 Copyright 2008 Digital Enterprise Research Institute. All rights reserved. Digital Enterprise Research Institute Live Linked Open Sensor Database Danh Le-Phuoc, Josiane Xavier Parreira, Michael Hausenblas, Yuanbo Han, Manfred Hauswirth DERI, NUI Galway, Ireland

Digital Enterprise Research Institute Queries to physical world Live queries  Give me the traffic status and camera image 5 nearest junctions  Notify me in the morning if the snow on the way to work is too deep to drive Semantically discover observations of physical world  “city planner may want to assess and monitor quality of life in certain area ⇛ his own domain of knowledge, then finds out that quality of life can be measured from noise, sunlight, humidity, air pollution, traffic condition, etc ⇛ find sensor sources can provide such data in his area of interest” 2 of XYZ

Digital Enterprise Research Institute Millions of sensor data sources US National Weather Service : Surface weather, climate monitoring, Upper Air, Satellite, Radar, River level, Sea level, Snow fall/depth, etc Commercial Weather Web services : Yahoo Weather, Weather Underground, Weather Bug, etc Yahoo traffic Cameras : Webcams, CCTVs, Traffic cameras, etc Personal Weather stations ⇛ Open and Live access 3 of XYZ

Digital Enterprise Research Institute Issues of accessibility and integration Data in several formats : XML, JSON, HTML, RSS, structural text, etc Lack of common data model and query language/interface Lack of metadata and semantics Lack of entry point for sensor data source discovery 4 of XYZ

Digital Enterprise Research Institute Live Linked Sensor Database Provides single entry point as a portal for exploring sensor data sources in unique data format Publishes sensors as linked data sources with rich semantics Contains enriched metadata and live sensor data Collects data from sensors and more 5 of XYZ

Digital Enterprise Research Institute Links physical observations to Web of Data 6 of XYZ Live Linked Open Sensor Database Geo-names Semantic Sensor Network ontology DOLCE SWEET ontology DBpedia

Digital Enterprise Research Institute Architecture 7 of XYZ Data transforming and annotatingSensor stream wrapper Data stream management system D2R Raw sensor data streamSensor description Relational Database Sensor Map

Digital Enterprise Research Institute Sensor Map 8 of XYZ

Digital Enterprise Research Institute SPARQL Endpoint 9 of XYZ

Digital Enterprise Research Institute Next steps Add more sensor data sources Link to LinkeGeoData, Eurostats, US Census,Data- Gov,etc. Modify D2RQ to support spatial query Improve performance for querying live and archived sensor data Add dynamic web sources, e.g., blog posts, news feeds, social network applications (Facebook, Twitter, etc.) and search engine updates as virtual sensor data sources 10 of XYZ

Digital Enterprise Research Institute Summary Live Linked Open Sensor Database provides:  Linked data of sensors (metadata and live/ archived data )  SensorMap: geo-based facet browser for exploring the data ( )  SPARQL endpoint powered by D2R  Mashup Composer powered by DERI Pipes 11 of XYZ

Digital Enterprise Research Institute Sensor composer 12 of XYZ