1. D2.5 Proof-of-Concept Evaluation for Modelling Time and Space

2. Slide 2 of x 11/02/11 Motivation (I) Increasing amount of geospatial data being published as Linked Data LinkedGeoData OrdnanceSurvey, IGN Spain, IGN France, etc. European Environmental Agency... Different vocabularies (heterogeneity) GeoSPARQL NeoGeo W3CBasic GeoVocabulary the ISAProgramme Core Location Vocabulary schema.org’s coordinates and polygons

3. Slide 3 of x Motivation (II) Besides, geospatial data can be combined with statistical data, sensor data, etc., which also provide a temporal perspective Again, different (standardised) vocabularies W3C RDF Data Cube Semantic Sensor Network Ontology 11/02/11

4. Slide 4 of x Deliverable objective Implement and describe a prototype tool that makes use of data according to a combination of these vocabularies Map4RDF-iOS https://itunes.apple.com/en/app/map4rdf- lite/id828604407?mt=8 https://itunes.apple.com/en/app/map4rdf- lite/id828604407?mt=8 Developed in parallel to Map4RDF http://map4rdf.oeg-upm.net/ Two demos presented ISWC2013 Semantic Sensor Network workshop (SSN2013). Sydney, October 2013 W3C/OGC Linking Geospatial Data Workshop. Google Campus, London, March 2014

5. Slide 5 of x Map4RDF-iOS Description 5 Map4RDF-iOS End users Citizens / non-geographers / LGD providers

6. Slide 6 of x Map4RDF-iOS Description 6 Map4RDF-iOS main features – iOS mobile devices (v5 to v7) with optimised memory management – Multiple map servers (OSM, Google, Apple, Nokia) – Data – Statistical data modelled as W3C's DataCube – Multiple geospatial data models: W3C Geo XG, GeoLinkedData, and WKT/GeoSPARQL – Clustering of data points – Customizable by end users, e.g. definition of SPARQL endpoints and queries

7. Slide 7 of x Architecture Overview 7

8. Slide 8 of x Conclusions & Future Work 8 Future work – Connectivity module to save & share configurations, snapshots, and LGD datasets. – Visualization of Linked Stream Data in near real-time (link to our current work on SPARQL Stream ). – Module for data edition suggestions.

9. Slide 9 of x Discussion From reviews: “Does the RDF linked data add any integration value over a similar geo database client?” Need to standardize geographic representation in LD: WGS84, GeoSPARQL, GeoJSON... Specification of coordinate systems... 9

10. Slide 10 of x Map4RDF-iOS Description 10 Map4RDF-iOS limitations – Single platform (iOS) – Working with Titanium Appcelerator to provide a combination of native + HTML5 widgets – Only support for (non-authenticated) SPARQL endpoints. – One map server and one endpoint at a time. – No data edition – Connectivity module to save & share configurations, snapshots, and LGD datasets