We have partnered with SafeGraph as our primary source of POI data. We use their Places and Geometry data sets to add contextual information to our Audience Graph.
The Places data set provides us with location names, brands and NAICS codes which we use to define our audience types.
You can find the Places schema here.
The Geometry data set provides us with POI footprints and space hierarchy metadata.
You can find the Geometry schema here.