'batch' analysis of complete documents.
Simple tools are provided for annotating documents and displaying
annotated documents. A full set of procedures are also
provided for performing information extraction of entities,
relations, and events following the ACE [Automatic Content
JET is a work in progress, and continues being regularly expanded
Jet Copyright ©1999-2012 Ralph Grishman
Licensed under the Apache License, Version 2.0 (the "License"); you
may not use this file except in compliance with the License. You may
obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
. Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an "AS IS"
BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
or implied. See the License for the specific language governing
permissions and limitations under the License.
(select to download)
|8 Nov 2012
[An earlier version of Jet is available here.]
If you find Jet useful for your work or incorporate any part of
it into software you distribute, we earnestly request that you
notify Prof. Ralph Grishman.
You need Java 1.5 or later in order to run Jet. It runs under
linux and Apple Mac OS X through terminal windows.
Download the latest Jet distribution tar file and extract all the
files with tar -xzvf.
The expanded directory will include
- jet-all.jar, the Jet 'executable' (including all libraries)
- bin, a directory with simple scripts for invoking Jet
- docs, a directory of user documentation files
- props, a directory of configuration files
- data, a directory of data files used by Jet
- acedata, a directory of additional data files used by Jet
for Ace information extraction
- example, a directory of files giving an example for
running Jet for Ace information extraction
- runAceExample, a script to run this example
- NOTICE, a copyright / license notice
In addition, the directory will contain the following files and
directories for those who wish to recompile or modify Jet
To use Jet,
- src, a directory with the Jet source files
- test, a directory with source files of Jet unit tests
- parser-stub-src, stub sources for a statistical
- lib, a directory containing other jar files required
- build.xml, scripts for building Jet using ant
The documentation for the current release (also included in the
download) is here.
- add the bin directory to your path
- set the environment variable JET_HOME to point to
the top directory into which the Jet files have been unpacked