1. Trusting the Crowd - Methods for Moving from Crowdsourced to Authoritative Data Kate Chapman @wonderchook

2. Volunteered Geographic Information (VGI) vs. Crowdsourcing?

3. Crowdsourced “vs.” Authoritative Data

4. Is participatory mapping crowdsourcing?

9. How does the magic happen?

10. New York City Building Footprints Imported into OpenStreetMap

20. crowdgov.wordpress.com/ Vernacular Place Names by OS and UK Coastguard Californian Roadkill Observation System (CROS) US Geological Survey – ‘Did You Feel It?’ National Biodiversity Data Center Ireland (records.biodiversity.ie) Towns Conquer – Gamification approach to validation of IGN National Toponyms database of Spain Skandobs – The Scandinavian predator tracking system Humanitarian OSM Team mapping in Monglolia Mapping schools and health facilities in Kathmandu Valley MapKibera South Sudan Mapping The National Map Corps – Crowdsourcing the National Map iCitizen: Mapping Service Delivery in a South African Municipality Boston StreetBump Natural Resources Canada-OpenStreetMap Synergy FixMyStreet Use of Corine Land Cover in OpenStreetMap in France Haiti Disaster Response Community Mapping for Exposure in Indonesia New York City Open Data Initiative State Department HIU – Imagery to the Crowd

21. Thank you! @wonderchook kchapman@cadasta.org