Thanks for carrying out this assessment and writing up your findings. We need more extrinsic analyses along these lines to gauge completeness parity. Some suggestions for further steps:
- Refine your OSM confidence metric by ignoring edits by bots such as woodpeck_fixbot and b-jazz-bot (which doesn’t distinguish domain squatters as it touches
websitetags) - Repurpose the heuristics from intrinsic quality analyses as confidence factors
- Sample enough POIs to compare parity levels across geographies or population densities
- Compare OSM and Overture coverage of a wider variety of POI types, especially those that Google Maps may not cover as well
- Use another third-party data source as a baseline, such as AllThePlaces, Yelp, or Foursquare