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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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Difference between domain and range in rdf schema?

could you please explain me the difference between rdfs:domain and rdfs:range with an example? and when should i use domain and when range? i have read h w3c rdf primer but i did not understand the difference
Baper
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How are RDF and RDFS related?

I've been reading about Semantic Web technologies such as RDF/RDFS and "ontology", but was wondering how each of these are related? At the moment the terms all seem interchangeable, or I'm not understanding a fundamental concept here.
Webster Thesaurus
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What is the difference between OWL and UML in the Software Engineering Process

Currently i am trying to figure out, then to use OWL and then to use UML to describe a domain of interest in a Software Engineering process. I read this paper by Atkinson, which gives a very good overview about the difference and the equalities of…
rzo1
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How to query Classes with Object Property in Sparql

Does any one know how to query Classes with Object Property in Sparql? Assume we have an OWL file which contains follows Human ----(hasPizza)---> Pizzas Human and Pizzas are classes (or concepts). In SPARQL, this query returns nothing: select ?x ?y…
user2334508
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owl:allValuesFrom and rdfs:range difference

I'm working on semantic webs and I'm wondering: is there any difference in a semanitc of writing a restriction like: :Person a owl:Class ; rdfs:subClassOf [ a owl:Restriction ; owl:onProperty :hasParent ; owl:allValuesFrom…
krajol
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How to query Wikidata for "also known as"

I would like to know how to query Wikidata by using the alias ("also known as"). Right now I am trying SELECT ?item WHERE { ?item rdfs:aliases ?alias. FILTER(CONTAINS(?alias, "Angela Kasner"@en)) } LIMIT 5 This is simply a query that works if I…
Junge
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OWL Class and Subclass Property Inheritance

I have a confusion about OWL class and subclass property inheritance. Some posts are saying there is no inheritance in OWL (OWL: How to get inheritance of property relations between two classes from those of superclasses?,…
Beautiful Mind
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What is the owl:Nothing class designed to do?

If you look at the OWL ontology definition, you'll see a bunch of class definitions. One of them is the following: owl:Nothing a owl:Class ; rdfs:label "Nothing" ; rdfs:comment "This is the empty class." ; rdfs:isDefinedBy…
Kristian
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RDF Graph Entailment

I just read about the concept of entailment for RDF (Resource Description Framework).Can anyone tell me an example of entailment for two RDF graphs and explain them a bit. Thanks
Anum Lodhi
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Using the 'GRAPH' keyword in SPARQL to fetch remote graphs

I'm looking to use SPARQL for a relatively basic task: Given a FOAF graph, I'd like to parse the elements I find in there, get their tags (if they exist) and then, use those as new graphs from which to find information about those people. So for…
Geoffroy
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Instances vs Classes in RDFS

The description of the base classes defined by RDFS in the W3C reference document states that some classes are instances of one class and a subclass of another (or in some cases an instance and subclass of the same class). Coming from a more…
TooWarmInFebruary
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Convert XSD to RDF Schema

Is there a tool for generate RDFS from an XSD?
mimrock
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How to define the type of elements in an rdf:Seq?

I want to create a property defining a rdf:Seq as a rdfs:range of an object : eg:myProperty a rdf:Property; rdfs:range rdf:Seq; . I'm looking for a way to define the type of the elements stored in the rdf:Seq. For example, I don't want this…
Thibaut Guirimand
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How does schema.org usage fit into Linked Data principles?

I am starting to learn schema.org schema. I come from the RDF/OWL community. To my surprise I could not indeed find an RDFS or OWL vocabulary representation of schema.org. More specifically, I realised that it was just a HTML page describing the…
MaatDeamon
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restrict xsd:string to [A-Z] for rdfs:range

How can I specify the range of a datatype property to be xsd:strings whose literal forms match [A-Z]? OWL restrictions don't do the trick for me, at least at first glance. Is there a way to do this with regular expressions and if so, where?
chile
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