The Apache OpenNLP team is pleased to announce the release of version 1.5.3 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 1.5.3 binary and source distributions are available for download from our download page: http://opennlp.apache.org/cgi-bin/download.cgi
The OpenNLP library is distributed by Maven Central as well. See the Maven Dependency page for more details: http://opennlp.apache.org/maven-dependency.html
This release contains a couple of new features, improvements and bug fixes. The CLI has been improved for a better consistency. Now the tools supports extensions that can be configured from the model, including customized context generators and validators.
Additionally the release contains the following noteworthy changes:
Porter Stemmer tool
L-BFGS parameter estimation
Fine-grained POSTagger evaluation report
Improved support to load user provided feature generator and context validation classes from OSGi environment
A detailed list of the issues related to this release can be found in the release notes.
For a complete list of fixed bugs and improvements please see the RELEASE_NOTES file included in the distribution.
--The Apache OpenNLP Team
16 April 2013