The objective of the Pilot Study was to validate the data collection technique. This involved exploring the number of clicks required to obtain a stable ranking, explore whether the orthogonal components between similar evaluative question—such as which place looks safer, or more upper class—contained relevant information, and study the ability of the method to characterize cities. We find that the method is able to provide an stable ranking with nearly 30 clicks per image, and that it provides a good characterization of cities. Interestingly, we find that the cities in the pilot studied exhibited larger difference when comparing their variances than averages, indicating that the method is a good way to estimate the contrast or inequality of cities. We validated the information contained in the measures of urban perception with data on violent crime for NYC, finding that the measures of urban perception captured in the study correlate with the location of violate crime after controlling for the income, area, population and average age of each NYC zip code.
Which Place Looks Safer?
Which Place Looks More Upper-Class?
Which Place Looks More Unique?
New York City (incl. Manhattan and parts of Queens, Brooklyn & The Bronx), Boston (incl. parts of Cambridge), Linz and Salzburg.
More Info: The Collaborative Image of The City: Mapping the Inequality of Urban Perception
Philip Salesses, Katja Schechtner, César A. Hidalgo. PLOS ONE (2013) > Download PDF
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