Aggregating Linked Sensor Data Christoph Stasch, Sven Schade, Alejandro Llaves, Krysztof Janowicz, Arne Bröring Institute for Geoinformatics Westfälische Wilhelms-Universität Münster 3rd Workshop on Semantic Sensor Networks Bonn, 2011 Christoph Stasch – [email protected]
This presentation was given at the Semantic Sensor Networks Workshop at the International Semantic Web Conference (ISWC) 2011. It shows our approach for Aggregating Linked Sensor Data.
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Aggregating Linked Sensor Data
Christoph Stasch, Sven Schade, Alejandro Llaves, Krysztof Janowicz, Arne Bröring
Institute for GeoinformaticsWestfälische Wilhelms-Universität Münster
3rd Workshop on Semantic Sensor NetworksBonn, 2011
• An aggregation process computes a value, an aggregate, for a group of attribute values by means of an aggregation function. The attribute values are grouped by a partitioning predicate.
• Aggregation Function: • Function used to compute the aggregate.
• Partitioning Predicate: • Predicate used to group objects before aggregating the
Janowicz, K., Bröring, A., Stasch, C., Schade, S., Everding, T., and Llaves, A. (2011): A RESTful Proxy and Data Model for Linked Sensor Data. International Journal of Digital Earth. DOI:10.1080/17538947.2011.614698, pp. 1-22
Stasch, C., Autermann, C., Foerster, T., Pebesma, E.: Towards a Spatiotemporal Aggregation Service in the Sensor Web. Poster Presentation. In: The 14th AGILE International Conference on Geographic Information Science. (2011)