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Vocabulary of Interlinked Datasets (VoID)

Metadata

IRI
http://vocab.deri.ie/void
Publisher(s)
Digital Enterprise Research Institute, NUI Galway
Creator(s)
Richard Cyganiak of Digital Enterprise Research Institute, NUI Galway
Michael Hausenblas of LiDRC
Keith Alexander of Talis
Jun Zhao of Department of Zoology, University of Oxford
Created
2010-01-26
Modified
2011-03-06
Ontology Source
RDF (turtle)

Description

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.

Table of Contents

  1. Classes
  2. Object Properties
  3. Functional Properties
  4. Datatype Properties
  5. Namespaces

Overview

classes
Figure 1: VOID classes in a hierarchy
classes
Figure 2: VOID properties in a hierarchy

Classes

datasetc

IRI http://rdfs.org/ns/void#Dataset
Description A set of RDF triples that are published, maintained or aggregated by a single provider.
Sub-classes void:Linksetc
In domain of void:openSearchDescriptionop
void:dataDumpop
void:rootResourceop
void:propertiesdp
void:uriSpacedp
void:classPartitionop
void:triplesdp
void:vocabularyop
void:featureop
void:exampleResourceop
void:uriRegexPattern
void:distinctObjectsdp
void:propertyPartitionop
void:propertyfp
void:sparqlEndpointop
void:classfp
void:entitiesdp
void:classesdp
void:subsetop
void:documentsdp
void:distinctSubjectsdp
void:uriLookupEndpointop
In range of void:classPartitionop
void:subsetop
void:targetop
void:objectsTargetfp
void:propertyPartitionop
void:subjectsTargetfp
void:inDatasetop

dataset descriptionc

IRI http://rdfs.org/ns/void#DatasetDescription
Description A web resource whose foaf:primaryTopic or foaf:topics include void:Datasets.
Super-classes foaf:Documentc

linksetc

IRI http://rdfs.org/ns/void#Linkset
Description A collection of RDF links between two void:Datasets.
Super-classes void:Datasetc
In domain of void:targetop
void:objectsTargetfp
void:linkPredicateop
void:subjectsTargetfp

technical featurec

IRI http://rdfs.org/ns/void#TechnicalFeature
Description A technical feature of a void:Dataset, such as a supported RDF serialization format.
In range of void:featureop

Object Properties

class partitionop

IRI http://rdfs.org/ns/void#classPartition
Description A subset of a void:Dataset that contains only the entities of a certain rdfs:Class.
Super-properties void:subsetop
Domain(s) void:Datasetc
Range(s) void:Datasetc

Data Dumpop

IRI http://rdfs.org/ns/void#dataDump
Description An RDF dump, partial or complete, of a void:Dataset.
Domain(s) void:Datasetc
Range(s) rdfs:Resourcec

example resource of datasetop

IRI http://rdfs.org/ns/void#exampleResource
Domain(s) void:Datasetc
Range(s) rdfs:Resourcec

featureop

IRI http://rdfs.org/ns/void#feature
Domain(s) void:Datasetc
Range(s) void:TechnicalFeaturec

in datasetop

IRI http://rdfs.org/ns/void#inDataset
Description Points to the void:Dataset that a document is a part of.
Domain(s) foaf:Documentc
Range(s) void:Datasetc

a link predicateop

IRI http://rdfs.org/ns/void#linkPredicate
Domain(s) void:Linksetc
Range(s) rdf:Propertyc

open search descriptionop

IRI http://rdfs.org/ns/void#openSearchDescription
Description An OpenSearch description document for a free-text search service over a void:Dataset.
Domain(s) void:Datasetc
Range(s) foaf:Documentc

property partitionop

IRI http://rdfs.org/ns/void#propertyPartition
Description A subset of a void:Dataset that contains only the triples of a certain rdf:Property.
Super-properties void:subsetop
Domain(s) void:Datasetc
Range(s) void:Datasetc

root resourceop

IRI http://rdfs.org/ns/void#rootResource
Description 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.
Domain(s) void:Datasetc

has a SPARQL endpoint atop

IRI http://rdfs.org/ns/void#sparqlEndpoint
Domain(s) void:Datasetc

has subsetop

IRI http://rdfs.org/ns/void#subset
Domain(s) void:Datasetc
Range(s) void:Datasetc

Targetop

IRI http://rdfs.org/ns/void#target
Description One of the two datasets linked by the Linkset.
Domain(s) void:Linksetc
Range(s) void:Datasetc

has an URI look-up endpoint atop

IRI http://rdfs.org/ns/void#uriLookupEndpoint
Description Defines a simple URI look-up protocol for accessing a dataset.
Domain(s) void:Datasetc

vocabularyop

IRI http://rdfs.org/ns/void#vocabulary
Description A vocabulary that is used in the dataset.
Domain(s) void:Datasetc

Functional Properties

classfp

IRI http://rdfs.org/ns/void#class
Description The rdfs:Class that is the rdf:type of all entities in a class-based partition.
Domain(s) void:Datasetc
Range(s) rdfs:Classc

Objects Targetfp

IRI http://rdfs.org/ns/void#objectsTarget
Description The dataset describing the objects of the triples contained in the Linkset.
Super-properties void:targetop
Domain(s) void:Linksetc
Range(s) void:Datasetc

propertyfp

IRI http://rdfs.org/ns/void#property
Description The rdf:Property that is the predicate of all triples in a property-based partition.
Domain(s) void:Datasetc
Range(s) rdf:Propertyc

Subjects Targetfp

IRI http://rdfs.org/ns/void#subjectsTarget
Description The dataset describing the subjects of triples contained in the Linkset.
Super-properties void:targetop
Domain(s) void:Linksetc
Range(s) void:Datasetc

Datatype Properties

classesdp

IRI http://rdfs.org/ns/void#classes
Description 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.
Domain(s) void:Datasetc
Range(s) xsd:integerc

distinct objectsdp

IRI http://rdfs.org/ns/void#distinctObjects
Description 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.
Domain(s) void:Datasetc
Range(s) xsd:integerc

distinct subjectsdp

IRI http://rdfs.org/ns/void#distinctSubjects
Description 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.
Domain(s) void:Datasetc
Range(s) xsd:integerc

number of documentsdp

IRI http://rdfs.org/ns/void#documents
Description 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.
Domain(s) void:Datasetc
Range(s) xsd:integerc

number of entitiesdp

IRI http://rdfs.org/ns/void#entities
Description The total number of entities that are described in a void:Dataset.
Domain(s) void:Datasetc
Range(s) xsd:integerc

number of propertiesdp

IRI http://rdfs.org/ns/void#properties
Description 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.
Domain(s) void:Datasetc
Range(s) xsd:integerc

number of triplesdp

IRI http://rdfs.org/ns/void#triples
Description The total number of triples contained in a void:Dataset.
Domain(s) void:Datasetc
Range(s) xsd:integerc

URI spacedp

IRI http://rdfs.org/ns/void#uriSpace
Description A URI that is a common string prefix of all the entity URIs in a void:Dataset.
Domain(s) void:Datasetc
Range(s) rdfs:Literalc

Namespaces

default (:)
http://rdfs.org/ns/void#
adms
http://www.w3.org/ns/adms#
dc
http://purl.org/dc/elements/1.1/
dct
http://purl.org/dc/terms/
foaf
http://xmlns.com/foaf/0.1/
owl
http://www.w3.org/2002/07/owl#
rdf
http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs
http://www.w3.org/2000/01/rdf-schema#
sdo
https://schema.org/
vann
http://purl.org/vocab/vann/
void
http://rdfs.org/ns/void#
xml
http://www.w3.org/XML/1998/namespace
xsd
http://www.w3.org/2001/XMLSchema#

Legend

cClasses
opObject Properties
fpFunctional Properties
dpData Properties
dpAnnotation Properties
pProperties
niNamed Individuals