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![Page 1: Twofish[es]. What are twofishes? A coarse geocoder from Foursquare City/neighborhood/POI level In-memory Fast? Splitting pizza new york -> pizza near](https://reader036.dokumen.tips/reader036/viewer/2022062321/56649f295503460f94c41dd2/html5/thumbnails/1.jpg)
Twofish[es]
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What are twofishes?
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A coarse geocoder from Foursquare
• City/neighborhood/POI level• In-memory• Fast?• Splitting
• pizza new york -> pizza near [40.74,-74]
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Based on open data
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Geonames
CC-BY (Attribution)
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Flickr
Public Domain
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Foursquare <3 OSM
coming soon.
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Algorithm
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Recursive Descent Parse Tree
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[soho] + [new york]
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[soho] + [new york]
parents• london• united kingdom
Soho
parents• new york (city)• new york (state)• united states
Soho
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[soho] + [new york]
parents• london• united kingdom
Soho
parents• new york (city)• new york (state)• united states
Soho
New York (city) New York (state)
New York, TX New York, IA
parents• new york (state)• united states
parents• united states
parents• iowa• united states
parents• texas• united states
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[soho] + [new york]
parents• london• united kingdom
Soho
parents• new york (city)• new york (state)• united states
Soho
New York (city) New York (state)
New York, TX New York, IA
parents• new york (state)• united states
parents• united states
parents• iowa• united states
parents• texas• united states
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[soho] + [new york]
parents• london• united kingdom
Soho
parents• new york (city)• new york (state)• united states
Soho
New York (state)
New York, TX New York, IA
parents• new york (state)• united states
parents• united states
parents• iowa• united states
parents• texas• united states
New York (city)
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Done!
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Postal Codes = Hack
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Launching Thursday!
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In our API
https://foursquare.com/v2/venues/search?query=pizza&ll=40.74,-74
https://foursquare.com/v2/venues/search?query=pizza&near=nyc
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Hosted in our API
https://foursquare.com/v2/geo/geocode?query=nyc
• Limited release while we tweak the API
• Email [email protected] for access
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Open Sourced
http://github.com/foursquare/twofishes
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Office Hours @ 4:15 (now!)
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References
• http://geonames.org/• http://code.flickr.com/blog/
2011/01/08/flickr-shapefiles-public-dataset-2-0/
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