1.
#TP
Triple Pattern Fragments
Query Streamer
Publish & Query
Sensor Data
Ruben.Taelman@UGent.be
@rubensworks
RML
Continuous ETL process for sensor data publication
Extract Transform Load
Raw sensor
measurement
RDF sensor
measurement
Time-annotated
RDF sensor
measurement
Continuous client-side querying of sensor data
PREFIX dat: <http://vocab.datex.org/terms#>
PREFIX saref: <https://w3id.org/saref#>
PREFIX dbp: <http://dbpedia.org/ontology/>
SELECT ?temperature ?humidity WHERE {
?sensor a saref:Sensor;
dat:humidity ?humidity;
dbp:temperature ?temperature.
}
Expose sensor data through a low-cost interface
Sensor data can be consumed by clients
What is the current temperature and humidity?