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Linked Open
Data
and
Scientific
knowledge
management
systems
Gregor Hagedorn,
Museum für Naturkunde
Berlin© U.Kils, CC BY-SA 3.0; from Wikimedia Commons
1. Scientist
reads in the
Web browser
2. Data-
federation
/-indexing
Links are not
yet operational
GBIF Datenfederation
Data from
Thailand?
Fungal
Cultures
CBS
Herbarium
München
Insect
Collection
MfN
Bird data
Germany
after Dave Remsen, GBIF, TDWG 2011
Bird data
Austria
Insect
Collection
NHM, UK
© i4Life
Some linking (R. Page)
Linking is usually
DB-internal = local
This is inefficient.
- Stable Links
- Return data
Identifiers
Specimen
Collection
Datenbase
Botanical
Nomenclatural
Database
Classical Identifiers
Specimen
Collection
Datenbase
Taxon = urn:uuid:
6e8bc430-9c3a-
11d9-9669-
0800200c9a66
Botanical
Nomenclatural
Database
Taxon = urn:uuid:
6e8bc430-9c3a-
11d9-9669-
0800200c9a66
Classical Identifiers
Specimen
Collection
Datenbase
Taxon = urn:uuid:
6e8bc430-9c3a-
11d9-9669-
0800200c9a66
Botanical
Nomenclatural
Database
Taxon = urn:uuid:
6e8bc430-9c3a-
11d9-9669-
0800200c9a66
Classical IdentifiersIf
this
found:
And
this
found:
Then
relation
detected:
Specimen
Collection
Datenbase
Taxon = http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Botanical
Nomenclatural
Database
@ http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Semantic Web
Specimen
Collection
Datenbase
Taxon = http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Botanical
Nomenclatural
Database
@ http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Semantic WebIf
this
found:
Then
relation
derefenced
Specimen
Collection
Datenbase
Taxon = http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Botanical
Nomenclatural
Database
@ http://
id.pesi.org/tax/6
e8bc430-9c3a-
11d9-9669-
0800200c9a66
Semantic Web
Micro-
citation
of data!
Semantic Web
B C
Thing
A D E
= typed links (properties)
Thing
Thing
Thing
Thing
Thing Thing
Thing
Thing
Thing
Linked Open Data Cloud (LOD 2011)
Linked Open Data Cloud (LOD 2011)
Why Linked Open Data?
– Distributed Web Model
• using W3C standards (xml, rdf, owl)
• Machine usable data (automatic analysis & reasoning)
• Web pages at same identifier (content negotiation)
Why Linked Open Data?
– Distributed Web Model
• using W3C standards (xml, rdf, owl)
• Machine usable data (automatic analysis & reasoning)
• Web pages at same identifier (content negotiation)
– Anyone can say anything about anything, anywhere
• Usages that the data providers never anticipated
• Third parties connect concepts between data sets
• Particular needs contribute to global achievement
Why Linked Open Data?
– Distributed Web Model
• using W3C standards (xml, rdf, owl)
• Machine usable data (automatic analysis & reasoning)
• Web pages at same identifier (content negotiation)
– Anyone can say anything about anything, anywhere
• Usages that the data providers never anticipated
• Third parties connect concepts between data sets
• Particular needs contribute to global achievement
– Flexible to adapt to almost any form of data
– Information managed at source plus annotated globally
Why Linked Open Data?
– Distributed Web Model
• using W3C standards (xml, rdf, owl)
• Machine usable data (automatic analysis & reasoning)
• Web pages at same identifier (content negotiation)
– Anyone can say anything about anything, anywhere
• Usages that the data providers never anticipated
• Third parties connect concepts between data sets
• Particular needs contribute to global achievement
– Flexible to adapt to almost any form of data
– Information managed at source plus annotated globally
– Queries and other analysis can combine arbitrary sets of
data, anywhere and owned by anyone
– Common and diverse vocabularies can be used together
and related to each other (creativity, science!)
Strategy:
1. Stable Identifiers Now
(Semantic Web compatible,
http-dereferenceable)
2. Semantic Web Later ...
Identifier patterns?
–http://objects. myorg.edu/id/1C4EDC178
AD79DD7F1A5AB856E8C5BCA#treatment
or
–http://concepts.myorg.edu/id/123#treatment
or
–http://id.plazi.org/specimen/123#label
Stability is a
management
decision!
Scientific
knowledge
management
systems?
Discoverable
Distributed
Dissent &
Discourse
Fine-granular
knowledge
curation?
LOD is not
solution to all.
Infrastructure to build on top of it
Collaboration
must become
more efficient

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pro-iBiosphere 2013-05 Linked Open Data (Gregor Hagedorn)