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The process uses social media accounts of known associates to accurately build a profile on an individual. A new study looked at more than 30 million posts from around 13,000 social media users to create a prediction on future activity. The results showed that, using as little as nine friends of one user, accurate predictions could be generated.
The findings have troubling implications for online privacy – namely that, in theory, not even leaving Facebook or Twitter would make someone exempt.
Published in online journal, Nature Human Behaviour, lead scientist James Bagrow revealed how they conducted the study.
He wrote: “The ability of a machine learning methods to accurately profile individuals from their online traces [followers] is reflected in the predictability of their written text.
“Indeed, with a language model trained to predict the words a user will post online, one can construct a profile of the user by evaluating the likelihoods of various words to be posted, such as terms related to politics.
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