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The Common European Research Information Format (CERIF) Ontology Specification

The Common European Research Information Format Ontology
CERIF Ontology
0.2

Namespace Document 01 February

Vocabulary based on CERIF Model 1.3

This version:
http://eurocris.org/ontology/cerif/20130201/index.html (RDF)
Latest version:
http://eurocris.org/ontology/cerif/index.html (RDF)
Previous version:
http://spi-fm.uca.es/neologism/cerif (RDF)
Authors:
Miguel-Ángel Sicilia (on behalf of Open Data Task Group in EuroCRIS)
EuroCRIS EuroCRIS: The European Organization for International Research Information
Announcements, descriptions, use cases, ...
GoogleCode Common European Research Information Format (CERIF) Ontology repository
Source code, reference implementation, guidelines, ...

Valid XHTML + RDFa Creative Commons License This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License. This copyright applies to the Common European Research Information Format (CERIF) Ontology Specification and accompanying documentation in RDF. Permissions beyond the scope of this license may be available at http://www.eurocris.org Regarding underlying technology, the Common European Research Information Format (CERIF) Ontology uses W3C's RDF technology, an open Web standard that can be freely used by anyone.


Abstract

The Common European Research Information Format (CERIF) Ontology Specification provides basic concepts and properties for describing research information as semantic data. This document contains a RDFa description of the Common European Research Information Format (CERIF) Ontology developed by EuroCRIS.

Table of Contents

Status of This Document

The template of this specification is derived from the FOAF Vocabulary Specification, which was created by Dan Brickley and Libby Miller, and the Music Ontology Specification, which was created by Yves Raimond. Also, it was customized for EuroCRIS by Iván Ruiz-Rube.

This document is created by combining the RDFS machine-readable Common European Research Information Format (CERIF) Ontology with a human-readable HTML representation that includes RDFa annotations. The RDF/XML version of the specification is also available directly from the namespace URI.

This specification serves as the CERIF Ontology "namespace document". As such it describes the CERIF Ontology and the terms (RDF classes and properties) that constitute it, so that Semantic Web applications can use those terms in a variety of RDF-compatible document formats and applications.

The CERIF Ontology at a glance

A snapshot of the Common European Research Information Format (CERIF) Ontology is presented below.

The CERIF Ontology - snapshot

An a-z index of CERIF Ontology terms, by class (categories or types) and by property.

Introduction

Since the publication of the first version of the CERIF model, it has grown in quantity and quality of the concepts represented in it. The model became a recommendation of the European Commission in 1991 and 2000. Thanks to CERIF data model, it is possible to develop comprehensive research information systems (RIS) and at the same time, to allow further interoperability between different RIS. This specification is intended to adapt CERIF research information according to the Linked Data paradigm. This document is targeted to providers of research information systems based on CERIF, interested on publishing data according to the Linked Data approach.

The current ontology resulted from a bottom-up approach of the transformation of a relational structure to an ontological structure. Entities and attributes of the extended relational CERIF model have been transformed into ontology axioms; the types and roles as defined in the CERIF Semantics have been translated into a vocabulary.

The CERIF research entities have been transformed into RDF classes and their attributes into properties. For the class names we used conceptual names (e.g. person or project) instead of the physical CERIF table names (cfPers, cfProj), because there is no longer a limitation imposed by any database, and linked data are semantically inspired. The resulting properties and classes are described through common annotation properties like rdfs:label and rdfs:comment in the ontology. In addition to concrete RDF classes (person, project), we added a number of abstract classes to group the class concepts inline with CERIF specification documents, namely: Base, Result, SecondLevel, and Infrastructure; these share a cerif:internalIdentier property.

In addition to the above ontology, we defined a controlled vocabulary to gather the relevant types and roles in the research context of the involved VOA3R entities. The vocabulary includes several RDF classes describing CERIF classification schemes, e.g. types of organizational units, as well as a number of RDF properties semantically enriching the relationships between CERIF entities, like roles of a person in a research project.

Context

Example

A graphic of a simple example of an use case of the Common European Research Information Format (CERIF) Ontology - A given person is manager of a research project:

The Common European Research Information Format (CERIF) Ontology - A given person is manager of a research project

A graphic of another example of an use case of the Common European Research Information Format (CERIF) Ontology - A given organization is classified as a university:

The Common European Research Information Format (CERIF) Ontology - A given organization is classified as a university

RDF/N3 representation of a simple example of an use case of the Common European Research Information Format (CERIF) Ontology - a research project (see also N3 for complete and downloadable representation of this example):

@prefix cerif: <http://eurocris.org/ontology/cerif/0.1#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dcterms: <http://purl.org/dc/terms/> .

<http://example.org/resource/projects/VOA3R>
  a cerif:Project ;
  cerif:title "Virtual Open Access Agriculture and Aquaculture Repository"@en ;
  cerif:uri <http://voa3r.cc.uah.es> ;
  cerif:startDate "2010-06-01"^^xsd:date ;
  cerif:endDate "2013-05-01"^^xsd:date ;
  cerif:abstract "The general objective of the VOA3R project is to improve the
   spread of European agriculture and aquaculture research results by using an innovative approach
   to sharing open access research products"@en ;
  cerif:acronym "VOA3R" ;
  cerif:internalIdentifier "cfProj-voa3r-ID" ;
  cerif:keyword "Agriculture", "Aquaculture", "Open Access", "Research"@en ;
  ## Materialized inferred triples
  rdfs:label "Virtual Open Access Agriculture and Aquaculture Repository"@en ;
  dc:title "Virtual Open Access Agriculture and Aquaculture Repository"@en ;
  foaf:homepage <http://voa3r.cc.uah.es> .
  dcterms:abstract "The general objective of the VOA3R project is to improve the
     spread of European agriculture and aquaculture research results by using an innovative approach
     to sharing open access research products"@en ;
  dc:subject "Agriculture", "Aquaculture", "Open Access", "Research"@en .                        

Ontology Classes and Properties

The Common European Research Information Format (CERIF) Ontology introduces the following classes and properties. There is a link at the top of this document to the RDF/XML version.

Classes and Properties (full detail)


Classes

Class: cerif:BaseEntity

Base Entity - This abstract class brings together the main entities of the CERIF model.
Status: unknown
Properties include: internalIdentifier uri isClassifiedBy isLinkedByEntity keyword linksToEntity
Sub class of Entity
Has sub class Person (cfPers) Project Organizational Unit (cfOrgUnit) cerif:Person cerif:Project cerif:OrganizationalUnit

[#] [back to top]


Class: cerif:Cite

Cite - Cite
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Classification

Classification - Represents the classification of a given entity
Status: unknown
Properties include: classification startDate
Used with: isClassifiedBy

[#] [back to top]


Class: cerif:CurriculumVitae

Curriculum Vitae - Curriculum Vitae
Status: unknown
Properties include: digitalCV
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:ElectronicAddress

Electronic Address - ElectronicAddress
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Entity

Entity - Common superclass of all non-link entities, as an aid in querying.
Status: unknown
Has sub class Base Entity Infrastructure Entity Second-level Entity cerif:BaseEntity cerif:InfrastructureEntity cerif:SecondLevelEntity

[#] [back to top]


Class: cerif:Equipment

Equipment - Equipment
Status: unknown
Properties include: inventoryIdentifier manufacturerIdentifier
Sub class of Infrastructure Entity

[#] [back to top]


Class: cerif:Event

Event - Event
Status: unknown
Properties include: cityTown countryCode feeOrFree startDate endDate
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:ExpSkill

Expertise and skills - Expertise and skills
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Facility

Facility - Facility
Status: unknown
Sub class of Infrastructure Entity

[#] [back to top]


Class: cerif:Funding

Funding - Funding
Status: unknown
Properties include: funding startDate endDate
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Metrics

Metrics - Metrics
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Patent

Patent - A registered patent as a research result
Status: unknown
Properties include: registrationDate approvalDate countryCode
Sub class of Result Entity bibo:Patent

[#] [back to top]


Class: cerif:PostalAddress

Postal Address - Postal Address
Status: unknown
Properties include: cityTown countryCode addressLine postCode
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:PriceAward

Price Award - Price Award
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Product

Product - A research result that is classified neither as a patent nor as a publication.
Status: unknown
Sub class of Result Entity

[#] [back to top]


Class: cerif:Project

Project - A research project
Status: unknown
Properties include: abstract acronym name startDate endDate
Sub class of Base Entity foaf:Project

[#] [back to top]


Class: cerif:Publication

Publication - Represents a scientific or academic publication
Status: unknown
Sub class of Result Entity bibo:Document

[#] [back to top]


Class: cerif:Qualification

Qualification - Qualification
Status: unknown
Sub class of Second-level Entity

[#] [back to top]


Class: cerif:Relationship

Relationship - intermediate entity between two entities.
Status: unknown
Properties include: role startDate endDate
Used with: linksToEntity isLinkedByEntity

[#] [back to top]


Class: cerif:ResultEntity

Result Entity - Represents a research result
Status: unknown
Properties include: internalIdentifier endDate uri isClassifiedBy isLinkedByEntity keyword linksToEntity
Has sub class Product Patent Publication cerif:Product cerif:Patent cerif:Publication

[#] [back to top]


Class: cerif:SecondLevelEntity

Second-level Entity - The 2nd level entities allow for the representation of the research context by linking to them from the base and result entities.
Status: unknown
Properties include: internalIdentifier uri isClassifiedBy isLinkedByEntity keyword linksToEntity
Sub class of Entity
Has sub class Postal Address Funding Curriculum Vitae Metrics Event Cite Qualification Electronic Address Expertise and skills Price Award cerif:PostalAddress cerif:Funding cerif:CurriculumVitae cerif:Metrics cerif:Event cerif:Cite cerif:Qualification cerif:ElectronicAddress cerif:ExpSkill cerif:PriceAward

[#] [back to top]


Class: cerif:Service

Service - Service
Status: unknown
Sub class of Infrastructure Entity

[#] [back to top]


Properties

Property: cerif:abstract

Abstract - Abstract of a given Project
Status: unknown
Domain: Project

[#] [back to top]


Property: cerif:acronym

Acronym - Acronym of a given Project or an Organisation Unit
Status: unknown
Domain: Project Organizational Unit (cfOrgUnit)

[#] [back to top]


Property: cerif:addressLine

Address Line - Numbered line of a given postal address
Status: unknown
Domain: Postal Address

[#] [back to top]


Property: cerif:agrovoc

Agrovoc Classification - External Classification Scheme according to Agrovoc Vocabulary
Status: unknown
Sub property of dc:subject

[#] [back to top]


Property: cerif:approvalDate

Approval Date - Approval Date of a patent
Status: unknown
Domain: Patent
Sub property of dc:date

[#] [back to top]


Property: cerif:birthdate

Birthdate - BirthDate of a Person
Status: unknown
Domain: Person (cfPers)
Sub property of foaf:birthday

[#] [back to top]


Property: cerif:cityTown

City Town - City Town of an physical localisation
Status: unknown
Domain: Postal Address Event

[#] [back to top]


Property: cerif:classification

Classification - Indicates a classification for a entity according to a suitable external vocabulary
Status: unknown
Domain: Classification
Range: rdfs:Resource
Sub property of Link

[#] [back to top]


Property: cerif:code

Code - Generic property for represent international and shared codes
Status: unknown
Has sub property Country Code Language Code Post Code Currency Code

[#] [back to top]


Property: cerif:country

Country - A given country - http://dbpedia.org/ontology/Country
Status: unknown

[#] [back to top]


Property: cerif:countryCode

Country Code - International code of a given country
Status: unknown
Domain: Postal Address Patent Event
Sub property of Code

[#] [back to top]


Property: cerif:currency

Currency - Specific currency used for denote amounts, prices and turnovers. Linking with http://dbpedia.org/ontology/Language
Status: unknown

[#] [back to top]


Property: cerif:currencyCode

Currency Code - Code of a specific currency used for denote amounts, prices and turnovers.
Status: unknown
Sub property of Code
Has sub property Turnover Currency Code Funding Currency Code Price Currency Code

[#] [back to top]


Property: cerif:digitalCV

Digital CV - Digital CV
Status: unknown
Domain: Curriculum Vitae

[#] [back to top]


Property: cerif:endDate

End Date - End of a period of time
Status: unknown
Domain: Result Entity Relationship Project Funding Event
Sub property of dc:date

[#] [back to top]


Property: cerif:feeOrFree

Fee Or Free - Flag indicating if the event is fee or free
Status: unknown
Domain: Event

[#] [back to top]


Property: cerif:fraction

Fraction - Fractional value to indicate a classification reference or a % allocation in the relationship between entities.
Status: unknown
Range: xsd:float

[#] [back to top]


Property: cerif:funding

Funding - Amount of a given Funding (measured in a specific currency)
Status: unknown
Domain: Funding
Sub property of Money

[#] [back to top]


Property: cerif:fundingCurrencyCode

Funding Currency Code - Currency code used to denote the funding amount
Status: unknown
Sub property of Currency Code

[#] [back to top]


Property: cerif:gender

Gender - Gender of a CERIF person
Status: unknown
Domain: Person (cfPers)
Sub property of foaf:gender

[#] [back to top]


Property: cerif:headcount

Headcount - Number of persons enrolled in a Organisation Unit
Status: unknown
Domain: Organizational Unit (cfOrgUnit)

[#] [back to top]


Property: cerif:internalIdentifier

Internal Identifier - Internal Identifier for a research entity. It fits with the primary key in the corresponding table from the internal database
Status: unknown
Domain: Result Entity Base Entity Second-level Entity
Sub property of dc:identifier

[#] [back to top]


Property: cerif:inventoryIdentifier

Inventory Identifier - The equipment owner's inventory identifier.
Status: unknown
Domain: Equipment
Sub property of dc:identifier

[#] [back to top]


Property: cerif:isClassifiedBy

Is Classified By - A entity is classified within a time interval according to CERIF Semantic Vocabulary.
Status: unknown
Domain: Result Entity Base Entity Infrastructure Entity Second-level Entity
Range: Classification

[#] [back to top]


Property: cerif:isLinkedByEntity

Is Linked by Entity - This is an abstract property to group all properties that inversely relate a entity with other through a time-stamped link.
Status: unknown
Domain: Result Entity Base Entity Infrastructure Entity Second-level Entity
Range: Relationship
Has sub property is Linked By Project is Linked By Publication Is Linked By a Organisation Unit Is Linked By Funding Is Linked By a Person

[#] [back to top]


Property: cerif:isLinkedByFunding

Is Linked By Funding - A given Funding is related with a entity through a time-stamped link.
Status: unknown
Sub property of Is Linked by Entity

[#] [back to top]


Property: cerif:isLinkedByOrganisationUnit

Is Linked By a Organisation Unit - A given Organisation Unit is related with a entity through a time-stamped link.
Status: unknown
Sub property of Is Linked by Entity

[#] [back to top]


Property: cerif:isLinkedByPerson

Is Linked By a Person - A given Person is related with a entity through a time-stamped link.
Status: unknown
Sub property of Is Linked by Entity

[#] [back to top]


Property: cerif:isLinkedByProject

is Linked By Project - A given Project is related with a entity through a time-stamped link.
Status: unknown
Sub property of Is Linked by Entity

[#] [back to top]


Property: cerif:isLinkedByPublication

is Linked By Publication - A given Publication is related with a entity through a time-stamped link.
Status: unknown
Sub property of Is Linked by Entity

[#] [back to top]


Property: cerif:keyword

Keyword - Keywords of a given entity
Status: unknown
Domain: Result Entity Base Entity Second-level Entity
Sub property of dc:subject

[#] [back to top]


Property: cerif:language

Language - A given language. Linking to http://dbpedia.org/ontology/Language
Status: unknown

[#] [back to top]


Property: cerif:languageCode

Language Code - International code of a given language
Status: unknown
Sub property of Code

[#] [back to top]


Property: cerif:linksToEntity

Links to Entity - This is an abstract property to group all properties that directly relate a entity with other through a time-stamped link.
Status: unknown
Domain: Result Entity Base Entity Infrastructure Entity Second-level Entity
Range: Relationship
Has sub property Links To a Project Links To a Publication Links To a Organisation Unit Is Linked By a Person Links to Funding Links to a Postal Address

[#] [back to top]


Property: cerif:linksToFunding

Links to Funding - It relates a entity with a given Funding entity through a time-stamped link.
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:linksToOrganisationUnit

Links To a Organisation Unit - It relates a entity with a given Organisation Unit through a time-stamped link.
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:linksToPerson

Is Linked By a Person - It relates a entity with a given Person through a time-stamped link.
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:linksToPostalAddress

Links to a Postal Address - It relates a entity with a given Postal Address through a time-stamped link. Used, for example, in Persons and Organisation Units
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:linksToProject

Links To a Project - It relates a entity with a given Project through a time-stamped link.
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:linksToPublication

Links To a Publication - It relates a entity with a given Publication through a time-stamped link.
Status: unknown
Sub property of Links to Entity

[#] [back to top]


Property: cerif:manufacturerIdentifier

Manufacturer Identifier - The equipment manufacturer's ID.
Status: unknown
Domain: Equipment
Sub property of dc:identifier

[#] [back to top]


Property: cerif:money

Money - This property embraces all Currency-dependent properties
Status: unknown
Range: xsd:float
Has sub property Price Turnover Funding

[#] [back to top]


Property: cerif:name

Name - Name of a CERIF entity, e.g.: Person, or Organization Unit
Status: unknown
Domain: Project Person (cfPers)
Sub property of foaf:name

[#] [back to top]


Property: cerif:patentNumber

Patent Number - Number of a Registered Patent
Status: unknown
Sub property of dc:identifier

[#] [back to top]


Property: cerif:postCode

Post Code - Postal Code of a given Address
Status: unknown
Domain: Postal Address
Sub property of Code

[#] [back to top]


Property: cerif:price

Price - Quantity of payment or compensation given by one party to another in return for goods or service (measured in a specific currency)
Status: unknown
Sub property of Money

[#] [back to top]


Property: cerif:productNumber

Product Number - Number of a Product
Status: unknown
Sub property of dc:identifier

[#] [back to top]


Property: cerif:registrationDate

Registration Date - Registration Date of a patent
Status: unknown
Domain: Patent
Sub property of dc:date

[#] [back to top]


Property: cerif:researchActivities

Research Activities - Research Activities
Status: unknown
Domain: Organizational Unit (cfOrgUnit)

[#] [back to top]


Property: cerif:researchInterests

Research Interests - Research Interests
Status: unknown
Domain: Person (cfPers)

[#] [back to top]


Property: cerif:role

Role - Indicates a role for the association or composition between two CERIF entities indicated by a term from a suitable external vocabulary
Status: unknown
Domain: Relationship
Range: rdfs:Resource
Sub property of Link

[#] [back to top]


Property: cerif:startDate

Start Date - Beginning of a period of time
Status: unknown
Domain: Relationship Project Funding Classification Event
Sub property of dc:date

[#] [back to top]


Property: cerif:title

Title - Title of a given CERIF entity
Status: unknown
Sub property of dc:title

[#] [back to top]


Property: cerif:turnover

Turnover - Turnover of a Organisation Unit (measured in a specific currency)
Status: unknown
Domain: Organizational Unit (cfOrgUnit)
Sub property of Money

[#] [back to top]


Property: cerif:turnoverCurrencyCode

Turnover Currency Code - Currency Code used to denote turnovers
Status: unknown
Sub property of Currency Code

[#] [back to top]


Property: cerif:uri

URI - Uniform Resource Identifier related with a given CERIF entity
Status: unknown
Domain: Result Entity Base Entity Second-level Entity
Sub property of foaf:homepage

[#] [back to top]


External Vocabulary References

The description of the terms in the CERIF Ontology 'dictionary' make reference to classes and properties elsewhere. This section of the CERIF Ontology specification provides a placeholder reference for any CERIF Ontology mention of externally defined terms. For example, sometimes we might say that CERIF Ontology property has a domain or range of an externally defined class, or that a CERIF Ontology class is a sub-class of an external class, or 'disjoint with' such a class (ie. has no common members). Such claims help fix the intended meaning of CERIF Ontology terms in relationship to other 'peer' vocabularies. Currently, the CERIF Ontology makes reference to the following vocabularies:

List of datasets publishing CERIF linked data

Evolution and Extension of the CERIF Ontology

The Common European Research Information Format (CERIF) Ontology is identified by the namespace URI 'http://eurocris.org/ontology/cerif#'. Revisions and extensions of the Common European Research Information Format (CERIF) Ontology are conducted through edits to this document, which by convention is accessible in the Web via the namespace URI. For practical and deployment reasons, note that we do not update the namespace URI as the vocabulary matures.

The evolution of the Common European Research Information Format (CERIF) Ontology is best considered in terms of the stability of individual vocabulary terms, rather than the specification as a whole. As terms stabilise in usage and documentation, they progress through the categories 'unstable', 'testing' and 'stable'. Older terms are marked 'archaic' which allows the possibility of older forms to become modern again.

Acknowledgments

This work was supported by EC Funding under the VOA3R project through the grant agreement no. 250525, and META-NET through grant agreement no. 249119.

Recent Changes

=========================
Version 0.2 (February 2013)
=========================
* ADDED: New CERIF Base Entity
* CHANGED: Ontology location in EuroCRIS domain
    
=========================
Version 0.1 (January 2012)
=========================
    
* ADDED: Initial version of the ontology
    
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