Piotr Sapiezynski

Publication Activity (10 Years)

Years Active: 2013-2024
Publications (10 Years): 28

Top Topics

Social Networks

Behavioral Patterns

Targeted Advertising

Top Venues

WWW (Companion Volume)

Publications

Levi Kaplan, Piotr Sapiezynski
Comprehensively Auditing the TikTok Mobile App. WWW (Companion Volume) (2024)
Joachim Baumann, Piotr Sapiezynski, Christoph Heitz, Aniko Hannak
Fairness in Online Ad Delivery. FAccT (2024)
Muhammad Ali, Angelica Goetzen, Alan Mislove, Elissa M. Redmiles, Piotr Sapiezynski
Problematic Advertising and its Disparate Exposure on Facebook. CoRR (2023)
Muhammad Ali, Angelica Goetzen, Alan Mislove, Elissa M. Redmiles, Piotr Sapiezynski
Problematic Advertising and its Disparate Exposure on Facebook. USENIX Security Symposium (2023)
Florimond Houssiau, Piotr Sapiezynski, Laura Radaelli, Erez Shmueli, Yves-Alexandre de Montjoye
Detrimental network effects in privacy: A graph-theoretic model for node-based intrusions. Patterns 4 (1) (2023)
Piotr Sapiezynski, Avijit Ghosh, Levi Kaplan, Aaron Rieke, Alan Mislove
Algorithms that "Don't See Color": Measuring Biases in Lookalike and Special Ad Audiences. AIES (2022)
Levi Kaplan, Nicole Gerzon, Alan Mislove, Piotr Sapiezynski
Measurement and analysis of implied identity in ad delivery optimization. IMC (2022)
Muhammad Ali, Piotr Sapiezynski, Aleksandra Korolova, Alan Mislove, Aaron Rieke
Ad Delivery Algorithms: The Hidden Arbiters of Political Messaging. WSDM (2021)
Piotr Sapiezynski, Johanna Pruessing, Vedran Sekara
The Fallibility of Contact-Tracing Apps. CoRR (2020)
NaLette Brodnax, Piotr Sapiezynski
Evolution of Digital Advertising Strategies during the 2020 US Presidential Primary. CoRR (2020)
Piotr Sapiezynski, Wesley Zeng, Ronald E. Robertson, Alan Mislove, Christo Wilson
Quantifying the Impact of User Attentionon Fair Group Representation in Ranked Lists. WWW (Companion Volume) (2019)
Muhammad Ali, Piotr Sapiezynski, Aleksandra Korolova, Alan Mislove, Aaron Rieke
Ad Delivery Algorithms: The Hidden Arbiters of Political Messaging. CoRR (2019)
Muhammad Ali, Piotr Sapiezynski, Miranda Bogen, Aleksandra Korolova, Alan Mislove, Aaron Rieke
Discrimination through optimization: How Facebook's ad delivery can lead to skewed outcomes. CoRR (2019)
Piotr Sapiezynski, Wesley Zeng, Ronald E. Robertson, Alan Mislove, Christo Wilson
Quantifying the Impact of User Attention on Fair Group Representation in Ranked Lists. CoRR (2019)
Piotr Sapiezynski, Avijit Ghosh, Levi Kaplan, Alan Mislove, Aaron Rieke
Algorithms that "Don't See Color": Comparing Biases in Lookalike and Special Ad Audiences. CoRR (2019)
Muhammad Ali, Piotr Sapiezynski, Miranda Bogen, Aleksandra Korolova, Alan Mislove, Aaron Rieke
Discrimination through Optimization: How Facebook's Ad Delivery Can Lead to Biased Outcomes. Proc. ACM Hum. Comput. Interact. 3 (CSCW) (2019)
Giridhari Venkatadri, Elena Lucherini, Piotr Sapiezynski, Alan Mislove
Investigating sources of PII used in Facebook's targeted advertising. Proc. Priv. Enhancing Technol. 2019 (1) (2019)
Giridhari Venkatadri, Piotr Sapiezynski, Elissa M. Redmiles, Alan Mislove, Oana Goga, Michelle L. Mazurek, Krishna P. Gummadi
Auditing Offline Data Brokers via Facebook's Advertising Platform. WWW (2019)
Piotr Sapiezynski, Arkadiusz Stopczynski, David Kofoed Wind, Jure Leskovec, Sune Lehmann
Offline Behaviors of Online Friends. CoRR (2018)
Laura Radaelli, Piotr Sapiezynski, Florimond Houssiau, Erez Shmueli, Yves-Alexandre de Montjoye
Quantifying Surveillance in the Networked Age: Node-based Intrusions and Group Privacy. CoRR (2018)
Valentin Kassarnig, Enys Mones, Andreas Bjerre-Nielsen, Piotr Sapiezynski, David Dreyer Lassen, Sune Lehmann
Academic performance and behavioral patterns. EPJ Data Sci. 7 (1) (2018)
Bjarke Mønsted, Piotr Sapiezynski, Emilio Ferrara, Sune Lehmann
Evidence of Complex Contagion of Information in Social Media: An Experiment Using Twitter Bots. CoRR (2017)
Anikó Hannák, Piotr Sapiezynski, Arash Molavi Khaki, David Lazer, Alan Mislove, Christo Wilson
Measuring Personalization of Web Search. CoRR (2017)
Piotr Sapiezynski, Arkadiusz Stopczynski, David Kofoed Wind, Jure Leskovec, Sune Lehmann
Inferring Person-to-person Proximity Using WiFi Signals. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 1 (2) (2017)
Ioanna Psylla, Piotr Sapiezynski, Enys Mones, Sune Lehmann
The Role of Gender in Social Network Organization. CoRR (2017)
Valentin Kassarnig, Enys Mones, Andreas Bjerre-Nielsen, Piotr Sapiezynski, David Dreyer Lassen, Sune Lehmann
Academic Performance and Behavioral Patterns. CoRR (2017)
Laura Alessandretti, Piotr Sapiezynski, Sune Lehmann, Andrea Baronchelli
Evidence for a Conserved Quantity in Human Mobility. CoRR (2016)
Piotr Sapiezynski, Arkadiusz Stopczynski, David Kofoed Wind, Jure Leskovec, Sune Lehmann
Inferring Person-to-person Proximity Using WiFi Signals. CoRR (2016)
Piotr Sapiezynski, Arkadiusz Stopczynski, Radu Gatej, Sune Lehmann
Tracking Human Mobility using WiFi signals. CoRR (2015)
Piotr Sapiezynski, Radu Gatej, Alan Mislove, Sune Lehmann
Opportunities and Challenges in Crowdsourced Wardriving. Internet Measurement Conference (2015)
Arkadiusz Stopczynski, Piotr Sapiezynski, Alex Pentland, Sune Lehmann
Temporal Fidelity in Dynamic Social Networks. CoRR (2015)
Arkadiusz Stopczynski, Vedran Sekara, Piotr Sapiezynski, Andrea Cuttone, Jakob Eg Larsen, Sune Lehmann
Measuring large-scale social networks with high resolution. WORKING PAPER. CoRR (2014)
Aniko Hannak, Piotr Sapiezynski, Arash Molavi Kakhki, Balachander Krishnamurthy, David Lazer, Alan Mislove, Christo Wilson
Measuring personalization of web search. WWW (2013)
Jakob Eg Larsen, Piotr Sapiezynski, Arkadiusz Stopczynski, Morten Mørup, Rasmus Theodorsen
Crowds, Bluetooth, and Rock-n-Roll. Understanding Music Festival Participant Behavior. CoRR (2013)
Jakob Eg Larsen, Piotr Sapiezynski, Arkadiusz Stopczynski, Morten Mørup, Rasmus Theodorsen
Crowds, bluetooth, and rock'n'roll: understanding music festival participant behavior. PDM@ACM Multimedia (2013)