piotr sapieżyński
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Algorithms that "Don't See Color": Comparing Biases in Lookalike and Special Ad Audiences
Piotr Sapiezynski, Avijit Ghosh, Levi Kaplan, Alan Mislove, Aaron Rieke. 2019
Ad Delivery Algorithms: The Hidden Arbiters of Political Messaging
Muhammad Ali*, Piotr Sapiezynski*, Aleksandra Korolova, Alan Mislove, Aaron Rieke. arXiv preprint, 2019
Discrimination through optimization: How Facebook's ad delivery can lead to biased outcomes
Muhammad Ali*, Piotr Sapiezynski*, Miranda Bogen, Aleksandra Korolova, Alan Mislove, Aaron Rieke. CSCW 2019
Investigating sources of PII used in Facebook’s targeted advertising
Giridhari Venkatadri, Elena Lucherini, Piotr Sapiezynski, Alan Mislove. Proceedings on Privacy Enhancing Technologies, 2019
Evidence for a conserved quantity in human mobility
Laura Alessandretti, Piotr Sapiezynski, Vedran Sekara, Sune Lehmann, Andrea Baronchelli. Nature Human Behaviour, 2018
Evidence of Complex Contagion of Information in Social Media: An Experiment Using Twitter Bots
Bjarke Mønsted, Piotr Sapieżyński, Emilio Ferrara, Sune Lehmann. PLOS One, 2017