The Big Apple versus The Big Orange. The City of Dreams versus The City of Angels. I’m referring, of course, to the ongoing rivalry between New York City and Los Angeles. Hilarious “survey” videos and talk shows will give you one picture of the cities. My colleagues and I decided to take a more serious look at the differences between the cities, so we studied what everyone else was talking about – on Twitter. We set out to answer a simple research question: Are people who are located near each other likely to tweet about similar things? To do so,…

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