Presented at INSPIRE Conference 2013 in Florence taking place in the NASA Worldwind Challenge 2013 Workshop.

1. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Europa Linked Observation Browser
INSPIRE Conferece 24.06.2013
Florence, Italy.
Institute for Geoinformatics
http://ifgi.uni-muenster.de

2. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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Outline
• Background
• Sensor Observation Services
• Linked Open Data and the Semantic Web
• The Europa Linked Observation Browser
• Video (Use Case)
• Future Work

3. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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4. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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5. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
How big is the damage?
• 10 people died.
• € 11 billion loss.
• Thousands of people needed to leave their homes.
• Cultural heritage destroyed.
• ...
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6. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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How are environmental data currently
acquired?

7. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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Sensor Web Enablement
(SWE)

8. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Sensor Observation Service (SOS)
• OGC Standard (Open Geospatial Consortium)
• Enables Sensor Data Exchange
• Uses the (O&M) Observation and Measurements Standard (INSPIRE compliant)
• SOS will soon be INSPIRE compliant.
• Dr. Arne Bröring‘s Presentation (Making The Sensor Observation Service INSPIRE
Compliant), Thursday, at 14:00hr in the Room 1.
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9. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Interoperability Issue
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O&M
- Water level
- Water tempeature
- Water salinity
- ...
How to make observation data discoverable?
Linked Open Data!

10. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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What is Linked Open Data?

11. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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The web is full of DATA!

12. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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The Web
Link
But just for humans :(
Awesome discoverability!

13. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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?
• What is the article about?
• Who is the author?
• What is inside the picture?
• Where, when and by whom was the picture taken?
• ...
The forbidden fruit
Xxxxxx xxxxxx xxxxxxxx xxx xxx xxx
xxx. Xxxx xxxx x xxxxx xxxxxx

14. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Linked Open Data
“linked open data describes a method of publishing structured data so that it can be
interlinked and become more useful.”
Tim Berners-Lee (Inventor of the World Wide Web)
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15. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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ID 1
(Uniquily Identified)
ID 5
ID 3
ID 4
ID 2
ID 6

16. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Some benefits of Linked Open Data
• Attaches meaning to data
• Allows efficient thematic searches (e.g. person, company, city, book, etc.)
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My repository!
• Links different kinds of datasets making the WORLD a single big repository!
• Private data and public data can be mixed, enabling companies and individuals
to make better decisions and generate innovations.

17. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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How to make observation data
discoverable in the semantic web?

18. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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Europa Linked Observation
Browser
An overview in 3 steps…

19. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Interoperability Issue (recap)
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O&M
- Water level
- Water tempeature
- Water salinity
- ...

20. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Step 1 – Solving the discoverability issue.
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O&M
- Water level
- Water tempeature
- Water salinity
- ...
Transformation

21. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Step 2 – Consuming observation measurements
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• List observed phenomena (e.g. water level, water temperature, etc.)
• Correlate observed phenomena (e.g. Water level and Wind speed).
• Project in a virtual globe where the phenomena is being measured.
• Enables temporal queries .
• Shows a time-series animation of the choosen phenomena.

22. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Step 3 – diving into the semantic web
(Asking spatial-thematic questions)
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• Which cities are around the flooding area?
• Which museums are around the flooding area?
• Which cultural heritages are around the flooding area?
• Which of them have been destroyed and which of them are still in
danger? (proximity)

23. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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An Application Use Case

24. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Saving Cultural Heritages
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Users of the Europa Linked
Observation Browser
A biblical hero being
rescued! (David)

25. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Cultural Heritages around flooded area
• Check the water flow of the river Elbe in Dresden
• Represent the point in the globe and check the last observation
• Play a time-series animation.
• Make a thematic search looking for cultural heritages within an area of 25km from the
measured point.
• Navigate through the semantic web with the thematic search results. Querying
DBPedia.
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26. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Selecting an Observation Property
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27. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Selecting a Sensor
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28. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Viewing one measurement
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29. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Exploring the Semantic Web
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30. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Diving into the Semantic Web
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31. Name: Alber Sánchez, Matthias Pfeil, Jim Jones

32. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Europa Linked Observation Browser
Wrapping up...
• Provides a clean and interoperable platform for linking observation data to the
semantic web.
• Makes observation data discoverable not only by the browser, but for the rest of the
web (World).
• Enable time-series animation for a better visualization of the observed phenomena.
• It is totally supported by the SOS developers.
• It is awesome!
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33. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Future Work
• Export animation in a video format.
• Create a Java API with the application core functionalities
• Enable spatial queries.
• Enable „on the fly“ queries to SOS.
• Your idea!
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34. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Try it yourself
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https://github.com/jimjonesbr/de.ifgi.europa
Everything free and open source!
New to NASA World
Wind?
http://ifgi.uni-muenster.de/worldwind-tutorial/

35. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
Imagine a funny joke here...
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36. Name: Alber Sánchez, Matthias Pfeil, Jim Jones
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Muito obrigado!
Danke Schön!
Gracias!
Dziękuję bardzo!