Difference between revisions of "Thesaurus"

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{{Warning|This section is still unders contruction}}
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{{TOCright}} __TOC__
  
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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.  
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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.  
  
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{{Warning|Thesaurus is only available starting from OpenKM 5.0.}}
  
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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
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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.
  
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{{Note|OpenKM can work with thesaurus defined in '''.owl''' and '''.rdfs''' formats.}}
  
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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, [http://aims.fao.org/website/AGROVOC-Thesaurus/sub Agrovoc] ( FAO ), [http://www.sti.nasa.gov/thesfrm1.htm NASA Thesaurus], [http://www2.ulcc.ac.uk/unesco/ UNESCO Thesaurus], [http://redined.r020.com.ar/es/index.php?tema=55 Public administration Thesaurus] among others. Some of them are free and some have usage restrictions.
  
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OpenKM can working with thesaurus defined in '''.owl''' and '''.rdfs''' formats.
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In order to correctly configure OpenKM to use a thesaurus the following configuration properties must be set:
  
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<source lang="java">
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kea.thesaurus.owl.file
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kea.thesaurus.base.url
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kea.thesaurus.tree.root
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kea.thesaurus.tree.childs
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</source>
  
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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 )
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'''Set OWL file'''
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<source lang="java">
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kea.thesaurus.owl.file=vocabulary/file.owl
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</source>
  
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'''Set base url'''
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<source lang="java">
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kea.thesaurus.base.url=http://www.someweb.org
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</source>
  
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To correctly OpenKM thesaurus installation you need to knowing ...
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'''Query to get root node'''
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SKOS Simple Knowledge Organization System
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<source lang="java">
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kea.thesaurus.tree.root=SELECT DISTINCT UID, TEXT FROM {UID} Y {OBJECT}, {UID} rdfs:label {TEXT} ; [rdfs:subClassOf {CLAZZ}] where not bound(CLAZZ)
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and lang(TEXT)="en" USING NAMESPACE foaf=<http://xmlns.com/foaf/0.1/>, dcterms=<http://purl.org/dc/terms/>,
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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#>,
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skos=<http://www.w3.org/2004/02/skos/core#>, dc=<http://purl.org/dc/elements/1.1/>
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</source>
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'''Query to get childs node'''
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<source lang="java">
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kea.thesaurus.tree.childs=SELECT DISTINCT UID, TEXT FROM {UID} rdfs:subClassOf {CLAZZ}, {UID} rdfs:label {TEXT} where xsd:string(CLAZZ) =
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"RDFparentID" and lang(TEXT)="en" USING NAMESPACE foaf=<http://xmlns.com/foaf/0.1/>, dcterms=<http://purl.org/dc/terms/>,
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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#>,
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skos=<http://www.w3.org/2004/02/skos/core#>, dc=<http://purl.org/dc/elements/1.1/>
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</source>
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You could be interested in:
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* [http://thesauri.cs.vu.nl/ A Method for Converting Thesauri to RDF/OWL]
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* [http://owl.cs.manchester.ac.uk/owltoskos/ OWL to SKOS online conversor]
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* [http://www.ebusiness-unibw.org/tools/skos2owl/ SKOS to OWL online conversor]
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* [http://www.w3.org/2004/02/skos/ SKOS Simple Knowledge Organization System]
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Also check [[Thesaurus full example]] [[File:Padlock.gif]] for a step-by-step guide.
  
 
[[Category: Installation Guide]]
 
[[Category: Installation Guide]]

Latest revision as of 13:07, 12 February 2014

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


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

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: 

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.

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