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How Your Personality Shifts When You Start Dating Someone

A new algorithm can tell if you’re single or not based on your online behavior.

Much has been written about Donald Trump's enthusiasm for Twitter, a category of analysis now basically its own genre. Mostly we focus on what his tweets tell us about his impulse control, or what they tell us about his disregard for the truth, or what they tell us about actual developments in national security. Most recently, though, people are wondering what they tell us about his marriage.

Researchers from ITMO University in Saint Petersburg, Russia, and the National University of Singapore built an algorithm that culls patterns from social media posts to divine whether a user is married or single. It has a success rate of 86 percent. It also identified Trump as single. Yet we all know Trump is married, courtesy of memes of a sad-looking woman trailing after him at events.

People have latched onto the error. The algorithm is cool, but most of the reason it's getting this much attention is the Trump thing, which isn't really its larger point; Trump isn't mentioned in the paper the researchers published. Plus, its 86-percent success rate is partly a result of its combined use of Twitter, Instagram, and Foursquare simultaneously, and the Trump-specific analysis used Twitter alone (though that still included multimedia).

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