Europa Linked Observation Browser · 2013-07-01 · Cultural Heritages around flooded area •...

Name: Alber Sánchez, Matthias Pfeil, Jim Jones

Europa Linked Observation Browser

Institute for Geoinformatics 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

xxx. 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 4

ID 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

- Water level

- Water tempeature

- Water salinity

- ...


Step 1 – Solving the discoverability issue.


O&M

- Water level

- Water tempeature

- Water salinity

- ...

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


Users of the Europa Linked

Observation Browser

A biblical hero being

rescued! (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 measurement



Exploring the Semantic Web Europa Linked Observation Browser 29


Diving into the Semantic Web Europa Linked Observation Browser 30


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!



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/

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







Imagine a funny joke here...




Muito obrigado!

Danke Schön!

Gracias!

Dziękuję bardzo!

Europa Linked Observation Browser · 2013-07-01 · Cultural Heritages around flooded area •...

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