Piotr Sapiezynski

Researcher, Northeastern University

Joined

July 2019

Names

Piotr Sapiezynski

Emails

****@gmail.com (Confirmed)

,

****@northeastern.edu

Personal Links

Career & Education History

Researcher

Northeastern University (northeastern.edu)

2019 – Present

Postdoc

Northeastern University (northeastern.edu)

2017 – 2019

Postdoc

Technical University of Denmark (dtu.dk)

2016 – 2017

PhD student

Technical University of Denmark (dtu.dk)

2013 – 2016

Advisors, Relations & Conflicts

No relations added

Expertise

algorithm audits

2013 – Present

Publications

Problematic Advertising and its Disparate Exposure on Facebook
Muhammad Ali, Angelica Goetzen, Elissa M. Redmiles, Piotr Sapiezynski, Alan Mislove
- USENIX Security Symposium
- Readers: Everyone
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
- 05 Oct 2023
- OpenReview Archive Direct Upload
- Readers: Everyone
Is the Facebook Ad Algorithm a Climate Discourse Influencer?
Aruna Sankaranarayanan, Erik Hemberg, Piotr Sapiezynski, Una-May O'Reilly
- NeurIPS CompSust 2023 Poster
- Readers: Everyone
Auditing Offline Data Brokers via Facebook's Advertising Platform
Giridhari Venkatadri, Piotr Sapiezynski, Elissa M. Redmiles, Alan Mislove, Oana Goga, Michelle L. Mazurek, Krishna P. Gummadi
- 2019 (modified: 12 Nov 2022)
- WWW 2019
- Readers: Everyone
Quantifying the Impact of User Attentionon Fair Group Representation in Ranked Lists
Piotr Sapiezynski, Wesley Zeng, Ronald E. Robertson, Alan Mislove, Christo Wilson
- 2019 (modified: 12 Nov 2022)
- WWW (Companion Volume) 2019
- Readers: Everyone
Measuring personalization of web search
Aniko Hannak, Piotr Sapiezynski, Arash Molavi Kakhki, Balachander Krishnamurthy, David Lazer, Alan Mislove, Christo Wilson
- 2013 (modified: 12 Nov 2022)
- WWW 2013
- Readers: Everyone

Co-Authors