Libraries and Linked open Data

Linked open data for science, culture and
society
Presentation at the National Library of China, Beijing, 2012-09-16

Dr. Johannes Keizer
Office of Knowledge Exchange, Research and Extension
Food and Agriculture Organization of the UN

Presentations by Johannes Keizer is licensed under a Creative Commons Attribution-
NonCommercial-ShareAlike 3.0 Unported License.

“... FAO’sprinciple task is to
work to ensure that the
world’s knowledge of food
and agriculture is available
to those who need it when
they need it and in a form
which they can access and
use ...”

http://aims.fao.org johannes keizer

http://agris.fao.org

AGRIS is a global public
domain Database
with 2870782 structured
bibliographical records on
agricultural science and
technology. 78.95% of
records are citations from
scientific journals. The
bibliographic references
contain either links to the
full text of the publication
or additional information
retrieved from related
Internet resources

Tim Berners Lee at TED 2009 on Linked Data

 All kinds of conceptual things, they have names now
that start with HTTP.
 I get important information back. I will get back some
data in a standard format which is kind of useful data
that somebody might like to know about that
thing, about that event.
 I get back that information it's not just got somebody's
height and weight and when they were born, it's got
relationships. And when it has
relationships, whenever it expresses a relationship
then the other thing that it's related to is given one of
those names that starts with HTTP.


A big cloud! But how much linked?
“Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”


Do libraries
have a
specific role?

..yes, very much
 We have tons of structured and semi -
structured information in bibliographical
databases
 Many of these bibliographical records are
using some standard vocabularies, i.e.
• AGROVOC: 300 to 1000 data sets all over the world
• CABI: at least 100?
• NALT: some 100s in the USA
• LCSH: enormous numbers of bib. Databases

 One vocabulary catches multiple datasets


……a bibliographical record original


…the same record transformed


……using title and author


……using the key words


…using the journal name


http://agris.fao.org/openagris/search.do?recordID=PL2009000495


Linking URIs


Linking vocabularies


RDF- the basis for linked data


http://www.bbc.co.uk/nature/life/Orthoptera

22

http://www.bbc.co.uk/nature/life/Orthoptera.rdf

23

The BBC Grasshopper page links to a news article…

24

http://news.bbc.co.uk/earth/hi/earth_news/newsid_8172000/817216
8.stm

25

…and to a DBPedia category…

26

http://dbpedia.org/page/Orthoptera

27

…using information extracted from Wikipedia.

28

EUROPEANA:http://www.europeana.eu/portal/

UDC-2011, The Hague

Linked Open Vocabularies


Creating Linked Applications


..when you have time....
 http://agris.fao.org/
 http://aims.fao.org/openagris
 http://aims.fao.org/agrovoc/lod
 http://aims.fao.org/standards/lode-bd
 [rural population]
http://agris.fao.org/openagris/search.do?recordID=FR2001001041
 [cereal yield]
http://agris.fao.org/openagris/search.do?recordID=QM2008000025
 [Poverty]
http://agris.fao.org/openagris/search.do?recordID=BY2006000350
 [Fish WB + FAO fisheries]
http://agris.fao.org/openagris/search.do?recordID=PL2009000495
 [Fish WB + FAO fisheries]
http://agris.fao.org/openagris/search.do?recordID=JP2010001379
 [GBIF, Country Profiles, DBPedia]

Libraries and Linked open Data

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