Jet (Java Extraction Toolkit)

About JET

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 Extraction] specifications.

JET is a work in progress, and continues being regularly expanded and updated.


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 . 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.

Downloading Jet

Jet distribution tar
(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.

Installing Jet

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

In addition, the directory will contain the following files and directories for those who wish to recompile or modify Jet

To use Jet,
The documentation for the current release (also included in the download) is here.