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Thesaurus configuration

A thesaurus is a book that lists words grouped together according to similarity of meaning (containing synonyms and sometimes antonyms), in contrast to a dictionary, which contains definitions and pronunciations.

In Information Science, Library Science, and Information Technology, specialized thesauri are designed for information retrieval. They are a type of controlled vocabulary, for indexing or tagging purposes. If you want more information about the term you can take a look at http://en.wikipedia.org/wiki/Thesaurus.  

There’s a great utility http://protege.stanford.edu/ for creating and maintaining your own thesaurus. Specific thesauri can be found on the Internet. For example, Agrovoc ( FAO ), NASA Thesaurus, UNESCO Thesaurus, Public administration Thesaurus among others. Some of them are free and some have usage restrictions.

In order to correctly configure OpenKM to use a thesaurus the following configuration properties must be set:

Property Description
kea.thesaurus.owl.file The ontology file ( Web ontology file )
vocabulary/file.owl
kea.thesaurus.base.url The base URL.
http://www.someweb.org
kea.thesaurus.tree.root Query to get the first node.
SELECT DISTINCT UID, TEXT FROM {UID} Y {OBJECT}, {UID} rdfs:label {TEXT} ; [rdfs:subClassOf {CLAZZ}] where not bound(CLAZZ)
 and lang(TEXT)=“en” USING NAMESPACE foaf=http://xmlns.com/foaf/0.1/, dcterms=http://purl.org/dc/terms/,
 rdf=http://www.w3.org/1999/02/22-rdf-syntax-ns#, owl=http://www.w3.org/2002/07/owl#, rdfs=http://www.w3.org/2000/01/rdf-schema#,
 skos=http://www.w3.org/2004/02/skos/core#, dc=http://purl.org/dc/elements/1.1/
kea.thesaurus.tree.children Query to get children node.
SELECT DISTINCT UID, TEXT FROM {UID} rdfs:subClassOf {CLAZZ}, {UID} rdfs:label {TEXT} where xsd:string(CLAZZ) =
 “RDFparentID” and lang(TEXT)=“en” USING NAMESPACE foaf=http://xmlns.com/foaf/0.1/, dcterms=http://purl.org/dc/terms/,
 rdf=<http://www.w3.org /1999/02/22-rdf-syntax-ns#>, owl=http://www.w3.org/2002/07/owl#, rdfs=http://www.w3.org/2000/01/rdf-schema#,
 skos=http://www.w3.org/2004/02/skos/core#, dc=http://purl.org/dc/elements/1.1/

Take a look a full configuration example at Creating your own thesaurus.

Some interesting URL: