Publications

🏆 Election Polls on Social Media: Prevalence, Biases, and Voter Fraud Beliefs
S. Scarano, V. Vasudevan, M. Samory, K. Yang, J. Yang, and P.A. Grabowicz
In International AAAI Conference on Web and Social Media (ICWSM) (Best Paper Honorable Mention), 2025

Discrimination Induced by Algorithmic Recourse Objectives
N. Perello, C. Cousins, Y. Zick, and P.A. Grabowicz
In ACM Conference on Fairness, Accountability, and Transparency (ACM FAccT), 2025

Open-World Classification with Bayesian Gaussian Mixture Models
J. Clarke, P.A. Grabowicz, and D. Jensen
In International Conference on Autonomous Agents and Multiagent Systems (AAMAS), 2025

Identifying and Investigating Global News Coverage of Critical Events such as Disasters and Terrorist Attacks
E. Cai, Xi Chen, R. Keeney, E. Zuckerman, B. OConnor, and P.A. Grabowicz
In International AAAI Conference on Web and Social Media (ICWSM), 2025

Effects of Research Paper Promotion via ArXiv and X
C. Bagchi, E. Malmi, and P.A. Grabowicz
In International AAAI Conference on Web and Social Media (ICWSM), 2025

Analyzing Support for U.S. Presidential Candidates in Social Polls
S. Scarano, V. Vasudevan, M. Samory, J. Yang, and P.A. Grabowicz
In JQD:DM (AAAI ICWSM), 2024

Global News Synchrony During the Start of the COVID-19 Pandemic
Xi Chen, S. Hale, D. Jurgens, M. Samory, E. Zuckerman, and P.A. Grabowicz
In The Web Conference, 2024

A Multilingual Similarity Dataset for News Article Frame
Xi Chen, M. Samory, S. Hale, D. Jurgens, and P.A. Grabowicz
In International AAAI Conference on Web and Social Media (ICWSM), 2024

Social media algorithms can curb misinformation, but do they?
C. Bagchi, F. Menczer, J. Lundquist, M. Tarafdar, A. Paik, and P.A. Grabowicz
In Science (eLetter), 2024

Towards an AI Accountability Policy
P.A. Grabowicz, N. Perello, Y. Zick
In Comment on FR Doc # 2023-07776 Posted by the National Telecommunications and Information Administration, 2023

Novelty in 2D CartPole Domain
P.A. Grabowicz, C. Pereyda, K. Clary, R. Stern, T.E. Boult, D. Jensen, L. B. Holder
In Springer book "A Unifying Framework for Formal Theories of Novelty", 2023

Learning from Discriminatory Training Data
P.A. Grabowicz, N. Perello, K. Takatsu
In AAAI/ACM Conference on Artificial Intelligence, Ethics, and Society (AIES), 2023
code

Marrying Fairness and Explainability in Supervised Learning
P.A. Grabowicz, N. Perello, A. Mishra
In ACM Conference on Fairness, Accountability, and Transparency (ACM FAccT), 2022
code

SemEval-2022 Task 8: Multilingual news article similarity
Xi Chen, A. Zeynali, C.Q. Camargo, F. Flöck, D. Gaffey, P.A. Grabowicz, S. Hale, D. Jurgens, and M. Samory
In International Workshop on Semantic Evaluation (NAACL), 2022
data

Towards Fair and Explainable Supervised Learning
A. Mishra, N. Perello, P.A. Grabowicz
In ICML Workshop on Socially Responsible Machine Learning, 2021
code

Towards a Unifying Framework for Formal Theories of Novelty
T.E. Boult, P.A. Grabowicz, D.S. Prijatelj, R. Stern, L. Holder, J. Alspector, M. Jafarzadeh, T. Ahmad, AR Dhamija, C. Li, S. Cruz, A. Shrivastava, C. Vondrick, W.J. Scheirer
In AAAI, 2021

Estimating community feedback effect on topic choice in social media with predictive modeling
D. Ifeoluwa Adelani, R. Kobayashi, I. Weber, P.A. Grabowicz
In EPJ Data Science, 2020
code

Bayesian Social Influence in the Online Realm
P.A. Grabowicz, F. Romero-Ferrero, T. Lins, F. Benevenuto, K.P. Gummadi, G.G. de P olavieja
In preprint, 2020

🏆 Demographic Inference and Representative Population Estimates from Multilingual Social Media Data
Z. Wang, S. Hale, D. Ifeoluwa Adelani, P.A. Grabowicz, T. Hartman, F. Flöck, D. Jurgens
In WebConf'19 (best poster presentation award, long paper), 2019
code & data

Predicting the Success of Online Petitions Leveraging Multidimensional Time-Series
J. Proskurnia, P.A. Grabowicz, R. Kobayashi, C. Castillo, P. Cudre-Mauroux, K. Aberer
In WWW'17, 2017
data

Open-source Web 2.0 System for the European Open Science Cloud
P.A. Grabowicz
In Letter to the High Level Expert Group (HLEG) of the European Open Science Cloud (EOSC), 2017

The Road to Popularity: the Dilution of Growing Audience on Twitter
P.A. Grabowicz, M. Babaei, J. Kulshrestha, I. Weber
In International AAAI Conference on Web and Social Media (ICWSM), 2016
data

Distinguishing between Topical and Non-topical Information Diffusion Mechanisms in Social Media
P.A. Grabowicz, N. Ganguly, K.P. Gummadi
In International AAAI Conference on Web and Social Media (ICWSM), 2016
data

OSoMe: The IUNI observatory on social media
C.A. Davis, P.A. Grabowicz, et al.
In PeerJ Computer Science 2:e87, 2016

On the Efficiency of the Information Networks in Social Media
M. Babaei†, P.A. Grabowicz†, I. Valera, K.P. Gummadi, M. Gomez-Rodriguez
In ACM WSDM'16, 2016

Microscopic Description and Prediction of Information Diffusion in Social Media: Quantifying the Impact of Topical Interests
P.A. Grabowicz, N. Ganguly, K.P. Gummadi
In WWW'15 Companion, 2015
data

On the Users’ Efficiency in the Twitter Information Network
M. Babaei, P.A. Grabowicz, I. Valera, M. Gomez-Rodriguez
In International AAAI Conference on Web and Social Media (ICWSM), 2015

Characterization of online groups along space, time, and social dimensions
D. Martin-Borregon, L. Aiello, P.A. Grabowicz, A. Jaimes, R. Baeza-Yates
In EPJ Data Science, 3(1), 8, 2014

🏆 Fast filtering and animation of large dynamic networks
P.A. Grabowicz, L.M. Aiello, F. Menczer
In EPJ Data Science, 3(1), 27 (WICI Data Challenge main prize), 2014
code & data

Entangling mobility and interactions in social media
P.A. Grabowicz, J.J. Ramasco, B. Goncalves, V.M. Eguiluz
In PLoS ONE 9(3): e92196, 2014

Dynamics in online social networks
P.A. Grabowicz, J.J. Ramasco, V.M. Eguiluz
In In Dynamics On and Of Complex Networks, Volume 2, 2013

Distinguishing Topical and Social Groups Based on Common Identity and Bond Theory
P.A. Grabowicz, L.M. Aiello, V.M. Eguiluz, A. Jaimes
In ACM WSDM'13, 2013

Leveraging Browsing Patterns for Topic Discovery and Photostream Recommendation
L. Chiarandini†, P.A. Grabowicz†, M. Trevisiol, A. Jaimes
In International AAAI Conference on Web and Social Media (ICWSM), 2013

Social features of online networks: the strength of intermediary ties in online social media
P.A. Grabowicz, J.J. Ramasco, E. Moro, J. Pujol, V.M. Eguiluz
In PLoS ONE 7(1): e29358, 2012

Heterogeneity shapes groups growth in social online communities
P.A. Grabowicz, V.M. Eguiluz
In EPL 97 28002, 2012

Opinion Dynamics with Hopfield Neural Networks
D. Stauffer, P.A. Grabowicz, J.A. Holyst
In preprint, 2008