RDA and Linked Data
by Gordon Dunsire
National Seminar,
National Library of Finland,Helsinki, Finland, 25 March 2014

Based on RDA and the Semantic Web:
Lectio magistralis in Library Science,
Florence University, Florence, Italy
4th March, 2014

Functional Requirements for
Bibliographic Records
Usertasks

Work

Expression

Manifestation

Item

Content attributes
Carrier attributes
JSC, 2005

AACR3ItemSemantic Web (Berners-Lee)
Structured
collectionsof information

Sets of inference rules

Automated reasoning

Web of linked data
Web of linked documents
Web of linked computing devices

ex:“is derivativework of”

ex:“This work”
ex:“This work”

ex:“That work”
ex:“has derivative work”
ex:“has title”“RDA and theSemantic Web”

ex:“has author”“Gordon Dunsire”
One
ex:“has name”
giant
global ex:“G. J. Dunsire”
graphGordon

ex:“has author”

Dunsireex:“is author of”
ex:“hascountry of birth”

ex:“has alternatename”
ex:
ScotlandData vs Ontology
ex:“This work”

ex:“has author”

ex:GordonDunsireData triple“has author”

Ontology
tripleURI
ex:
hasAuthor

ex:“has label”

ex:“has type”“Property”

Inference rules: sub-property
ex:
Property1ex:“is subpropertyof”

ex:“has label”

ex:Property2

ex:“This work”“has author”@en

ex:“has label”

ex:“has author”“has creator”@en“Gordon Dunsire”

ex:“has creator”
ex:“Gordon Dunsire”“This work”

RDF vocabularies: DCT + RDFS
Dublin Core Terms + RDF Schema
rdfs:label
dcterms:
creator“Creator”

rdfs:range

Source of URIs

rdfs:label“Agent”

dcterms:
Agent“A resource thatacts or has therdfs:comment power to act.”Inference rules: range
dcterms:
creator

rdfs:range

ex:“This work”
ex:GordonDunsiredcterms:
agent

dcterms:creator

rdfs:typeex:
GordonDunsiredcterms:
AgentBenefits expected from London 2007
meetingThe library community gets a metadata standard thatis compatible with the Web Architecture and that isfully interoperable with other Semantic Web
initiatives
The DCMI community gets a libraries application
profile firmly based on the DCAM and FRBR (whichwill be a high profile exemplar for others to follow)
The Semantic Web community get a significant poolof well thought-out metadata terms to re-useThere is wider uptake of RDA

Activities 2007Development of an RDA Element Vocabulary
Development of an RDA DC Application Profile
based on FRBR and FRAD
Disclosure of RDA Value Vocabularies using
RDF/RDFS/SKOS

Opaque URI(only for machines)
Compact URI = rdact:1010

…

DCAM and RDA

Dublin Core Abstract Model<indecs>

Basic RDA metadata structures
ex:
ExpressionURI

rdae:“has contenttype”
rdact:
1010

e.g vocabulary encoding scheme
rdfs:label

skos:inScheme“notated music”@enrdaterms:
RDAContentType

High-level metadata structures
Unconstrainedrdau:“has title”

Constrained by FRBR (domain)
rdfs:“domain”
rdac:“Manifestation”
rdfs:“domain”sP

rdam:“has title”
sP

rdau:
“has title proper”

rdam:“has title proper”

sP

sP = rdfs:”sub-property of”

Relationship designatorsrdau:“has creator”
sP
rdaw:“has creator”
sP
rdac: rdfs:
rdfs: rdac:“Work” “domain”“range” “Agent”
rdaw:“has designer”

rdau:“has designer”
sP

sP = rdfs:”sub-property of”

Link-ability
EntityDomains

Properties

Relationships

Attributes

Range No Range

WorkExpression

235
235

200
190

3545Manifestation

21050160

Item
Agent50225

40
175

1050

Triple clusters

Triple chains
Covering all media

Literalsrdaw:“has related work”

Rich detailrdaw:“has accompanying work relationship with”rdaw:“is complemented by (work)”rdaw:“is screenplay (work)”rdaw:“is video screenplay (work)”

sub-property ladderInteroperabilityrdau:“has creator”
rdaw:“has creator”

rdau:“has performer”

rdau:“has actor”
rdau:“has voice actor”

???

dc:
“creator”

dcterms:“creator”

To do (from 2007 …)
Publish more RDA value vocabulariesDevelop cross-entity elements
E.g. Work-Expression relationship designators

Develop Application Profile for RDA “core”
Develop RDF elements for aggregatedstatements (RDA, ISBD, MARC, …)
E.g. Place of publication -> Publication statement

To do (from now)More machine-actionability (internal)
Extent
PlaceRDA/ONIX Framework

Maps to related linked data elements (external)
RDA->MARC 21 relators ISBD->RDA []RDA-BIBFRAME [?]RDA-FRBR [!]What is an RDA record?

Achievements: 5+ years on
Rich set of elements and value vocabularies for“bibliographic control”
At global, “universal” level“a metadata standard that is compatible with theWeb Architecture and that is fully interoperablewith other Semantic Web initiatives”
“a significant pool of well thought-out metadataterms to re-use”
Wider uptake of RDA? …

Thank you!
gordon@gordondunsire.com