The Apache OpenNLP team is pleased to announce the release of Apache OpenNLP 2.5.4.
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.
Apache OpenNLP 2.5.4 binary and source distributions are available for download from our download page.
The OpenNLP library is distributed by Maven Central as well. See the Maven Dependency page for more details: Maven Dependency
In total, this release tackles 28 issues and brings several dependency updates, bug fixes, additions and a modernization of the stemmer classes. The OpenNLP UIMA component has received many more unit tests (see: OPENNLP-385). Other (sandbox) components also received further unit tests, raising the corresponding test coverage.
For all changes, please see the full list found in Jira.
--The Apache OpenNLP Team
16 April 2025