Download Linked Data, Linked Open Data

BBY 464 Semantic Information Management
(Spring 2016)
Linked Data,
Linked Open Data
Yaşar Tonta & Orçun Madran
[yasartonta, orcunmadran]@gmail.com
Hacettepe University
Department of Information Management
Semantic Web
From Syntactic to Semantic
Interoperability
From Databases to Data Spaces
• Database -> structured
• Data space -> not so structured
– Its primary function is to simplify integration of
heterogeneous data
– e.g., semi-structured data such as XML documents and
text files
– They will be accessible via the same interface as
structured data organized into tables or key/value pairs
– Secondary function of a data space is to simplify data
integration by providing data mapping and semantic
integration facilities for hosted data collections and
external data resources such as relational databases or
files
Source: http://www.streamscape.com/Technology/dataspaces.html
• Database
– Can be queried with SQL (Structured Query
Language)
• Data space
– NoSQL (Not only SQL) databases that specialize in
semi-structured data
Linked Data
Wikipedia: Cahit Arf
Wikipedia info on Cahit Arf that comes
from Linked Data
Cahit Arf in Turkish Vikipedi and Linked
Data
Wikipedia: Akasya Durağı
Vikipedi: Akasya Durağı
DBpedia
Dbpedia Statistics
Source: Christian Bizer, Jens Lehmann, Georgi Kobilarov, Sören Auer, Christian Becker, Richard Cyganiak, Sebastian Hellmann:
DBpedia – A Crystallization Point for the Web of Data. Journal of Web Semantics: Science, Services and Agents on the World Wide Web,
Issue 7, Pages 154–165, 2009.
DBpedia in Turkish
Dbpedia Turkish mapping stats
Dbpedia Information Box
DBPedia: Akasya Durağı
Demo: RelFinder
http://www.visualdataweb.org/relfind
er/relfinder.php
Linked Data
Tim Berners Lee’s talk (5’33’’)
• The year open data went worldwide
• http://www.ted.com/talks/tim_berners_lee_t
he_year_open_data_went_worldwide
Why is Linked Data important for libraries?
• Library resources can be
discovered more easily
• More innovative apps
based on library metadata
can be developed
• Offers effective cataloging
and innovative
opportunities
Source: http://lodlam.net/2012/08/09/linked-data-for-libraries-video-from-oclc/
Library of Congress Linked Data Service
LC’s Linked Data Service Data Sets
VIAF.org
VIAF.org: Orhan Pamuk
Preferred Main Entries for Orhan Pamuk:
Is Turkish National Library here?!