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Semantics in Sensor Networks Workshop on Semantics and Future Internet Berlin, 1 Sep 2009 Oscar Corcho Facultad de Informática Universidad Politécnica de Madrid Campus de Montegancedo sn 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net [email_address] Phone: 34.91.3366605 Fax: 34.91.3524819
Sensor Networks ,[object Object],[object Object],Source: Antonis Deligiannakis
Parts of a Sensor ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source: Antonis Deligiannakis
Some examples of sensors and sensor parts ,[object Object],[object Object],[object Object],Source: Antonis Deligiannakis Passive RFID tag Berkeley Mica2 Stargate (Intel PXA255 cpu) Constraint Battery -- 2 ΑΑ Li-Ion Conserve to increase network lifetime CPU -- 7.38 MHz 400 MHz Computationally cheap algorithms Memory 1Kb 4KB SRAM, 512 KB EEPROM up to  256 MB FLASH Algorithms with low memory requirements Radio A few feet 30 0  μέτρα Depends on radio model Transmission range, bandwidth (bits/sec)
The Sensor Web ,[object Object],[object Object],[object Object],[object Object],Source: Adapted from Alan Smeaton’s invited talk at ESWC2009
Sensor Web: Is this part of the Web/Internet? Source: SemsorGrid4Env consortium
You haven’t done sensor networks research until... ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source: Adapted from Dave de Roure
Energy Constraints ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Sources of Energy Drain ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Assumptions and Goals in Subsequent Algorithms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Who are the end users of sensor networks? Source: Dave de Roure The climate change expert, or a simple citizen
And what do these users want? ,[object Object],[object Object],[object Object],[object Object]
But why is it worth falling in mud? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source: Dave de Roure
A set of challenges in sensor data management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source:  Data Management in the WorldWide Sensor Web. Balazinska et al.  IEEE Pervasive Computing, 2007
A set of challenges in sensor data management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source:  Data Management in the WorldWide Sensor Web. Balazinska et al.  IEEE Pervasive Computing, 2007
A semantic perspective on these challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Final Discussion: Hot Topics and Open Problems
Challenges. A 1000-feet architectural perspective http://www.semsorgrid4env.eu/
Challenge 1: Querying and (pre-)processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],29-30 Sep 2008 SemsorGrid4Env, Kick-Off, Madrid 0 2 1 3 4 5 6 7 8 9
SNEE as a Decision-Making Sequence ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SemsorGrid4Env, Kick-Off, Madrid routing parsing/type checking translation/rewriting algorithm assignment partitioning where-scheduling when-scheduling code generation <query, QoS-expectations>, <schemas, description(node,network), cost parameters> <N 1 , …, N m > nesC code abstract-syntactic tree logical-algebraic form physical-algebraic form PAF routing tree RT fragmented-algebraic form agenda 1 2 3 4 5 6 7 8 RT distributed-algebraic form RT DAF single-site phase multi-site phase
Challenge 1: Querying and (pre-)processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source: Antonis Deligiannakis
Challenge 1: Querying and (pre-)processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Challenge 2: Sensor Data Modelling and Management ,[object Object],[object Object],[object Object],[object Object]
Challenge 2: Sensor Data Modelling and Management ,[object Object],SensorLocation:stored ( id:int , locx:int, locy:int) TreeSensor:sensed ( id:int ,  ts:time , smoke:boolean, temperature:float, relHumidity:float) SoilSensor:sensed ( id:int ,  ts:time , moisture:float) WindSensor:sensed ( id:int ,  ts:time , speed:float, direction:float) RainGauge:sensed ( id:int ,  ts:time , level:float) Streaming SPARQL, C-SPARQL, etc. Linked Stream Data (ISWC2009 semantic sensor wokshop)   http://www.linkeddatastreams.org/sensor/heartrate/1/50.60242,-2.5225/1
Simple Query ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Semantically Integrating Streaming and Stored Data
Challenge 3: User Interaction with Sensor Data Source: SemsorGrid4Env consortium
Vision (after some iterations, and more to come) Source: RWI Working Group on IoT: Networked Knowledge Networked Knowledge Before 2010 2010-2015 2015-2020 Beyond 2020 Today Incremental Incremental-Visionary Visionary Interoperability ,[object Object],[object Object],[object Object],[object Object],[object Object],Information & Context ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Discovery ,[object Object],[object Object],[object Object],[object Object],Identity & Trust & Privacy ,[object Object],[object Object],[object Object],[object Object],[object Object],Provenance ,[object Object],[object Object],[object Object],[object Object]
Another list of R&D challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Semantics in Sensor Networks Workshop on Semantics and Future Internet Berlin, 1 Sep 2009 Oscar Corcho Facultad de Informática Universidad Politécnica de Madrid Campus de Montegancedo sn 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net [email_address] Phone: 34.91.3366605 Fax: 34.91.3524819
Real World: Where do we talk about this? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],SemsorGrid4Env: Objectives http://www.semsorgrid4env.eu Start date: 01/09/2009 Duration: 36 months
SemsorGrid4Env: use  cases  ,[object Object],[object Object]
SemsorGrid4Env: Technologies and Expected Results ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Semantics in Sensor Networks

  • 1. Semantics in Sensor Networks Workshop on Semantics and Future Internet Berlin, 1 Sep 2009 Oscar Corcho Facultad de Informática Universidad Politécnica de Madrid Campus de Montegancedo sn 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net [email_address] Phone: 34.91.3366605 Fax: 34.91.3524819
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. Sensor Web: Is this part of the Web/Internet? Source: SemsorGrid4Env consortium
  • 7.
  • 8.
  • 9.
  • 10.
  • 11. Who are the end users of sensor networks? Source: Dave de Roure The climate change expert, or a simple citizen
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17. Final Discussion: Hot Topics and Open Problems
  • 18. Challenges. A 1000-feet architectural perspective http://www.semsorgrid4env.eu/
  • 19.
  • 20.
  • 21.
  • 22.
  • 23.
  • 24.
  • 25.
  • 26. Challenge 3: User Interaction with Sensor Data Source: SemsorGrid4Env consortium
  • 27.
  • 28.
  • 29. Semantics in Sensor Networks Workshop on Semantics and Future Internet Berlin, 1 Sep 2009 Oscar Corcho Facultad de Informática Universidad Politécnica de Madrid Campus de Montegancedo sn 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net [email_address] Phone: 34.91.3366605 Fax: 34.91.3524819
  • 30.
  • 31.
  • 32.
  • 33.

Editor's Notes

  1. What we can provide to challenge 1 (pervasive and trusted network and service infrastructures), objective 1.3 (Internet of Things and enterprise environments)
  2. The climate change researcher The citizen with RFID tag, phone, MP3, GPS, ... The sensor network support guys
  3. The where clasue for both SPARQL extensions is the same
  4. The difficult part ( is there any research left for (Semantic Web) computer scientists? ) Spatio-temporal integration Identity RDF Stream generation? Optimizing SW technologies for mobile/physical devices which have a limited storage and processing resources; … .
  5. What we can provide to challenge 1 (pervasive and trusted network and service infrastructures), objective 1.3 (Internet of Things and enterprise environments)