Europa Linked Observation Browser

Name: Alber Sánchez, Matthias Pfeil, Jim Jones

Europa Linked Observation BrowserINSPIRE Conferece 24.06.2013Florence, Italy.

Institute for Geoinformaticshttp://ifgi.uni-muenster.de

http://ifgi.uni-muenster.de/


Europa Linked Observation Browser 2

Outline

• Background• Sensor Observation Services • Linked Open Data and the Semantic Web• The Europa Linked Observation Browser

• Video (Use Case)• Future Work






How big is the damage?

• 10 people died.• € 11 billion loss.•Thousands of people needed to leave their homes.•Cultural heritage destroyed.•...




How are environmental data currently acquired?



Sensor Web Enablement (SWE)


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.



Interoperability Issue


O&M

- Water level- Water tempeature- Water salinity- ...

How to make observation data discoverable?Linked Open Data!



What is Linked Open Data?



The web is full of DATA!



The Web

Link

But just for humans :(Awesome discoverability!



?• 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 xxxxxx. Xxxx xxxx x xxxxx xxxxxx


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)




ID 1(Uniquily Identified)

ID 5

ID 3

ID 4ID 2

ID 6


Some benefits of Linked Open Data

• Attaches meaning to data• Allows efficient thematic searches (e.g. person, company,

city, book, etc.)


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.



How to make observation data discoverable in the semantic

web?



Europa Linked Observation

Browser

An overview in 3 steps…


Interoperability Issue (recap)


O&M



Step 1 – Solving the discoverability issue.


O&M


Transformation


Step 2 – Consuming observation measurements


• 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.


Step 3 – diving into the semantic web(Asking spatial-thematic questions)


• 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)



An Application Use Case


Saving Cultural Heritages Europa Linked Observation Browser 24

Users of the Europa Linked Observation Browser

A biblical hero beingrescued! (David)


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.



Selecting an Observation Property



Selecting a Sensor



Viewing one measurementEuropa Linked Observation Browser 28


Exploring the Semantic WebEuropa Linked Observation Browser 29


Diving into the Semantic WebEuropa Linked Observation Browser 30




Europa Linked Observation BrowserWrapping 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!



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!



Try it yourself


https://github.com/jimjonesbr/de.ifgi.europa

Everything free and open source!

New to NASA World Wind?

http://ifgi.uni-muenster.de/worldwind-tutorial/






Imagine a funny joke here...




Muito obrigado!Danke Schön!

Gracias!Dziękuję bardzo!

Technology

Europa Linked Observation Browser