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Posted to announce@apache.org by Joern Kottmann <jo...@apache.org> on 2011/11/29 12:39:50 UTC

[ANNOUNCE] Apache OpenNLP 1.5.2 Incubating released

The Apache OpenNLP team is pleased to announce the release of version 
1.5.2-incubating of Apache OpenNLP.

The Apache OpenNLP library is a machine learning based toolkit for the 
processing of natural language text.
It supports the most common NLP tasks, such as tokenization, sentence 
segmentation, part-of-speech tagging,
named entity extraction, chunking, parsing, and coreference resolution.

The OpenNLP 1.5.2-incubating binary and source distributions are 
available for download from our download page:
http://incubator.apache.org/opennlp/download.cgi

The OpenNLP library is distributed by Maven Central as well. See the 
Maven Dependency page for more details:
http://incubator.apache.org/opennlp/maven-dependency.html

This release contains a couple of new features, improvements and bug 
fixes. The maxent trainer can now
run in multiple threads to utilize multi-core CPUs, configurable feature 
generation was added to the name
finder, the perceptron trainer was refactored and improved, machine 
learners can now be configured with
much more options via a parameter file, evaluators can print out 
detailed evaluation information.

Additionally the release contains the following noteworthy changes:

- Improved the white space handling in the Sentence Detector and its 
training code
- Added more cross validator command line tools
- Command line handling code has been refactored
- Fixed problems with the new build
- Now uses fast token class feature generation code by default
- Added support for BioNLP/NLPBA 2004 shared task data
- Removal of old and deprecated code
- Dictionary case sensitivity support is now done properly
- Support for OSGi

For a complete list of fixed bugs and improvements please see the 
RELEASE_NOTES
file included in the distribution.

--The Apache OpenNLP Team


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