Enhancement Engines and their main features

This provides an overview about all Enhancement Engine implementations managed by the Apache Stanbol community.

Preprocessing

Language Identification Engine
- language detection for textual content utilizing Apache Tika
Tika Engine (based on Apache Tika)
- content type detection
- text extraction from various document formats
- extraction of metadata from document formats
Metaxa Engine
- text extraction from various document formats
- extraction of metadata from document formats

Named Entity Extraction Enhancement Engine
- NLP processing using OpenNLP NER
- detects occurrences of persons, places and organizations only
KeywordLinkingEngine
- NLP processing using OpenNLP
- supports multiple languages
- detects occurrences of untyped entities as concepts, takes local taxonomies as linking target

Named Entity Tagging Engine
- suggest links to several Linked Data Sources (e.g. DBpedia)
Geonames Enhancement Engine
- suggests links to geonames.org
- provides hierarchical links for locations
OpenCalais Enhancement Engine
- integrates service from Open Calais. (Note: You need to provide a key in order to use this engine)
Zemanta Enhancement Engine
- integrates the Zemanta services. (Note: You need to provide a key in order to use this engine)

CachingDereferencerEngine (deprecated, see dereferencing support of individual engines as well as STANBOL-336)
- retrieves additional content for presenting the enhancement results.
Refactor Engine
- transforms enhancements according to a target ontology, requires KRES launcher.