Difference between revisions of "Thesaurus"

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(Set OWL file)
(Query to get root node)
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  kea.thesaurus.base.url=http://www.someweb.org
 
  kea.thesaurus.base.url=http://www.someweb.org
  
== Query to get root node ==  
+
== Query to get root node ==
kea.thesaurus.tree.root=SELECT DISTINCT UID, TEXT FROM {UID} Y {OBJECT}, {UID} rdfs:label {TEXT} ; [rdfs:subClassOf {CLAZZ}] where not bound(CLAZZ)
+
<source lang="java">
 +
kea.thesaurus.tree.root=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/>,  
 
  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#>,
 
  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/>
 
  skos=<http://www.w3.org/2004/02/skos/core#>, dc=<http://purl.org/dc/elements/1.1/>
 +
</source>
  
 
== Query to get childs node ==  
 
== Query to get childs node ==  

Revision as of 16:30, 21 October 2010

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.


Nota advertencia.png Thesaurus is only available starting from OpenKM 5.0.

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 term you can take a look at http://en.wikipedia.org/wiki/Thesaurus.


Nota clasica.png OpenKM can working with thesaurus defined in .owl and .rdfs formats.

There's a great utility http://protege.stanford.edu/ to create and maintaining your own thesaurus. In Internet can be found specific thesaurus, for example Agrovoc ( FAO ), NASA Thesuarus, UNESCO Thesaurus, Public administration Thesaurus among others. Someones are free and others have some usage restrictions.

In order to configure correctly OpenKM thesaurus you must set this OpenKM.cfg entries:

kea.thesaurus.owl.file
kea.thesaurus.base.url
kea.thesaurus.tree.root
kea.thesaurus.tree.childs

Set OWL file

kea.thesaurus.owl.file=/vocabulary/file.owl

Set base url

kea.thesaurus.base.url=http://www.someweb.org

Query to get root node

kea.thesaurus.tree.root=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/>

Query to get childs node

kea.thesaurus.tree.childs=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/>

You could be interested in:

Also check Thesaurus full example Padlock.gif for a step-by-step guide.