Hi folks, I'm working on support for Nepomuk search in Akregator2. I have not found any suitable ontology for indexing RSS articles, so I made an attempt to write one myself.
I have no previous experience with writing ontologies, so I would appreciate if you could take a look and review the ontology: @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix nao: <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#> . @prefix nco: <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#> . @prefix nrl: <http://www.semanticdesktop.org/ontologies/2007/08/15/nrl#> . @prefix nie: <http://www.semanticdesktop.org/ontologies/2007/01/19/nie#> . @prefix nmo: <http://www.semanticdesktop.org/ontologies/2007/01/19/nmo#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix dc: <http://purl.org/dc/elements/1.1/> . @prefix nso: <http://www.kde.org/ontologies/nso#> . nso: { nso:Element a rdfs:Class ; rdfs:label "Feed Element" ; rdfs:comment "Superclass for all elements related to RSS feeds" ; rdfs:subClassOf nie:InformationElement . nso:Feed a rdfs:Class ; rdfs:comment "Represents an RSS Feed" ; rdfs:label "RSS Feed" ; rdfs:subClassOf nso:Element . nso:Article a rdfs:Class ; rdfs:label "RSS Article" ; rdfs:comment "Represents a single article within an RSS Feed" ; rdfs:subClassOf nso:Element . nso:Enclosure a rdfs:Class ; rdfs:label "RSS Enclosure" ; rdfs:subClassOf nso:Element . # Properties of nso:Element nso:sourceUrl a rdf:Property ; rdfs:label "Source URL" ; rdfs:comment "URL of the source" ; rdfs:subPropertyOf dc:source ; rdfs:range xsd:string ; rdfs:domain nso:Element . nso:title a rdf:Property ; rdfs:label "Title" ; rdfs:comment "Title of the element" ; rdfs:subPropertyOf nie:title ; rdfs:range xsd:string ; rdfs:domain nso:Element . # Properties of nso:Feed nso:publisher a rdf:Property ; rdfs:label "Publisher" ; rdfs:comment "Publisher of the feed" ; rdfs:range nco:Contact ; rdfs:domain nso:Feed . # Properties of nso:Article nso:content a rdf:Property ; rdfs:label "Content" ; rdfs:comment "Content of the article" ; rdfs:subPropertyOf nie:htmlContent ; rdfs:range xsd:stirng ; rdfs:domain nso:Article . nso:description a rdf:Property ; rdfs:label "Description" ; rdfs:comment "Description of article content" ; rdfs:subPropertyOf nie:description ; rdfs:range xsd:string ; rdfs:domain nso:Article . nso:publishTime a rdf:Property ; rdfs:label "Publish Time" ; rdfs:comment "Date when the article was first published in the feed" ; rdfs:subPropertyOf dc:date ; rdfs:range xsd:dateTime ; rdfs:domain nso:Article . nso:updateTime a rdf:Property ; rdfs:label "Update Time" ; rdfs:comment "Date when the article was last updated in the feed" ; rdfs:subPropertyOf dc:date ; rdfs:range xsd:dateTime ; rdfs:domain nso:Article . nso:author a rdf:Property ; rdfs:label "Author" ; rdfs:comment "Author of the article" ; rdfs:range nco:Contact ; rdfs:domain nso:Article . nso:enclosure a rdf:Property ; rdfs:label "Enclosure" ; rdfs:comment "Enclosure related to the article" ; rdfs:range nso:Enclosure ; rdfs:domain nso:Article . nso:isRead a rdf:Property ; nrl:maxCardinality 1 ; rdfs:label "Is Read" ; rdfs:comment "A flag that state whether the item has been read" ; rdfs:range xsd:boolean ; rdfs:domain nso:Article . # Properties of nso:Enclosure nso:type a rdf:Property ; nrl:maxCardinality "1" ; rdfs:label "Enclosure type" ; rdfs:comment "Describes type of the enclosure" ; rdfs:range xsd:string ; rdfs:domain nso:Enclosure . nso:length a rdf:Property ; nrl:maxCardinality "1" ; rdfs:label "Length" ; rdfs:comment "Length of audio enclosure (podcast)" ; rdfs:range xsd:integer ; rdfs:domain nso:Enclosure . } <http://www.kde.org/ontologies/nso_metadata#> { <http://www.kde.org/ontologies/nso_metadata#> a nrl:GraphMetadata ; nrl:coreGraphMetadataFor nso: . nso: a nrl:Ontology ; nao:hasDefaultNamespace "http://www.kde.org/ontologies/nso#"; ; nao:hasDefaultNamespaceAbbreviation "nso" ; nao:lastModified "2013-01-20T22:57:45.656Z" ; nao:serializationLanguage "TriG" ; nao:status "Unstable" ; nao:updatable "0 " ; nao:version "2" ; nao:prefLabel "Nepomuk Syndication Ontology" ; nao:description "The Nepomuk Syndication Ontology extends the Nepomuk Information Element framework into the domain of Web Syndication" . } Thanks Dan -- [email protected] | Associate Software Engineer / BaseOS / KDE, Qt GPG Key: 0xC59D614F6F4AE348 Fingerprint: 4EC1 86E3 C54E 0B39 5FDD B5FB C59D 614F 6F4A E348
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