This is an article on the KAON ontology infrastructure. For particle physics, see Kaon.

KAON (Karlsruhe ontology) is an ontology infrastructure developed by the University of Karlsruhe and the Research Center for Information Technologies in Karlsruhe. Its first incarnation was developed in 2002 and supported an enhanced version of RDF ontologies. Several tools like the graphical ontology editor OIModeler or the KAON Server were based on KAON.

There are ontology learning companion tools which take non-annotated natural language text as input: TextToOnto (KAON-based) and Text2Onto (KAON2-based). Information about Text2Onto exists on the web.

In 2005, the first version of KAON2 was released, offering fast reasoning support for OWL ontologies. KAON2 is not backward-compatible with KAON. KAON2 is developed in the School of Computer Science of the University of Manchester.

Text2Onto "is based on a probabilistic ontology model" (source).

KAON, TextToOnto, and Text2Onto are open source, based on Java. KAON2 is not open source (source), but the executable can be downloaded from the KAON2 site.

[edit] External links

[edit] KAON

• KAON download (SourceForge)
• TextToOnto download (SourceForge)
• KAON home page: ontology engineering suite consisting of various components (OI Modeler, KAON API, etc.) which support the KAON language and RDF/S

[edit] KAON2

• KAON2 home page: OWL-DL and DL-safe rules inference engine
• Text2Onto download
• GATE plugin documentation: using KAON2 from GATE.
• KAON2 at Ontoworld wiki

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