An Approach to OSM Geocoding

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A canticle for the reverse geocoder

A canticle for the reverse geocoder

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  • 1. An Approach to OSM Geocoding: From Ships to Apples Tyler Bell: @twbell
  • 2. Matthew Fontaine Maury (January 14, 1806 – February 1, 1873) American astronomer, historian, oceanographer, meteorologist, cartographer, author, geologist, and educator. "Every ship that navigates the high seas may henceforth be regarded as a floating observatory, a temple of science" https://en.wikipedia.org/wiki/Matthew_Fontaine_Maury
  • 3. Geocoding: Hugely Exciting https://secure.flickr.com/photos/alexnormand/5992512756
  • 4. Geocoders: where your love of mapping goes to die https://secure.flickr.com/photos/nasamarshall/5855930819
  • 5. GPS: Most Successful Open Data Ever http://en.wikipedia.org/wiki/File:GPS_Satellite_NASA_art-iif.jpg
  • 6. ● The World Requires a(many) Open Geocoder(s) ● OSM is not great for geocoding ● The Geocoder use case has changed ○ Reverse geocoding now arguably more important ● Open addresses, open polys are critical for our future
  • 7. The Geocoding Use Case has Changed https://secure.flickr.com/photos/bostworld/2151258519
  • 8. Formerly: Maps and Nav ecure.flickr.com/photos/kachkaev/6167965144
  • 9. Now: About Context https://secure.flickr.com/photos/abavetta/5644816547
  • 10. July 2007 – scalebariffic April 2014 – we have satellite
  • 11. Source: “Emergence of a $Trillion MEMS Sensor Market”, Fairchild Semiconductor, Dr. Janusz Bryzek, SensorCon 2012, Yole Accelerometer Gyroscope Compass GPS Bluetooth Radio Picoprojector Image Sensor Camera Proximity Sensor Microphone Moving from a 3rd Person Perspective, to 1st
  • 12. Forward Reverse https://secure.flickr.com/photos/57336354@N00/5647194292
  • 13. 1. Reverse Geocoder Only 2. Designed for Tagging 3. Bloody Fast (~6k qps) 4. On-prem 5. Uniform Hierarchy 6. Unambiguous Entities 7. Global (natch) 8. Low/No Touch: Improves w/ OSM 9. Address Level Granularity
  • 14. OSM: the 'S' is for 'Street' https://secure.flickr.com/photos/bibliodem/6246117945
  • 15. Technical Challenges: Hierarchy Normalization Non-street Context Human Expectations https://secure.flickr.com/photos/lac-bac/7797312736
  • 16. LA: makes no sense
  • 17. { "features":[ { "name":"Century City Shopping Mall", "type":"mall" } ], "street_name":{ "name":"Avenue of the Stars" }, "address":{ "name":"1801 Avenue of the Stars" }, "locality":{ "name":"Los Angeles" }, "neighborhood":[ { "name":"Westside Village" } ], "country":{ "name":"US" }, "region":{ "name":"CA" }, "county":{ "name":"Los Angeles County" } } Response Packet
  • 18. 1. Get Everyone Using OSM 2. Force Examination of OdBL 3. Force Case Law (?) 4. Ultimately Raise Comfort Level 5. Increase Contributions to OSM 6. GOTO 1
  • 19. Data Value: Not Zero Sum https://secure.flickr.com/photos/pyth0ns/4571657460
  • 20. "When you and I interact, our ability to be together on Earth is predicated by all the stuff that people did for thousands of years. You and I didn't invent language. You and I didn't invent clothes, roads, agriculture. It's up to us to be not just the receivers of what was given to us, but the givers of whatever's going to come next." - John Bunker
  • 21. Fin Tyler Bell tyler@factual.com @twbell