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Questions tagged [rdfs]

RDF Schema is a set of classes using the RDF extensible knowledge representation language, providing basic elements for the description of ontologies, otherwise called RDF vocabularies, intended to structure RDF resources.

RDF Schema (variously abbreviated as RDFS, RDF(S), RDF-S or RDF/S) is a set of classes with certain properties using the RDF extensible knowledge representation language, providing basic elements for the description of ontologies, otherwise called RDF vocabularies, intended to structure RDF resources. These resources can be saved in a triplestore to reach them with the query language SPARQL.

Resources

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RDF Vocabulary and predicates

I am trying to convert some data to RDF format. I am able to create the basic ontologies using the dc and foaf types. The problem is that for more complex ontologies I need some more specific predicates. I am looking for some more specific…
user2079254
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How to Define My Own Ranges for OWL DataProperties

I have recently started learning Web Ontology Language (OWL). I want to define a DataProperty with my own defined range of value. Consider the following property:
Elton.fd
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Why rdf:Seq and not rdfs:Seq?

In the book Foundations of Semantic Web Technologies, when it switches to the explanation of RDFS and the reasons why RDF vocabulary had to be extended (for it to turn into an ontology language), features like containers and collections are…
Sara
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Are RDF and RDFS two separate documents?

When writing RDF and RDFS are you supposed to create a single document covering both? or create two separate documents? Similar to xml and xmls.
Chris
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RDFLib: How to create ontology in Python?

I am defining an ontology for Urban system using rdflib in Python. I defined the class urbanSystem and the subClass name. import rdflib from rdflib.graph import Graph, ConjunctiveGraph from rdflib import Graph, URIRef, BNode, Literal from rdflib…
emax
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How can I tell if a resource/entity is a class or instance

In RDF/RDFS/OWL, how can I tell if an entity is an purely an instance or also a class? I understand that class entities are also instances, since they are instances of the "class" entity and subclasses of other classes. However, I believe some…
LazerSharks
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How rdf:Bag, rdf:Seq and rdf:Alt is different while using them?

I'm reading the RDF Schema 1.1 recommendation, which includes the following (emphasis added): 5.1.2 rdf:Bag The rdf:Bag class is the class of RDF 'Bag' containers. It is a subclass of rdfs:Container. Whilst formally it is no different from an…
Pratik Shah
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Can I mix skos properties with rdfs properties to define a class?

To specify a rdfs:Class and organize an ontology, I want to use SKOS. Curently I define my classes using RDFS properties : :MyClass a rdfs:Class; rdfs:label "my label"; rdfs:comment "this is a comment"; . Can I define :MyClass as a…
Thibaut Guirimand
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&...; in RDF/XML — is this a standard RDF prefix expression?

I downloaded WordNet2.0 fullset. In the RDF/XML document, wnfull.rdfs, there are elements like this the following that use, e.g., &wn20schema;AdverbSynset as attribute values (in places where URIs would be expected). I know how #, url/ and value:…
isaac Lee
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If I have a annotation property has and each child (Y,Z) has property canDo, how can the Y inherit all the canDo?

I am working with Turtle and OWL. Say X is a class has a number of properties that it includes. How can I make the X have the same properties as all its children classes (Y and Z)? :has a owl:ObjectProperty :canDo a owl:ObjectProperty :X :has :Y :X…
someoneshopper
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How to validate a RDF with your RDF schema

I'm using the Jena framework to manipulate RDF files, but I can't find a way to validate a RDF with your respective RDFSchema. I'm trying this method bellow: Model mod1 = new ModelMem(); Model modSchema = new ModelMem(); String baseURI =…
awgustavo
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Present RDF with XSL. Updated

I wrote RDF file and was asked to present it using XSL. The RDF code (changed)
Michael Shaf
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What URI scheme should be used for a local concept in RDF?

Consider the case where you have some knowledge you want to name and you want to put it into a knowledge graph format like the resource description framework (RDF). However, you don't have an email, a web domain, or access to a namespace authority…
Sven Voigt
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Is rdfs:subClassOf really transitive?

I loaded this turtle file into two different OWL reasoners (HermiT and RDFox): @prefix : . @prefix owl: . @prefix rdf:…
justin2004
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When using rdfs:subClassOf or owl:equivalentClass in case of existential quantification (owl:SomeValuesFrom) for a OWL class restriction constructor?

We define a class A as owl:equivalentClass and a class A2 as rdfs:subClassOf based on the intersection (AND) of instances having a relation a_to_b and a_to_c with an instance of B or C respectively. Please see the example: :A rdf:type owl:Class ; …
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