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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 express the degree of a predicate

Let's say I have this triple: m:song1 m:hasFeature m:harmony that means a song with uri m:song1 has harmony, okay cool so far, but sometimes I want to say that it has harmony just 40% . A better example may be this: m:user1 m:fromPeriod…
Ania David
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How to get an uri from a rdf file when inserting data with jena query?

I'm using jena to execute a sparql query for inserting data in a rdf file: String queryString = "PREFIX kb: \n" + "PREFIX rdf: \n" + "INSERT…
user1281678
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Get administration information

I have checked the ontology of GeoSPARQL and I have found this: an administrative division of a country, undifferentiated as to administrative…
gsamaras
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How do we make RDF schema compatible with OWL?

I have been trying to research making rdf schema compatible with web ontology language but I am still new and still getting mixed up. any help with this is highly appreciated. I need to know if there is anything I should remove or omit from rdfs to…
HamsterRoll
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Drafting ontology from API example and documention

While making good ontology is for sure big and mostly manual effort, it could be interesting to know if there are any techniques / tools, which automate making vendor-specific, intermediate ontologies for ETL process, given, say, rich-enough JSON…
Roman Susi
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Why Jena is not returning declared RDFS properties?

I use Jena's OntClass.listDeclaredProperies() functions. Even every class is supposed to have all RDFS properties (e.g. rdfs:comment), listDeclaredProperies never returns any of them. How they are associated with a class and how to get them? Update…
user3024710
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Can you specify a closed set in owl without enumerating all its individuals?

I would like to know if it is possible to specify a class is a closed set without enumerating all of its individuals. For eg. given a class of Drivers with individuals A, B and C is there an axiom I can put on Driver that will cause a reasoner to…
Kunal Khaladkar
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How to Satisfy SPARQL query constraints found within Graph Pattern

I am dealing with the streaming data and for that I need to apply some SPARQL type queries. For example, If I have a query like: Select ?x,?z FROM Where { ?x p1 ?y -----(t1) ?x p2 ?z -----(t2) ?z p3 o3 -----(t3) …
Haroon Lone
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Sparql query syntax error on Virtuoso while querying Linked Geo Data Endpoint

I'm trying to query some basic SPARQL on Linked Geo Data's Endpoint http://linkedgeodata.org/sparql Running a normal Select * i get a few triples like these But when i run #Prefix lgdr: #Prefix…
Deepak Nair
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Using explicit RDF Property

I'm not sure how to interpret the semantics of the following RDF triples. Am I interpreting them correctly? Example A Subject - Predicate - Object Tom - age - 24 I could read this as the predicate age has the value 24. This seems…
Michael Anslow
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comparing two OWLs to determine similarity

I have two OWL files each file describes what a receipt is, OWL-A has class named RecBody with property hasItem. OWL-B has the same class but has a property called hasField. both are identical My question is how specify to the RDF engine that…
sisck vabrigas
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Get values from a subClass in a sparql query

Im have a problem trying to do a sparql query using subClasses. I have the following ontology: where Quesos is a SubClassOf Ingrediente as you can see in the next image and Quesos have some other members too. I want to have some recipes back from…
SomeAnonymousPerson
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How to install SILK workbench?

I want to install Silk - The Linked Data Integration Framework. I have downloaded latest version (2.6.1) of SILK WorkBench (https://github.com/silk-framework/silk/releases). I want to install it in both Mac and Windows Machine. Project README file…
Beautiful Mind
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multiple users accessing RDF file for read and write

I am using an RDF file to store links (URLs) of online resources that are added by different users about various topics. I am using Jena API to read and write the RDF file, on Apache server. My concern is that multiple users would allowed at the…
SotonJ
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Extract schema from rdf/xml

I am making use of a tool called as FRED (http://wit.istc.cnr.it/stlab-tools/fred) , which generates the RDF/XML for the given natural language text. But that tool is making use its own predefined schema and also the namespaces. There is no way for…
Sujay Subrahmanya
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