Dublin Core and Linked Data

Dublin Core and Linked Data
Tom Baker, DCMI
Tokyo, 8 December 2010
© 2009 DCMI
Tutorial: Dublin Core - Building blocks for interoperability
1
RDF: Expressing Data in Sentences!
relatedTo
ResourceA
Resource
ResourceB
describedBy
ResourceA
Resource
Some text
2
Source A: About a book by Barack Obama
Each triple in the data corresponds to a link in a
conceptual graph.
“Dreams from My Father”
dct:title
http://...2773
dct:date
2004
dct:creator
“Barack Obama”
_:placeholder
foaf:name
Each bit of information about the book is expressed
in the data as a triple – a three-part “statement”.
http://../isbn/978-14000082773 dct:title
“Dreams from My Father”
http://../isbn/978-14000082773 x:published
“2004”
http://../isbn/978-14000082773 dct:creator
_:placeholder
_:placeholder
“Barack Obama”
foaf:name
Source B: About the French translation
x:isTranslationOf
http://...2773
http://...5979
dct:title
“Les rêves de mon père”
X:translator
“Danièle Darneau”
_:placeholder
foaf:name
http://../isbn/978-2258075979
http://../isbn/978-2258075979
x:isTranslationOf
dct:title
http://.../isbn/978-14000082773
“Les rêves de mon père”
http://../isbn/978-2258075979 x:translator _:placeholder
_:placeholder
foaf:name “Danièle Darneau”
Merge the two data sources
into one set of triples
http://../isbn/978-2258075979
http://../isbn/978-2258075979
x:isTranslationOf
dct:title
http://.../isbn/978-14000082773
“Les rêves de mon père”
http://../isbn/978-2258075979 x:translator _:placeholder
_:placeholder
foaf:name “Danièle Darneau”
http://../isbn/978-14000082773 dct:title
“Dreams from My Father”
http://../isbn/978-14000082773 x:published
“2004”
http://../isbn/978-14000082773 dct:creator
_:placeholder
_:placeholder
“Barack Obama”
foaf:name
Software detects matching URLs…
http://../isbn/978-2258075979
http://../isbn/978-2258075979
x:isTranslationOf
dct:title
http://.../isbn/978-14000082773
“Les rêves de mon père”
http://../isbn/978-2258075979 x:translator _:placeholder
_:placeholder
foaf:name “Danièle Darneau”
http://../isbn/978-14000082773 dct:title
“Dreams from My Father”
http://../isbn/978-14000082773 x:published
“2004”
http://../isbn/978-14000082773 dct:creator
_:placeholder
_:placeholder
“Barack Obama”
foaf:name
Software detects matching URLs…
“Dreams from My Father”
dct:title
http://...2773
dct:date
2004
dct:creator
“Barack Obama”
_:placeholder
foaf:name
x:isTranslationOf
http://...2773
http://...5979
dct:title
“Les rêves de mon père”
X:translator
“Danièle Darneau”
_:placeholder
foaf:name
…and merges the data
“Dreams from My Father”
dct:title
http://...2773
dct:date
2004
dct:creator
x:isTranslationOf
“Barack Obama”
_:placeholder
foaf:name
http://...5979
dct:title
“Les rêves de mon père”
X:translator
“Danièle Darneau”
_:placeholder
foaf:name
Example: BBC Wildlife Finder
Humboldt Squid page, pulled together from a
diversity of Linked Data sources
BBC TV Documentary
BBC News item
Wikipedia
Animal Diversity Web:
Nocturnal way of life
“Under the hood” of the Squid page
BBC News item
Humboldt Squid (species)
BBC TV documentary
© 2010 DCMI
Joint NISO/DCMI Webinar
Dublin Core: The Road from Metadata Formats to Linked Data
11
Dublin Core provides basic metadata elements
© 2010 DCMI
Joint NISO/DCMI Webinar
Dublin Core: The Road from Metadata Formats to Linked Data
12
…together with elements from other standards
© 2010 DCMI
Joint NISO/DCMI Webinar
Dublin Core: The Road from Metadata Formats to Linked Data
13
Using metadata to merge information
from many sources
Humboldt Squid
has “way of life”
“Nocturnal”