Free or Open Source Software and Services
- General Architecture for Text Engineering "General Architecture for Text Engineering", which is bundled with a free Information Extraction system
- OpenCalais Automated information extraction web service from Thomson Reuters (Free limited version)
- Machine Learning for Language Toolkit (Mallet) is a Java-based package for a variety of natural language processing tasks, including information extraction.
- DBpedia Spotlight is an open source tool in Java/Scala (and free web service) that can be used for named entity recognition and name resolution.
- See also CRF implementations
Read more about this topic: Information Extraction
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