1. Linked Data Geo Vocabulary Background GeoVoCampDC2011 03 June 2011 Todd Pehle tpehle@orbistechnologies.com

2. Linked Data Geo Vocabularies The Need for Geo Vocabularies in Linked Data The Lack of Geo Vocabularies in Linked Data The Linked Locations Story So Far How GeoVoCampDC2011 Can Help

3. Orbis Technologies, Inc. 3 The Need For Geo Vocabularies in the Web of Linked Locations Linked Data + Location Data = Linked Locations Web of Linked Locations: A spatiotemporal projection of the Web of Linked Data (a global spatial KB) Web of Linked Locations: Horizontally interlinks the Geo Web & vertically links the Semantic Web & Geo Web To build a Web of Linked Locations we need: –Linked Data –Geo Data –Query Language (GeoSPARQL) –Tools –Last but not least… A minimal core set of geo vocabulary Building Blocks

4. Building the Worlds Spatial KB Geo Web has base vector layers (GIS Data) to be connected to Web of Linked Data. Linked Locations inter-connects Geo Web features & bridges Linked Data with Geo Web. Linked Data exposes thematic attribution & relationships of Linked Locations. Linked Data + Geo Web Geo Web Links (horizontal links) (vertical links)

5. FOAF = Person Organization Ontology = Organizations OWL-Time = Time Event Ontology = Events (sort of) SIOC = Linking online communities, wikis, blogs, etc. SKOS = Thesauri, classification schemes, taxonomies Dublin Core = Authoring Metadata VOID = Vocabulary Of Interlinked Data (Dataset metadata) Provenance Vocabulary = Lineage, provenance The Lack of Geo Vocabularies in the Web of Linked Data W3C Basic Geo = 1 Geo Model (GeoSPARQL soon)

6. The Linked Locations Story So Far 2006: TimBL posts Linked Data principles 2006: W3C Geo XG Incubator Group – Produced GeoRSS variant and identified: Features, Types, Toponyms, Spatial Relations, CRS, Metadata, Web Services 2009: NeoGeoVoCamp – GeoSPARQL conceptually introduced, reviewed GeoXG, created 9-I model 2010-11: GeoSPARQL (OGC) – Produced minimal geographic feature/geometry plus spatial topology relationships model 2011: GeoVoCampSouthampton – Scale vocabulary, Nearness vocabulary, Geometry vocabulary, ISO 19115/19139 Metadata, Temporal vocabulary 2011: GeoVoCampDC2011 – Produced ???

7. GeoVoCampDC2011 Geo Vocabs What about where do we want to review, extend, create? Potential ideas for domain-independent modeling: –Review & Identify any needed extensions to GeoSPARQL since it will be a core component (additional semantics or other relations) –Review GeoVoCampSouthampton2011 vocabularies; align with GeoSPARQL –How to align W3C Basic Geo? –Points Of Interest Model: Lightweight feature type/toponym model used to construct/extend feature types (vs. fully define) –Survey/build/extend an events/spatiotemporal model that aligns with GeoSPARQL –Equivalence/disambiguation/similarity links for geographic features –GeoProvenance/GeoVOID –Linked Data Best Practices for modeling semantics of multi-part geometries, linear referencing, GPS tracks, routing, others?

8. Goal: The Linked Locations Core? GeoSPARQL Spatial Relations Events Feature Types Geometry

9. Topics: –W3C Basic Geo work –SWEET Overview –Topography & Landforms Modeling –ODPs –Bottom-up Methodology / Clustering –Triplifying GeoData –POI/Placename –Land Use Ontology –Geometry Vocab Review/Southampton Vocabs –OSM / LGD –GeoNames/Gazetteer issues