RDA: future scenarios

Lars G. Svensson; Gordon Dunsire

Overview

• Context• Linked data and the Semantic Web• RDA triples• Role of FRBR• Navigating the data• What’s in it for whom?

Context

• RDA test executive summary:– Announce completion of the Registered RDA Element

Sets and Vocabularies. Ensure the registry is well described and in synchronization with RDA rules.

• Business case: ... enables the descriptive metadata created to be used in a linked data world

– Demonstrate credible progress towards a replacement for MARC.

• LoC Bibliographic Framework Transition Initiative– Experiment with Semantic Web and linked data

technologies

Linked data world

• Not a new world for bibliographic metadata– Modern library systems link descriptive metadata to

authority headings for resource discovery• RDA database scenario 2

• Semantic Web offers opportunities to go global– World-Wide, international scale of the machine-

processing infrastructure of the Web• Resource Description Framework (RDF)

– Interoperable, simple, atomic metadata statements in the form of “triples”

What does an RDA triple look like?

The specified expression

has content type

tactile notated music

ex:123 rda1:contentTypeExpression rdact:1016 .

taktile Musik

content type“taktile Musik”

“tactile notated music”

preferred label (de)

preferred label (en)

Linked data!

Where is FRBR?

content type

ex:123

rdact:1016

E.g. “content type” specified to have domain (first part of triple) of frbrer:C1002 (Expression)

frbrer:C1002is-a“Expresión”

label (sp)

We can register properties like “content type” to say that the first and/or last parts of a triple

are specific instances of a particular class

“Work”

label (en)

frbrer:C1003realization of

ex:345is-a

To watch a large graph of linked data can be somewhat intimidating

PND

DNB-

Exemplare

DNB-Titel

GKD/

Labels

Wikipedia

SWD

LCSH

VIAF

ISBN

ISSN

ISMN

Verbund-

Exemplare

ZDB-Titel

Verbund-

Titel

WorldCat-

Titel

RAMEAU

urn:nbn:de

MVB

PhononetDDC

(deutsch)

Is the best way an application-specific view?

Title How to protect yourself against DengueTouristikmedizin

Author

Subject

?

?

?

Is the best way an application-specific view?

Title How to protect yourself against Dengue

Author Watson,

SubjectWatson, AndersWatson, BelindaWatson, ImmanuelWatson, John H. (Literarische Gestalt) Watson, KarenWatson, NicolasWatson, XanthippaWatson, Yngve

?

?

?

Is the best way an application-specific view?

Title How to protect yourself against Dengue

Author Watson, John H. (Literarische Gestalt)

Subject Travel m

Travel medicineTravel medievalTouristikmedizin (GND)

?

?

?

Or should it be like moving a lense over the graph?

Or should it be like moving a lense over the graph?

Der Steppenwolf,

München 2006

Der Steppenwolf,

German

Der Steppenwolf

Or should it be like moving a lense over the graph?

Der Steppen-

Wolf

Hermann Hesse

Zürich

Or should it be like moving a lense over the graph?

Zürich

Schweiz

Europa

Baedecker Schweiz

Should the user really need to care?

Enter your search terms here Go!

Classic search interface:

Enter your search terms here Go!

Semantic search interface:

So who benefits from all this?

Is all this semantic web stuff of any use

to me as a library patron?

http:

//fa

rm3.

stati

c.fli

ckr.c

om/2

123/

2195

2402

37_1

f1c7

fd67

1_b.

jpg

Other institutions benefit, since they can re-use library data

Libraries benefit, because we don‘t need to curate all the data ourselves

Phot

o by

kar

lnor

ling

(CC-

BY):

http:

//w

ww

.flic

kr.c

om/p

hoto

s/ka

rlnor

ling/

4206

7275

80/s

izes

/m/i

n/ph

otos

trea

m/

Phot

o by

J. S

teph

en C

onn

(CC-

BY-N

C): h

ttp:

//w

ww

.flic

kr.c

om/p

hoto

s/js

teph

enco

nn/4

2243

2288

4/si

zes/

m/i

n/ph

otos

trea

m/

Gnd:123456-7

“Paris“@fr

Geonames:98765-4

lat

long

By involving trusted communities, we can maintain high data quality

Open Knowledge NetworksData generation: registered users and communities, automated algorithmsQuality control: self-control (see Wikipedia)

Open Knowledge NetworksData generation: registered users and communities, automated algorithmsQuality control: self-control (see Wikipedia)

Sphere

Controlled Quality Data generation: high quality algorithmsQuality control: training and improvement of algorithms

Controlled Quality Data generation: high quality algorithmsQuality control: training and improvement of algorithms

Mantle

Guaranteed QualityData generation an correction: libraries, universities, museums, expert panels, etc. Quality control: strict rules, panelsHighest stability (persistency)

Guaranteed QualityData generation an correction: libraries, universities, museums, expert panels, etc. Quality control: strict rules, panelsHighest stability (persistency)

Core

Thank you

• gordon@gordondunsire.com• l.svensson@dnb.de • RDA in Open Metadata Registry

– http://metadataregistry.org/rdabrowse.htm