Big data magic trick: Show me a doorway, I’ll tell you the city
Soon, it seems, computers might know our world better than we do. Google is training computers to spot common images on video streams and match user photos of landmarks and other things against its image database. Facial-recognition software could help you identify a complete stranger in the crowd. And now, a group of researchers from Carnegie Mellon University and INRIA/Ecole Normale Supérieure have created an algorithm that can identify cities based on their unique architectural elements and other distinguising characteristics.
The research involved taking 25,000 random samples of photos of cities from Google Street View and letting a machine-learning algorithm figure out how similar features differ in each city. Interestingly, the system seems to be able to indirectly identify cities’ immigration and industrial histories. From their paper:…

