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Initiatives to make standard library metadata models and structures available to the Semantic Web

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Initiatives to make standard library metadata models and structures available to the Semantic Web. Gordon Dunsire, UK. g.dunsire_at_strath.ac.uk. Mirna Willer, HR – PowerPoint PPT presentation

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Title: Initiatives to make standard library metadata models and structures available to the Semantic Web


1
Initiatives to make standard library metadata
models and structures available to the Semantic
Web
  • Gordon Dunsire, UK
  • g.dunsire_at_strath.ac.uk
  • Mirna Willer, HR
  • mwiller_at_unizd.hr

Presented at WLIC Session 149, Sun 15 Aug 2010,
Gothenburg, Sweden
2
Overview
  • I Initiatives IFLA initiatives (FRBR, ISBD,
    etc.) and the relation to external initiatives
    (RDA, linked-data vocabularies like VIAF, LCSH,
    etc.).
  • II Shift of focus Potential use of these
    initiatives to support the Semantic Web (parsing
    existing legacy records to create huge quantities
    of high-quality instance triples, the power of
    inferencing to create new triples, etc.), and the
    shift of cataloguing focus from record to
    statement (triple).

3
IFLA initiatives Background
  • IFLAs initiatives to make standard library
    metadata models, structures, and vocabularies
    developed by IFLA available to the Semantic Web,
    initially stimulated by external projects
  • RDA resource description and access
  • Data models meeting (London) with Dublin Core
    Metadata Initiative (DCMI), IEEE Learning Object
    Metadata (IEEE LOM), W3C Simple Knowledge
    Organization System (SKOS)

4
IFLA initiatives Standards, models
  • Functional Requirements family or FRBR family
    of models
  • FRBR, 1998 Bibliographic Records data
  • FRAD, 2009 Authority Data
  • FRSAD, 2010 Subject Authority Data
  • Preliminary work the FRBR Namespace Project used
    the testing area of the National Science Digital
    Library Metadata Registry (NSDL)
  • Now the Open Metadata Registry
  • ISBD XML in the RDF/XML environment

5
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6
IFLA initiatives Infrastructure
  • 2009-2010 the IFLA Namespaces project is
    developing an administrative and technical
    infrastructure to support such initiatives and
    encourage uptake of standards by other agencies.
  • Basic namespace iflastandards.info
  • FRBR http//iflastandards.info/ns/fr/frbr/frbrer
    / as the basis of the uniform resource
    identifiers (URIs) of each RDF class and property
    entity relationship in the FRBR model
  • /frbrer/ to distinguish from FRBRoo CIDOC CRM
  • FRAD http//iflastandards.info/ns/fr/frad/

7
IFLA initiatives FR family
  • Representation of FRBRer model element set is
    mainly complete
  • FRAD and FRSAD close behind
  • Representation in Resource Description Framework
    (RDF) is informing work on combining and
    consolidating the model family
  • Also supplies learning curve for Semantic Web
    environment

8
IFLA initiatives ISBD RDF/XML
  • FRBR is a conceptual model built on the E-R
    methodology which is intrinsically applicable to
    representation in RDF, while ISBD is a data
    standard
  • Design of the RDF representation of ISBD
    involves
  • the treatment of aggregated statements in a
    defined number of elements within the areas
  • the treatment of mandatory and optional elements
    and areas
  • the order of areas and elements within an area
  • the repeatability of areas and elements
  • the treatment of punctuation and its double
    function.

9
Related standards RDA
  • DCMI RDA Task Group has three goals
  • define RDA modelling entities as an RDF
    vocabulary of properties and classes
  • identify in-line value vocabularies as candidates
    for publication in RDFS or SKOS nearly
    completed
  • develop a Dublin Core Application Profile for RDA
    based on FRBR and FRAD.
  • Task Group is using the Open Metadata Registry to
    develop RDF representations of the RDA
    vocabularies

10
Related standards Other
  • The National Library of Sweden has developed a
    methodology for representing MARC21 records in
    RDF and implemented it for LIBRIS, the Swedish
    Union Catalogue
  • The Vocabulary Mapping Framework (VMF) project
    funded by UK Joint Information Systems Committee
    (JISC)
  • to develop a major expansion of the RDA/ONIX
    framework for resource categorization
  • to create a tool to support the automated mapping
    of vocabularies from metadata standards of use to
    the JISC community, which includes research,
    teaching, and learning environments
  • CIDOC CRM, FRAD, FRBR, MARC21 and RDA
    vocabularies included ISBD and UNIMARC
    represented

11
Related standards Vocabularies
  • Instance values from terminologies (subject
    headings, classification captions and indexes,
    and thesauri) can be represented in RDF using
    SKOS
  • Library of Congress Subject Headings (LCSH)
  • Faceted Application of Subject Terminology
    (FAST), Medical Subject Headings (MESH), Form and
    genre headings for fiction and drama, and
    Thesaurus for Graphic Materials (TGM)
  • French RAMEAU subject headings
  • DDC Summaries
  • Linked data set of best practices for
    publishing and connecting structured data on the
    Web

12
Linked data initiatives
  • UDC Consortium published a selection of around
    2,000 UDC classes in 16 languages online as the
    UDC summary (RDF version in development)
  • Virtual International Authority File (VIAF) a
    set of linked controlled vocabularies (authority
    records of personal names) by national
    bibliographic agencies
  • ISBD prescribes vocabulary control for the data
    in the Area 0 for content form and media type.
    Terms for the elements (content form, content
    qualification, and media type) are taken from
    closed lists

13
Linked data from catalogue records
  • Most linked data initiatives involve vocabularies
  • Linked data can also represent bibliographic
    descriptions
  • Huge quantities of high quality bibliographic
    metadata are locked in catalogue records
  • UNIMARC, MARC21, EAD, etc.
  • Use RDF models to parse the records into linked
    data

14
Disaggregating the metadata record into single
statements
Record
Record ID
1234
Author
Mirna Willer
Title
UNIMARC format for authority records
Date
2004
Statements
has Author
Mirna Willer
1234
has Title
UNIMARC format for authority records
1234
has Date
2004
1234
15
Representing a single statement as an RDF triple
Statement
has Title
UNIMARC format for authority records
1234
subject URI
1234
http//natlibx/
property URI
http//.../???
object literal
UNIMARC format for authority records
Triple
lthttp//.../???gt
UNIMARC ...
lthttp//natlibx/1234gt
some???
UNIMARC ...
natlibx1234
16
Property URIs
has Title http//.../???
ISBDhas Title Proper
http//iflastandards.info/ns/isbd/elements/1004
FRBRhas Title of the Manifestation
http//iflastandards.info/ns/fr/frbr/frbrer/3020
FRBRhas Title of the Expression
http//iflastandards.info/ns/fr/frbr/frbrer/3008
FRBRhas Title of the Work
http//iflastandards.info/ns/fr/frbr/frbrer/3001
17
Inferring new triples from existing triples
An RDF property can have a domain (the type of
thing the property is applied to) and a range
(the type of thing that can be a value of the
property)
Example FRBR property is created by (person)
(frbrer2009) has domain Work (frbrer1001) and
range Person (frbrer1005)
Therefore natliby456 is a Work, and
viaf21647077 is a Person
18
Linking triples
has Author
Mirna Willer
1234
Statement
object URI
viaf29776655
some123
viaf29776655
natlibx1234
Triple
is Author of
natliby456
viaf29776655
Another
frbrer2009
viaf21647077
natliby456
and
foafname
Dunsire, Gordon
viaf21647077
and
Q Who is a co-author with Mirna Willer?
A Dunsire, Gordon
Q Are they persons?
A Yes
Q Really? A VIAF natliby say so!
19
Metadata focus
Shift of focus of metadata creation, maintenance,
storage, preservation (by professionals,
amateurs, machines)
From Record
To Statement(s) triple(s)
But metadata display ...
... aggregates triples (from multiple sources) to
create records on the fly
20
Thank you
  • mwiller_at_unizd.hr
  • gordon_at_gordondunsire.com
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