Nutch has a ontology plugin based on Jena. http://wiki.apache.org/nutch/OntologyPlugin
I haven't used it. Just by looking at the source code, it seems it just a Owl parser. So apparently it only works with sources defined in OWL format, not others such as RDF. I think you need to extend the source code to create your own Query processor to include related terms defined in the ontology (with thesaurus being considered as a subset of ontology). If anyone has experience using the plug-in, I'd really appreciate any suggestions and comments. ND -----Original Message----- From: Borgman, Lennart [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2008 9:09 AM To: java-user@lucene.apache.org Subject: Using a thesaurus/onthology Is there any possibility to use a thesaurus or an onthology when indexing/searching with Lucene? --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]