1.1k citations · 1.6k across the 24 of their papers we have counts for
27 papers
How the cascade inference problem distorts information diffusion
Matthew R. DeVerna, Francesco Pierri, Rachith Aiyappa +3
To analyze the flow of information online, experts often rely on platform-provided data from social media companies, which typically attribute all resharing actions to an original…
The Dawn of Decentralized Social Media: An Exploration of Bluesky's Public Opening
Erfan Samieyan Sahneh, Gianluca Nogara, Matthew R. DeVerna +5
Bluesky is a Twitter-like decentralized social media platform that has recently grown in popularity. After an invite-only period, it opened to the public worldwide on February 6th,…
A comparison of online search engine autocompletion in Google and Baidu
Geng Liu, Pietro Pinoli, Stefano Ceri +1
Warning: This paper contains content that may be offensive or upsetting. Online search engine auto-completions make it faster for users to search and access information. However, t…
Modeling the amplification of epidemic spread by individuals exposed to misinformation on social media
Matthew R. DeVerna, Francesco Pierri, Yong-Yeol Ahn +3
Understanding how misinformation affects the spread of disease is crucial for public health, especially given recent research indicating that misinformation can increase vaccine he…
Online Networks of Support in Distressed Environments: Solidarity and Mobilization during the Russian Invasion of Ukraine
Jinyi Ye, Nikhil Jindal, Francesco Pierri +1
Despite their drawbacks and unintended consequences, social media networks have recently emerged as a crucial resource for individuals in distress, particularly during times of cri…
Retrieving false claims on Twitter during the Russia-Ukraine conflict
Valerio La Gatta, Chiyu Wei, Luca Luceri +2
Nowadays, false and unverified information on social media sway individuals' perceptions during major geo-political events and threaten the quality of the whole digital information…
A Multi-Platform Collection of Social Media Posts about the 2022 U.S. Midterm Elections
Rachith Aiyappa, Matthew R. DeVerna, Manita Pote +13
Social media are utilized by millions of citizens to discuss important political issues. Politicians use these platforms to connect with the public and broadcast policy positions.…
ITA-ELECTION-2022: A multi-platform dataset of social media conversations around the 2022 Italian general election
Francesco Pierri, Geng Liu, Stefano Ceri
Online social media play a major role in shaping public discourse and opinion, especially during political events. We present the first public multi-platform dataset of Italian-lan…
Political advertisement on Facebook and Instagram in the run up to 2022 Italian general election
Francesco Pierri
Targeted advertising on online social platforms has become increasingly relevant in the political marketing toolkit. Monitoring political advertising is crucial to ensure accountab…
Propaganda and Misinformation on Facebook and Twitter during the Russian Invasion of Ukraine
Francesco Pierri, Luca Luceri, Nikhil Jindal +1
Online social media represent an oftentimes unique source of information, and having access to reliable and unbiased content is crucial, especially during crises and contentious ev…
Identifying and Characterizing Behavioral Classes of Radicalization within the QAnon Conspiracy on Twitter
Emily L. Wang, Luca Luceri, Francesco Pierri +1
Social media provide a fertile ground where conspiracy theories and radical ideas can flourish, reach broad audiences, and sometimes lead to hate or violence beyond the online worl…
How does Twitter account moderation work? Dynamics of account creation and suspension on Twitter during major geopolitical events
Francesco Pierri, Luca Luceri, Emily Chen +1
Social media moderation policies are often at the center of public debate, and their implementation and enactment are sometimes surrounded by a veil of mystery. Unsurprisingly, due…
One Year of COVID-19 Vaccine Misinformation on Twitter: Longitudinal Study
Francesco Pierri, Matthew R. DeVerna, Kai-Cheng Yang +3
Vaccinations play a critical role in mitigating the impact of COVID-19 and other diseases. This study explores COVID-19 vaccine misinformation circulating on Twitter during 2021, w…
What are Your Pronouns? Examining Gender Pronoun Usage on Twitter
Julie Jiang, Emily Chen, Luca Luceri +4
Stating your gender pronouns, along with your name, is becoming the new norm of self-introductions at school, at the workplace, and online. The increasing prevalence and awareness…
VaccinEU: COVID-19 vaccine conversations on Twitter in French, German and Italian
Marco Di Giovanni, Francesco Pierri, Christopher Torres-Lugo +1
Despite the increasing limitations for unvaccinated people, in many European countries there is still a non-negligible fraction of individuals who refuse to get vaccinated against…
Online misinformation is linked to early COVID-19 vaccination hesitancy and refusal
Francesco Pierri, Brea Perry, Matthew R. DeVerna +4
Widespread uptake of vaccines is necessary to achieve herd immunity. However, uptake rates have varied across U.S. states during the first six months of the COVID-19 vaccination pr…
CoVaxxy: A Collection of English-language Twitter Posts About COVID-19 Vaccines
Matthew R. DeVerna, Francesco Pierri, Bao Tran Truong +7
With a substantial proportion of the population currently hesitant to take the COVID-19 vaccine, it is important that people have access to accurate information. However, there is…
VaccinItaly: monitoring Italian conversations around vaccines on Twitter and Facebook
Francesco Pierri, Andrea Tocchetti, Lorenzo Corti +4
We present VaccinItaly, a project which monitors Italian online conversations around vaccines, on Twitter and Facebook. We describe the ongoing data collection, which follows the S…
The COVID-19 Infodemic: Twitter versus Facebook
Kai-Cheng Yang, Francesco Pierri, Pik-Mai Hui +4
The global spread of the novel coronavirus is affected by the spread of related misinformation -- the so-called COVID-19 Infodemic -- that makes populations more vulnerable to the…
Information disorders on Italian Facebook during COVID-19 infodemic
Alessandro Celestini, Marco Di Giovanni, Stefano Guarino +1
In this work we carry out an exploratory analysis of online conversations on the Italian Facebook during the recent COVID-19 pandemic. We analyze the circulation of controversial t…
Human Mobility in Response to COVID-19 in France, Italy and UK
Alessandro Galeazzi, Matteo Cinelli, Giovanni Bonaccorsi +5
The policies implemented to hinder the COVID-19 outbreak represent one of the largest critical events in history. The understanding of this process is fundamental for crafting and…
Evidence of economic segregation from mobility lockdown during COVID-19 epidemic
Giovanni Bonaccorsi, Francesco Pierri, Matteo Cinelli +8
In response to the COVID-19 pandemic, National governments have applied lockdown restrictions to reduce the infection rate. We perform a massive analysis on near real-time Italian…
A multi-layer approach to disinformation detection on Twitter
Francesco Pierri, Carlo Piccardi, Stefano Ceri
We tackle the problem of classifying news articles pertaining to disinformation vs mainstream news by solely inspecting their diffusion mechanisms on Twitter. Our technique is inhe…
HoaxItaly: a collection of Italian disinformation and fact-checking stories shared on Twitter in 2019
Francesco Pierri, Alessandro Artoni, Stefano Ceri
We released over 1 million tweets shared during 2019 and containing links to thousands of news articles published on two classes of Italian outlets: (1) disinformation websites, i.…