On Tuesday 22 of January 2013 17:38:33 Sebastian Trüg wrote: > Hi Daniel,
Hi, thanks for reviewing the ontology. > > some comments: > - I dont think you need special description and title properties. Just > use the ones in NIE > - Try reusing publisher and author from other ontos like NMM or the > publishing onto from Jörg I can make nso:publisher property a subproperty of nie:publisher. However I haven't found any "author" property in any other ontology that I could reuse. > - Can't you create sub-classes to nso:Enclosure instead of using nso:type? > > Also note that the semantic web uses atom[1] and sioc[2] for feeds. Do you think I should use one of these rather than writing my own? Dan > > Cheers, > Sebastian > > [1] http://bblfish.net/work/atom-owl/2006-06-06/AtomOwl.html > [2] http://sioc-project.org/ontology > > On 01/22/2013 04:10 PM, Daniel Vrátil wrote: > > 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 > > > > > > > > _______________________________________________ > > Nepomuk mailing list > > [email protected] > > https://mail.kde.org/mailman/listinfo/nepomuk > > _______________________________________________ > Nepomuk mailing list > [email protected] > https://mail.kde.org/mailman/listinfo/nepomuk -- [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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