Vocabulary of Interlinked Datasets (VoID) | DERI Vocabularies

Vocabulary of Interlinked Datasets (VoID)

Authors:

Richard Cyganiak (Digital Enterprise Research Institute, NUI Galway) (Email)

Jun Zhao (Department of Zoology, University of Oxford) (Email)

Keith Alexander (Talis) (Email)

Michael Hausenblas (LiDRC) (Email)

Last update:

06 March 2011

Namespace URI:

http://rdfs.org/ns/void#

Abstract

The Vocabulary of Interlinked Datasets (VoID) is an RDF Schema vocabulary for expressing metadata about RDF datasets. It is intended as a bridge between the publishers and users of RDF data, with applications ranging from data discovery to cataloging and archiving of datasets. This document provides a formal definition of the new RDF classes and properties introduced for VoID. It is a companion to the main specification document for VoID, Describing Linked Datasets with the VoID Vocabulary.

All terms at a glance

Classes: Dataset | DatasetDescription | Linkset | TechnicalFeature

Properties: class | classPartition | classes | dataDump | distinctObjects | distinctSubjects | documents | entities | exampleResource | feature | inDataset | linkPredicate | objectsTarget | openSearchDescription | properties | property | propertyPartition | rootResource | sparqlEndpoint | subjectsTarget | subset | target | triples | uriLookupEndpoint | uriRegexPattern | uriSpace | vocabulary

Overview diagram

Classes

Class: void:Dataset

dataset – A set of RDF triples that are published, maintained or aggregated by a single provider.

Class: void:DatasetDescription

dataset description – A web resource whose foaf:primaryTopic or foaf:topics include void:Datasets.

URI:: http://rdfs.org/ns/void#DatasetDescription
Superclass:: foaf:Document

Class: void:Linkset

linkset – A collection of RDF links between two void:Datasets.

URI:: http://rdfs.org/ns/void#Linkset
Properties include:: void:target, void:linkPredicate, void:subjectsTarget, void:objectsTarget
Superclass:: void:Dataset

Class: void:TechnicalFeature

technical feature – A technical feature of a void:Dataset, such as a supported RDF serialization format.

URI:: http://rdfs.org/ns/void#TechnicalFeature
Used with:: void:feature

Properties

Property: void:class

class – The rdfs:Class that is the rdf:type of all entities in a class-based partition.

URI:: http://rdfs.org/ns/void#class
Type:: owl:FunctionalProperty
Domain:: void:Dataset
Range:: rdfs:Class

Property: void:classPartition

class partition – A subset of a void:Dataset that contains only the entities of a certain rdfs:Class.

URI:: http://rdfs.org/ns/void#classPartition
Domain:: void:Dataset
Range:: void:Dataset
Superproperty:: void:subset

Property: void:classes

classes – The total number of distinct classes in a void:Dataset. In other words, the number of distinct resources occuring as objects of rdf:type triples in the dataset.

URI:: http://rdfs.org/ns/void#classes
Domain:: void:Dataset
Range:: xsd:integer

Property: void:dataDump

Data Dump – An RDF dump, partial or complete, of a void:Dataset.

URI:: http://rdfs.org/ns/void#dataDump
Domain:: void:Dataset
Range:: rdfs:Resource

Property: void:distinctObjects

distinct objects – The total number of distinct objects in a void:Dataset. In other words, the number of distinct resources that occur in the object position of triples in the dataset. Literals are included in this count.

URI:: http://rdfs.org/ns/void#distinctObjects
Domain:: void:Dataset
Range:: xsd:integer

Property: void:distinctSubjects

distinct subjects – The total number of distinct subjects in a void:Dataset. In other words, the number of distinct resources that occur in the subject position of triples in the dataset.

URI:: http://rdfs.org/ns/void#distinctSubjects
Domain:: void:Dataset
Range:: xsd:integer

Property: void:documents

number of documents – The total number of documents, for datasets that are published as a set of individual documents, such as RDF/XML documents or RDFa-annotated web pages. Non-RDF documents, such as web pages in HTML or images, are usually not included in this count. This property is intended for datasets where the total number of triples or entities is hard to determine. void:triples or void:entities should be preferred where practical.

URI:: http://rdfs.org/ns/void#documents
Domain:: void:Dataset
Range:: xsd:integer

Property: void:entities

number of entities – The total number of entities that are described in a void:Dataset.

URI:: http://rdfs.org/ns/void#entities
Domain:: void:Dataset
Range:: xsd:integer

Property: void:exampleResource

example resource of dataset

URI:: http://rdfs.org/ns/void#exampleResource
Domain:: void:Dataset
Range:: rdfs:Resource

Property: void:feature

feature

URI:: http://rdfs.org/ns/void#feature
Domain:: void:Dataset
Range:: void:TechnicalFeature

Property: void:inDataset

in dataset – Points to the void:Dataset that a document is a part of.

URI:: http://rdfs.org/ns/void#inDataset
Domain:: foaf:Document
Range:: void:Dataset
Superproperty:: dct:isPartOf

Property: void:linkPredicate

a link predicate

URI:: http://rdfs.org/ns/void#linkPredicate
Domain:: void:Linkset
Range:: rdf:Property

Property: void:objectsTarget

Objects Target – The dataset describing the objects of the triples contained in the Linkset.

URI:: http://rdfs.org/ns/void#objectsTarget
Type:: owl:FunctionalProperty
Domain:: void:Linkset
Range:: void:Dataset
Superproperty:: void:target

Property: void:openSearchDescription

open search description – An OpenSearch description document for a free-text search service over a void:Dataset.

URI:: http://rdfs.org/ns/void#openSearchDescription
Domain:: void:Dataset
Range:: foaf:Document

Property: void:properties

number of properties – The total number of distinct properties in a void:Dataset. In other words, the number of distinct resources that occur in the predicate position of triples in the dataset.

URI:: http://rdfs.org/ns/void#properties
Domain:: void:Dataset
Range:: xsd:integer

Property: void:property

property – The rdf:Property that is the predicate of all triples in a property-based partition.

URI:: http://rdfs.org/ns/void#property
Type:: owl:FunctionalProperty
Domain:: void:Dataset
Range:: rdf:Property

Property: void:propertyPartition

property partition – A subset of a void:Dataset that contains only the triples of a certain rdf:Property.

URI:: http://rdfs.org/ns/void#propertyPartition
Domain:: void:Dataset
Range:: void:Dataset
Superproperty:: void:subset

Property: void:rootResource

root resource – A top concept or entry point for a void:Dataset that is structured in a tree-like fashion. All resources in a dataset can be reached by following links from its root resources in a small number of steps.

URI:: http://rdfs.org/ns/void#rootResource
Domain:: void:Dataset

Property: void:sparqlEndpoint

has a SPARQL endpoint at

URI:: http://rdfs.org/ns/void#sparqlEndpoint
Domain:: void:Dataset

Property: void:subjectsTarget

Subjects Target – The dataset describing the subjects of triples contained in the Linkset.

URI:: http://rdfs.org/ns/void#subjectsTarget
Type:: owl:FunctionalProperty
Domain:: void:Linkset
Range:: void:Dataset
Superproperty:: void:target

Property: void:subset

has subset

URI:: http://rdfs.org/ns/void#subset
Domain:: void:Dataset
Range:: void:Dataset
Subproperties:: void:classPartition, void:propertyPartition

Property: void:target

Target – One of the two datasets linked by the Linkset.

URI:: http://rdfs.org/ns/void#target
Domain:: void:Linkset
Range:: void:Dataset
Subproperties:: void:subjectsTarget, void:objectsTarget

Property: void:triples

number of triples – The total number of triples contained in a void:Dataset.

URI:: http://rdfs.org/ns/void#triples
Domain:: void:Dataset
Range:: xsd:integer

Property: void:uriLookupEndpoint

has an URI look-up endpoint at – Defines a simple URI look-up protocol for accessing a dataset.

URI:: http://rdfs.org/ns/void#uriLookupEndpoint
Domain:: void:Dataset

Property: void:uriRegexPattern

has URI regular expression pattern – Defines a regular expression pattern matching URIs in the dataset.

URI:: http://rdfs.org/ns/void#uriRegexPattern
Domain:: void:Dataset

Property: void:uriSpace

URI space – A URI that is a common string prefix of all the entity URIs in a void:Dataset.

URI:: http://rdfs.org/ns/void#uriSpace
Domain:: void:Dataset
Range:: rdfs:Literal

Property: void:vocabulary

vocabulary – A vocabulary that is used in the dataset.

URI:: http://rdfs.org/ns/void#vocabulary
Domain:: void:Dataset