has a SPARQL endpoint at
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
domain: dataset

number of entities
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: The total number of entities that are described in a void:Dataset.
domain: dataset
range: integer

dataset
disjoint with: Nothing
subclass of: Thing
type: Class
comment: A set of RDF triples that are published, maintained or aggregated by a single provider.

Subjects Target
sub property of: Target
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: FunctionalProperty
type: ObjectProperty
type: Property
comment: The dataset describing the subjects of triples contained in the Linkset.
domain: linkset
range: dataset

open search description
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: An OpenSearch description document for a free-text search service over a void:Dataset.
domain: dataset
range: Document

Digital Enterprise Research Institute, NUI Galway
member: Richard Cyganiak
type: Agent
type: Thing

Data Dump
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: An RDF dump, partial or complete, of a void:Dataset.
domain: dataset
range: Resource

has subset
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
domain: dataset
range: dataset

vocabulary
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: A vocabulary that is used in the dataset.
domain: dataset

dataset description
disjoint with: Nothing
subclass of: Document
subclass of: Thing
type: Class
comment: A web resource whose foaf:primaryTopic or foaf:topics include void:Datasets.

Keith Alexander
type: Person
type: Thing

Michael Hausenblas
type: Person
type: Thing

number of documents
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: 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: dataset
range: integer

Vocabulary of Interlinked Datasets (VoID)
created: 2010-01-26
preferred namespace uri: http://rdfs.org/ns/void#
preferred namespace prefix: void
type: SemanticAsset
part of: vocab.deri.ie
type: Ontology
creator: Michael Hausenblas
creator: Jun Zhao
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.
type: Thing
status: UnderDevelopment
publisher: Digital Enterprise Research Institute, NUI Galway
creator: Keith Alexander
creator: Richard Cyganiak
modified: 2011-03-06

property
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: FunctionalProperty
type: ObjectProperty
type: Property
comment: The rdf:Property that is the predicate of all triples in a property-based partition.
domain: dataset
range: Property

has an URI look-up endpoint at
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: Defines a simple URI look-up protocol for accessing a dataset.
domain: dataset

Jun Zhao
type: Person
type: Thing

distinct subjects
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: 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: dataset
range: integer

Talis
member: Keith Alexander
type: Agent
type: Thing

in dataset
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: Points to the void:Dataset that a document is a part of.
domain: Document
range: dataset

example resource of dataset
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
domain: dataset
range: Resource

a link predicate
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
domain: linkset
range: Property

Department of Zoology, University of Oxford
member: Jun Zhao
type: Agent
type: Thing

property partition
sub property of: topObjectProperty
sub property of: has subset
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: A subset of a void:Dataset that contains only the triples of a certain rdf:Property.
domain: dataset
range: dataset

class
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: FunctionalProperty
type: ObjectProperty
type: Property
comment: The rdfs:Class that is the rdf:type of all entities in a class-based partition.
domain: dataset
range: Class

number of properties
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: 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: dataset
range: integer

root resource
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: 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: dataset

class partition
sub property of: topObjectProperty
sub property of: has subset
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: A subset of a void:Dataset that contains only the entities of a certain rdfs:Class.
domain: dataset
range: dataset

LiDRC
member: Michael Hausenblas
type: Agent
type: Thing

linkset
disjoint with: Nothing
subclass of: Thing
subclass of: dataset
type: Class
comment: A collection of RDF links between two void:Datasets.

Objects Target
sub property of: Target
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: FunctionalProperty
type: ObjectProperty
type: Property
comment: The dataset describing the objects of the triples contained in the Linkset.
domain: linkset
range: dataset

has URI regular expression pattern
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: Defines a regular expression pattern matching URIs in the dataset.
domain: dataset

URI space
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: A URI that is a common string prefix of all the entity URIs in a void:Dataset.
domain: dataset
range: Literal

feature
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
domain: dataset
range: technical feature

classes
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: 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: dataset
range: integer

Richard Cyganiak
type: Person
type: Thing

number of triples
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: The total number of triples contained in a void:Dataset.
domain: dataset
range: integer

Target
sub property of: topObjectProperty
property disjoint with: bottomObjectProperty
type: ObjectProperty
type: Property
comment: One of the two datasets linked by the Linkset.
domain: linkset
range: dataset

distinct objects
sub property of: topDataProperty
property disjoint with: bottomDataProperty
type: DatatypeProperty
type: Property
comment: 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: dataset
range: integer

technical feature
disjoint with: Nothing
subclass of: Thing
type: Class
comment: A technical feature of a void:Dataset, such as a supported RDF serialization format.