[Nepomuk] RSS Ontology
Daniel Vrátil
dvratil at redhat.com
Fri Jan 25 15:15:14 UTC 2013
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
> > Nepomuk at kde.org
> > https://mail.kde.org/mailman/listinfo/nepomuk
>
> _______________________________________________
> Nepomuk mailing list
> Nepomuk at kde.org
> https://mail.kde.org/mailman/listinfo/nepomuk
--
dvratil at redhat.com | Associate Software Engineer / BaseOS / KDE, Qt
GPG Key: 0xC59D614F6F4AE348
Fingerprint: 4EC1 86E3 C54E 0B39 5FDD B5FB C59D 614F 6F4A E348
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: This is a digitally signed message part.
URL: <http://mail.kde.org/pipermail/nepomuk/attachments/20130125/bac542bd/attachment.sig>
More information about the Nepomuk
mailing list