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.
OpenKM can work with thesauri 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:
| 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) |
|
kea.thesaurus.tree.children |
Query to get child nodes. SELECT DISTINCT UID, TEXT FROM {UID} rdfs:subClassOf {CLAZZ}, {UID} rdfs:label {TEXT} where xsd:string(CLAZZ) = |
Take a look at a full configuration example at Creating your own thesaurus.
Some interesting URLs:
