What is meant by RDF?
RDF is a standard for data interchange that is used for representing highly interconnected data. RDF stands for Resource Description Framework and is a standard for describing web resources and data interchange, developed and standardized with the World Wide Web Consortium (W3C).
What is RDF schema in ontology development?
RDF Schema (Resource Description Framework 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 data model, providing basic elements for the description of ontologies.
What are the fundamental concepts of RDF?
The core structure of the abstract syntax is a set of triples, each consisting of a subject, a predicate and an object. A set of such triples is called an RDF graph. An RDF graph can be visualized as a node and directed-arc diagram, in which each triple is represented as a node-arc-node link.
What is RDF used for discuss RDF elements?
RDF is used to describe information resources. The Dublin Core is a set of predefined properties for describing documents.
What is the difference between OWL and RDF?
The semantic web makes use of RDF and OWL which occur in two layers. RDF is a special framework found online that is tasked with the representation of online exchange of data. OWL, on the contrary, is a special language used in the description of ontologies online.
What is reification in RDF?
RDF Reification “Reify” means to take an abstract idea, and to make it concrete. In the world of RDF, it means to write RDF statements about RDF statements. For instance, you might have a triple: I like RDF.
Is an example of RDF?
This is a few lines of an RDF document: The xmlns:rdf namespace, specifies that elements with the rdf prefix are from the namespace “http://www.w3.org/1999/02/22-rdf-syntax-ns#”. The xmlns:cd namespace, specifies that elements with the cd prefix are from the namespace “http://www.recshop.fake/cd#”.
What are the components of RDF?
An RDF triple contains three components:
- the subject , which is an RDF URI reference or a blank node.
- the predicate , which is an RDF URI reference.
- the object , which is an RDF URI reference, a literal or a blank node.
How RDF is used to describe resources?
RDF schema is a standard means to describe the properties of resources defined using RDF. For example, if a resource is of a particular type, has a certain relationship to another resource, or has some specified attribute, RDF uses URIs to uniquely identify these descriptive concepts.
What is RDF syntax?
RDF/XML provides an abbreviation for the corresponding syntax when a node element about a resource has multiple property elements. This can be abbreviated by using multiple child property elements inside the node element describing the subject node.