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How TikTok Reads Your Mind


TikTok displays an endless stream of videos and, unlike the social media apps it is increasingly displacing, serves more as entertainment than as a connection to friends.

Credit: Lionel Bonaventure/Agence France-Presse/Getty Images

There are four main goals for TikTok's algorithm: , (), , and , which the company translates as "user value," "long-term user value," "creator value," and "platform value."

That set of goals is drawn from a frank and revealing document for company employees that offers new details of how the most successful video app in the world has built such an entertaining — some would say addictive — product.

The document, headed "TikTok Algo 101," was produced by TikTok's engineering team in Beijing. A company spokeswoman, Hilary McQuaide, confirmed its authenticity, and said it was written to explain to nontechnical employees how the algorithm works. The document offers a new level of detail about the dominant video app, providing a revealing glimpse both of the app's mathematical core and insight into the company's understanding of human nature — our tendencies toward boredom, our sensitivity to cultural cues — that help explain why it's so hard to put down. The document also lifts the curtain on the company's seamless connection to its Chinese parent company, ByteDance, at a time when the U.S. Department of Commerce is preparing a report on whether TikTok poses a security risk to the U.S.

From The New York Times
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