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The Mobile Social Lab

Uris 505, Columbia University

The Mobile Social Lab at Columbia University studies topics at the intersection of social networks, machine learning, and fairness.

People

Augustin Chaintreau – Faculty

Prof. Chaintreau is the PI of the Mobile Social Lab.

augustin (at) cs (dot) columbia (dot) edu

Gabriel Chuang – PhD Student

Gabriel is a 4rd-year PhD student. He's interested in social networks, opinion polarization, and elections. He also enjoys board games, teaching, and being active in his church community.

gtchuang (at) cs (dot) columbia (dot) edu

Filipp Shelobolin – PhD Student

Filipp is a 3rd-year PhD student working on auction theory and differential privacy. He also performs as a clown around NYC.

fs2859 (at) columbia (dot) edu

Alumni

PhD Students

Xi (Leslie) Chen (PhD 2024 → Google)
Roland Maio (PhD 2024)
Yiguang Zhang (PhD 2023 → Google)
Ana-Andreea Stoica (PhD 2022 → Max Planck)
Mathias Lécuyer (PhD 2019 → UBC)
Christopher Riederer (PhD 2017 → Uber)
Arthi Ramachandran (PhD 2017 → postdoc @ UChicago)

Postdocs/Visiting Students

Sandrine Müller (postdoc, 2021)
Maksym Gabielkov (visiting student 2015)
Francis Lan (visiting student 2015)
Franco Galante (visiting student)
Dorian Mazauric (postdoc, 2012)
Guillaume Ducoffe (2012)

Undergrad Students

Jessy (Xinyi) Han (BS 2020 → MIT PhD)
Lauren Arnett (2021)
Robin Netzorg (→ Berkeley PhD)
Lucy Wang (2013)
Yunsung Kim (BS 2016 → Stanford PhD)
Larissa Navarro (2015)
Daniel Echikson (2015)
Stephanie Huang (2015)
Cecelia Reyes (2015)
Coralie Phanord (2013)
Jake Cahan (2013)

Recent Publications

A full list of publications can be found here.

The Cost of Balanced Training-Data Production in an Online Data Market

Augustin Chaintreau, Roland Maio, Juba Ziani

Proceedings of the ACM on Web Conference 2025

Network Fairness Ambivalence: When does social network capital mitigate or amplify unfairness?

Y. Zhang, R. Mukhopadhyay, and A. Chaintreau

Proc. ACM Meas. Anal. Comput. Syst., 2024

Fairness Rising from the Ranks: HITS and PageRank on Homophilic Networks

A.-A. Stoica, N. Litvak, and A. Chaintreau

Proceedings of the ACM Web Conference 2024

Non-Existence of Stable Social Groups in Information-Driven Networks

A. Chaintreau, G. Ducoffe, and D. Mazauric

Theory Comput Syst, 2022

“I Don’t Have a Photograph, But You Can Have My Footprints." – Revealing the Demographics of Location Data

C. Riederer, S. Zimmeck, C. Phanord, A. Chaintreau, and S. Bellovin

ICWSM, 2021

Fun stuff

Our lab is home to three musical instruments: a keyboard (brought by Augustin); a guitar (brought by Filipp), and a cajon (brought by Gabriel).