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About this paper
Virginia Morini, Valentina Pansanella, Luca Pappalardo, Dino Pedreschi, Giulio Rossetti
The authors simulate social-media feeds to test how ranking rules and candidate selection shape exposure. Across two synthetic networks, popularity ranking concentrates visibility, while collaborative filtering spreads recommendations more broadly. In the scale-free network, follower-plus-popularity ranking yields a mean creator Gini of 0.721, close to 0.728 for global popularity; this is not evidence about real platforms.
Summary by alphaXiv.
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