GeoNames is … Gazetteer aggregator of open geo data I am... Marc Wick GeoNames
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 2 Gazetteer Over 7.5 million features (points) Pragmatic, useful, ease of use Cc-by licence 9 feature classes, 600 feature codes Available as extract or via web service
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 3
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 4 Attributes Name Latitude / Longitude Classification (FeatureClass>FeatureCode) Country, Administrative Divisions (<=4) Alternate Names (Endonyms/Exonyms) Population Elevation Timezone
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 5
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 6 Data Sources National Geospatial-Intelligence Agency (NGA) National Mapping Agencies (GNIS, GeoBase, …) Statistical Offices >120 sources User contributions (>14000 registered users) Data files Manual modifications
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 7 Feature Density Map
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 8 Trend – Open Government Data USA, later Canada, Australia,... Europe: UK, Spain, Italy, Switzerland, Denmark,... Why : Economy Shift from 'paper' to bytes
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 9 License Cc-by - 'attribution' Other open licenses: Cc0 Public domain Not open licenses: All 'share-alike' (odbl etc)
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 10 Challenges for Aggregators FeatureCodes not 1:1 non-ASCII Country codes Admin divisions Merge Apply periodic Updates Pattern matching Transliteration
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 11
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 12 Contributors Users (> 14'000 contributors): Individuals Companies and Organisations Edit interface or data files Focus: Topic or Area Few do a lot Preserve contribution with periodic updates
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 13 Quality Assurance Validation checks while entering data User levels Consistency Checks Verification and Confirmation of relevant modifications 'many eyes'
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 14 Hierarchy Child Neighbour Sibling
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 15 Ontology – Semantic Web Ontology RDF export, 150 mio triples Linked Data
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 16 Applications using GeoNames thousands of applications reverse geocoding site navigation search / geo-coding
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 17 Webservices
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 18 Historic Gazetteer Codes for 'abandoned' features Populated places Airports Alternate names Iso language codes Pseudo code: fr_1793
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 19 ISO Codes for Historic Languages
GeoNames, Marc WickHistorical Gazetteers for Space-Time Integration 13. April Seattle 20 Thank you for your attention.