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Andre Valdestilhas, Natanael Arndt and Dimitris Kontokostas
AKSW
1
Topics
1. Problem statement
2. Contributions and representation of the idea
3. Results
4. Related work
5. Conclusion and Future works
2
Problem statement
Heterogeneity
3
4
Redirect
Identifier
owl:sameAs
5
● 10,35 % (transitive/redirect).
Contributions and
Representation of the idea
6
1. Reduction of the identifier heterogeneity
problem.
2. A GUI where the user is able to evaluate the
links, also suggesting a new link to be rated.
7
8
http://rdf.freebase.com/ns/m.015fr
http://dbpedia.org/resource/Bresil
http://dbpedia.org/resource/Brzil
http://dbpedia.org/resource/Brazil
http://dbpedia/resource/...
http://dbpedia.org/resource/Brazil
URI
Transitive/Redirect
Links DUI
Service on the web
curl http://service...
DBpedia
Link
Repository
DBpedia
SameAs
Service
DBpedia
Link Rate
Uses
Redirect
Feedback
Relation of the contribution
9
DBpedia EndPoint
10
freebase
PURL.org
bbc.co.uk
Methodology and Workflow
11
12
Download triple
files
DataBase
Importing
Service on the web
implementation
GUI and Link Rate
implementation
Freebase
PURL.org
bbc.co.uk
...
Redirect / transitive
Links
Link Rate
suggestions
curl http://service...
13
14
Results
15
Transitive / Redirect Links
16
Usability
17
The results of all 10 questions gives us a score of 32.71 (at a scale of 0 − 40) which is a SUS score of
32.71 × 2.5 ≈ 82. This indicates a high level of usability.
Sum(values): 24,27,30,39,38,35,36
Total interviewed: 7
Average: 32.71429
Standard deviation: 5.76525
Variance(Standard deviation): 33.2381
(SUS) http://www.measuringu.com/sus.php, [M. Saleem et. al]
18
Related works
SameAs.org
19
Link rate and Quality
● User-driven quality evaluation of dbpedia. [A. Zaveri et al]
○ Data quality assessment methodology in DBpedia.
○ Manual and semi-automatic process.
● Interlinking: Performance assessment of user evaluation
vs. supervised learning approaches. [M. Hassan et al]
○ Validation of links and a dubbed manual validation.
○ An experiment to investigate the effect of user intervention in dataset
interlinking on small knowledge bases.
20
21
Conclusion and Future works
Overall - Summary of the whole work
> Basically 3 steps:
22
Import Normalize Rate
Treatment of
transitive and
redirect links
Several results
to an unique
DBpedia
identifier
Quality and statistics for
the links
Future works
● A study about the results of link rating.
○ Is needed to wait for a period of usage of the
DBpediaSameAs and then the results can be used
for a new work.
23
Information
1. DBpediaSameAs “live”:
http://dbpsa.aksw.org/SameAsService/
2. The code is available at: https://github.
com/firmao/DBPediaLinkSameAs.git
3. Usability questions:
http://goo.gl/forms/JKeQysx2az
24
Special thanks
Sebastian Hellmann, Markus Ackerman, Ivan
Ermilov, Diego Esteves, Diego Mousallen,
Sandro Rautenberg, Saleen, Anrapali,
Johannes, Sheriff, Edgard Marx, Ciro Baron
Neto.
25
26
Thanks :)

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DBpediaSameAs