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RDA and the semantic Web. Lectio magistralis in Library Science b y Gordon Dunsire Florence University, Florence , Italy 4th March, 2014. In the beginning …. 3?. Toronto, 1997. General Material Designator (US). General Material Designator (UK). Content vs Carrier / Haworth.

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Rda and the semantic web

RDA and the semantic Web

Lectiomagistralis in Library Science

by Gordon Dunsire

Florence University, Florence, Italy

4th March, 2014


Rda and the semantic web

In the beginning …

3?

Toronto, 1997


Rda and the semantic web

General Material Designator (US)

General Material Designator (UK)

Content vs Carrier / Haworth

Logical analysis / Delsey

Chief source of

information

Item

Series

Subseries

Type of publication

Class of

materials

Structure

of AACR3

$£$£$£!!!

?

ISBD(G)


Rda and the semantic web

Functional Requirements for

Bibliographic Records

Work

Expression

User

tasks

Manifestation

Item

Content attributes

Carrier attributes

AACR3

Item

JSC, 2005


Rda and the semantic web

Semantic Web (Berners-Lee)

Structured

collections

of information

Sets of inference rules

Automated reasoning

Web of linked data

Web of linked documents

Web of linked computing devices


Rda and the semantic web

Resource Description Framework (RDF)

“This work has author Gordon Dunsire”

Triple!

Subject – Predicate - Object

ex:1Bd38

?

Subject

“This work”

Predicate

“has author”

?

ex:ZX3G5

Object

“Gordon Dunsire”

?

“literal”

Uniform Resource Identifier (URI)

For machines

For humans


Rda and the semantic web

ex:“is derivative work of”

ex:“has derivative work”

ex:“hastitle”

“RDA and the Semantic Web”

ex:“has author”

One giant global graph

“Gordon Dunsire”

ex:“hasname”

ex:

“This work”

ex:

“That work”

ex:

Scotland

ex:“is author of”

ex:

Gordon Dunsire

ex:

“This work”

“G. J. Dunsire”

ex:“has author”

ex:“hasalternate name”

ex:“has

country of birth”


Rda and the semantic web

Data vs Ontology

Data triple

URI

ex:

Gordon Dunsire

ex:

“This work”

ex:

hasAuthor

ex:“has author”

ex:“haslabel”

Ontology

triple

ex:“hastype”

“has author”

“Property”


Rda and the semantic web

RDA vocabulary example

“notated music”@en

ex:“haslabel”

“schriftlichfixierteMusik”@de

ex:“haslabel”

rdact:

1010

rdact:

1016

ex:

“is related to”

ex:“haslabel”

“tactile notated music”@en


Rda and the semantic web

Inference rules: sub-property

ex:“haslabel”

“has author”@en

ex:“has author”

ex:“hascreator”

ex:

“is sub-

property

of”

“has creator”@en

ex:

“This work”

ex:

“This work”

ex:

Property1

ex:

Property2

ex:“haslabel”

“Gordon Dunsire”

“Gordon Dunsire”


Rda and the semantic web

rdfs:label

rdfs:comment

RDF vocabularies: DCT + RDFS

Dublin Core Terms + RDF Schema

rdfs:range

rdfs:label

“Creator”

“Agent”

dcterms:

creator

dcterms:

Agent

“A resource that acts or has the power to act.”

Source of URIs


Rda and the semantic web

Inference rules: range

rdfs:range

ex:

Gordon Dunsire

ex:

Gordon Dunsire

ex:

“This work”

dcterms:

creator

dcterms:

agent

dcterms:

Agent

rdfs:type

dcterms:creator


Rda and the semantic web

Data model meeting

Panizzi

British Library, London, 30 April – 1 May 2007

Members of RDA and Semantic Web communities

“… agreed that RDA and DCMI should work together …”

(Dublin Core Metadata Initiative)


Benefits expected

Benefits expected

  • The library community gets a metadata standard that is compatible with the Web Architecture and that is fully interoperable with other Semantic Web initiatives

  • The DCMI community gets a libraries application profile firmly based on the DCAM and FRBR (which will be a high profile exemplar for others to follow)

  • The Semantic Web community get a significant pool of well thought-out metadata terms to re-use

  • There is wider uptake of RDA


Activities

Activities

  • 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


Rda and the semantic web

Opaque URI

(only for machines)

Compact URI = rdact:1010


Rda and the semantic web


Rda and the semantic web

DCAM and RDA

Dublin Core Abstract Model

rdae:

“has content

type”

<indecs>

skos:inScheme

rdfs:label

Basic RDA metadata structures

ex:

ExpressionURI

rdact:

1010

“notated music”@en

rdaterms:

RDAContentType


Rda and the semantic web

High-level metadata structures

Unconstrained

rdfs:

“domain”

Constrained by FRBR (domain)

sP

rdfs:

“domain”

rdam:

“has title”

rdau:

“has title”

rdam:

“has title proper”

rdau:

“has title proper”

rdac:

“Manifestation”

sP

sP

sP = rdfs:”sub-property of”


Rda and the semantic web

Relationship designators

sP

rdaw:

“has creator”

rdau:

“has creator”

rdau:

“has designer”

rdaw:

“has designer”

rdac:

“Work”

rdac:

“Agent”

rdfs:

“domain”

sP

rdfs:

“range”

sP

sP = rdfs:”sub-property of”


Rda and the semantic web

Link-ability

Domains

Relationships

Attributes

Triple chains

Triple clusters

Literals

Covering all media


Rda and the semantic web

Rich detail

rdaw:

“is video screenplay (work)”

rdaw:

“is screenplay (work)”

rdaw:

“has related work”

rdaw:

“has accompanying work relationship with”

rdaw:

“is complemented by (work)”

sub-property ladder


Rda and the semantic web

Interoperability

???

rdau:

“has voice actor”

rdaw:

“has creator”

rdau:

“has actor”

dcterms:

“creator”

dc:

“creator”

rdau:

“has performer”

rdau:

“has creator”


To do

To do

  • 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 aggregated statements (RDA, ISBD, MARC, …)

    • E.g. Place of publication -> Publication statement


Achievements 5 years on

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 the Web Architecture and that is fully interoperable with other Semantic Web initiatives”

  • “a significant pool of well thought-out metadata terms to re-use”

  • Wider uptake of RDA? …


Thank you

Thank you!

  • gordon@gordondunsire.com


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