Presentation Elpub 2013

Making sense of a flat list of
terms into Linked Open Data
SKOS vocabularies
Helder FIRMINOa and Ana Alice BAPTISTAb
ae-mail:pg19785@alunos.uminho.pt
be-mail: analice@dsi.uminho.pt
University of Minho, Guimarães, Portugal

Summary
Contextualisation
Problem
Objectives
Methodology
Results
References
June 13, 2013 2

Contextualisation
This project aims to organize and publish all
terms of the website of the Portuguese
Communications Authority – ANACOM, into a
linked open data perspective.
We selected a W3C recommendation, SKOS,
that allows concepts to be composed and
published on the World Wide Web, linked with
data on the Web and integrated into other
concept schemes(4).
June 13, 2013 3

Problem (1/2)
ANACOM has all its
Web Site resources
described using
Dublin Core (DC),
encoded in HTML,
which corresponds to
the level one of
interoperability for DC
metadata and in level
3 of the Tim Berners-
Lee’ five star scheme.
[Source: http://dublincore.org/documents/interoperability-levels/]
[Source: http://www.w3.org/DesignIssues/LinkedData.html]
June 13, 2013 4

Problem (1/2)
Tag Catalogue (HTML format)
[Source: ANACOM’s website]
June 13, 2013 5

Objectives
Analyse and organize the terms being used to
describe resources at ANACOM's website;
Relate the resulting controlled vocabularies
with other existing vocabularies;
Encode the resulting controlled vocabularies in
SKOS in, at least, two languages, and under a
five star LOD perspective.
June 13, 2013 6

Methodology
We adopted a hybrid approach, combining the
best features of each methodology. Specifically
with regard to the construction of vocabularies,
we will combine Ontology Development 101(6)
and the methodology proposed by the
European Programme ISA(7), one of the most
recent outputs in this area.
June 13, 2013 7

Results (1/7)
Protege http://protege.stanford.edu
June 13, 2013 8
DC Annotations

Results (2/7)
http://protege.stanford.edu
June 13, 2013 9
Class hierarchy

Results (3/7)
OWLViz - Class Hierarchy
June 13, 2013 10

Results (4/7)
Annotation
properties, we
highlighted the
SKOS constructs
such as prefLabel,
altLabel, narrower,
broader and others.
June 13, 2013 11

Results (5/7)
June 13, 2013 12
Individuals (terms)

Results (6/7)
OntoGraf view of term (EUA), with Labels in 2 languages, portuguese
and english.
June 13, 2013 13

Results (7/7)
OntoGraf view of entitie EuropeanCountry and individuals
June 13, 2013 14

References
1. Lévy P. Cibercultura. São Paulo: Editora 34. 1999.
2. Berners-Lee T. Linked Data - Design Issues [Internet].2009 [cited 2013
Jan 21]. Available from:
http://www.w3.org/DesignIssues/LinkedData.html
3. W3C. Semantic Web [Internet]; 2013 [cited 2013 Jan 21]. Available
from: http://www.w3.org/standards/semanticweb/
4. Isaac, A., & Summers, E. SKOS Simple Knowledge Organization
System Primer. 2012. Retrieved November 5, 2012, from
http://www.w3.org/TR/2009/NOTE-skos-primer-20090818/
5. Nilsson M, Baker T, Johnston P. Interoperability Levels for Dublin Core
Metadata [Internet]. 2009 [cited 2010 Jun 9]. Available from:
http://dublincore.org/documents/interoperability-levels/
6. Noy N, McGuinness D. Ontology development 101:A Guide to Creating
Your First Ontology. Stanford University; 2001 [cited 2012 Sep 20].
Available from:
http://www.ksl.stanford.edu/people/dlm/papers/ontology101/ontology101
-noy-mcguinness.html
7. PwC EU Services EESV. Process and Methodology for Core
Vocabularies (p. 59). Brussels: European Commission. 2012. Retrieved
from http://joinup.ec.europa.eu/sites/default/files/D3.1-
Process%20and%20Methodology%20for%20Core%20Vocabularies_v1.
June 13, 2013 15

Tack!
Thank you!
Obrigado!
June 13, 2013 16

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