2025
WebSci
The Effects of Enterprise Social Media on Communication Networks
Manoel Horta Ribeiro, Teny Shapiro, Siddharth Suri
2025
CSCW
Post Guidance for Online Communities
Manoel Horta Ribeiro, Ryan Lewis, Robert West, Sanjay Kairam
2025
Nature Human Behavior
On the Conversational Persuasiveness of Large Language Models: A Randomized Controlled Trial
Francesco Salvi, Manoel Horta Ribeiro, Riccardo Gallotti, Robert West
Media Coverage: Fast Company The Register RSI New Scientist
2025
CSCW
Deplatforming Norm-Violating Influencers on Social Media Reduces Overall Online Attention Toward Them
Manoel Horta Ribeiro, Shagun Jhaver, Jordi Cluet i Martinell, Marie Reignier-Tayar, Robert West
Media Coverage: Tech Policy Press
2025
ICWSM
Protection from Evil and Good: The Differential Effects of Page Protection on Wikipedia Article Quality
Thorsten Ruprechter, Manoel Horta Ribeiro, Robert West, Denis Helic
2024
Findings of the EMNLP
Can Language Models Recognize Convincing Arguments?
Paula Rescala, Manoel Horta Ribeiro, Tiancheng Hu, Robert West
2024
Comms. of the ACM
Prevalence and prevention of large language model use in crowd work
Veniamin Veselovsky*, Manoel Horta Ribeiro*, Philip Cozzolino, Andrew Gordon, David Rothschild, Robert West
Media Coverage: Science
2024
PNAS
Causally estimating the effect of YouTubeโs recommender system using counterfactual bots
Homa Hosseinmardi, Amir Ghasemian, Miguel Rivera-Lanas, Manoel Horta Ribeiro, Robert West, Duncan J Watts
๐ Paper, ๐ Pre-print, ๐ฆ Tweet
Media Coverage: TechXplore New Scientist
2024
ICWSM
Stranger Danger! Cross-Community Interactions with Fringe Users Increase the Growth of Fringe Communities on Reddit
Giuseppe Russo, Manoel Horta Ribeiro, Robert West
2024
ICWSM
Tube2Vec: Social and Semantic Embeddings of YouTube Channels
Lรฉopaul Boesinger, Manoel Horta Ribeiro, Veniamin Veselovsky, Robert West
2023
arXiv
Artificial Artificial Artificial Intelligence: Crowd Workers Widely Use Large Language Models for Text Production Tasks
Veniamin Veselovsky*, Manoel Horta Ribeiro*, Robert West
๐ Paper, ๐ฆ Tweet, ๐๏ธ Code
Media Coverage: Economist ๐ฎ๐น WIRED.it WIRED The Register TechXplore Tech Crunch Tech Crunch Science Platformer mint ๐ฎ๐น Linkiesta Import AI Futurism ๐ซ๐ท Frandroid Fortune ๐ซ๐ท Courrier International Bloomberg ๐ช๐ฌ Al-Masry Al-Youm Technology Review
2023
PNAS Nexus
Deplatforming did not decrease Parler usersโ activity on fringe social media
Manoel Horta Ribeiro, Homa Hosseinmardi, Robert West, Duncan Watts
2023
ICWSM
The Amplification Paradox in Recommender Systems
Manoel Horta Ribeiro, Veniamin Veselovsky, Robert West
2023
TheWebConf
Automated Content Moderation Increases Adherence to Community Guidelines
Manoel Horta Ribeiro, Justin Cheng, Robert West
๐ Paper, ๐ Pre-print, ๐น Presentation, โถ๏ธ Slides
Media Coverage: Facebook Research Blog
2023
ICWSM
Quotatives Indicate Decline in Objectivity in US Political News
Tiancheng Hu, Manoel Horta Ribeiro, Robert West, Andreas Spitz
2023
ICWSM
Spillover of Antisocial Behavior from Fringe Platforms: The Unintended Consequences of Community Banning
Giuseppe Russo, Luca Verginer, Manoel Horta Ribeiro, Giona Casiraghi
2023
WebSci
Understanding Online Migration Decisions Following the Banning of Radical Communities
Giuseppe Russo, Manoel Horta Ribeiro, Giona Casiraghi, Luca Verginer
2022
ICWSM
Post approvals in online communities
Manoel Horta Ribeiro, Justin Cheng, Robert West
๐ Paper, ๐ Pre-print, ๐ Blog, ๐น Presentation, ๐ Poster, ๐ฆ Tweet
2022
WebSci
Analyzing the Sleeping Giants Activism Model in Brazil
Bรกrbara Gomes Ribeiro, Manoel Horta Ribeiro, Virgรญlio Almeida, Wagner Meira Jr
๐ Paper, ๐ Pre-print, ๐๏ธ Code and data, ๐ฆ Tweet
Media Coverage: Tech Policy Press
2022
CSCW
Characterizing Alternative Monetization Strategies on YouTube
Yiqing Hua*, Manoel Horta Ribeiro*, Thomas Ristenpart, Robert West, Mor Naaman
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐น Presentation, โถ๏ธ Slides, ๐ฆ Tweet
Media Coverage: The Verge FastCompany
2022
MEDIATE Workshop
What do fact checkers fact-check when?
Manoel Horta Ribeiro, Savvas Zannettou, Oana Goga, Fabrรญcio Benevenuto, Robert West
2021
Scientific Reports
Volunteer contributions to Wikipedia increased during COVID-19 mobility restrictions
Thorsten Ruprechter, Manoel Horta Ribeiro, Tiago Santos, Florian Lemmerich, Markus Strohmaier, Robert West, Denis Helic
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐ฆ Tweet
Media Coverage: ๐ฉ๐ช Wikimedia New Scientist
2021
Nature Communications
Deep neural network-estimated electrocardiographic age as a mortality predictor
Emilly M. Lima, Antรดnio H. Ribeiro, Gabriela M. M. Paixรฃo, Manoel Horta Ribeiro, Marcelo M. Pinto-Filho, Paulo R. Gomes, Derick M. Oliveira, Ester C. Sabino, Bruce B. Duncan, Luana Giatti, Sandhi M. Barreto, Wagner Meira Jr, Thomas B. Schรถn, Antonio Luiz P. Ribeiro
๐ Paper, ๐๏ธ Data 1, ๐๏ธ Data 2, ๐๏ธ Data 3, ๐๏ธ Code, ๐ฆ Tweet
Media Coverage: ๐ง๐ท veja
2021
WebSci
Are Anti-Feminist Communities Gateways to the Far Right? Evidence from Reddit and YouTube
Robin Mamiรฉ, Manoel Horta Ribeiro, Robert West
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐๏ธ๏ธ Data, ๐น Presentation, โถ๏ธ Slides, ๐ฆ Tweet
Media Coverage: New Scientist
2021
ICWSM
YouNiverse: Large-Scale Channel and Video Metadata from English-Speaking YouTube
Manoel Horta Ribeiro, Robert West
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐๏ธ Data, ๐ Blog, โถ๏ธ Slides, ๐น Presentation, ๐ฆ Tweet
2021
CSCW
Do Platform Migrations Compromise Content Moderation? Evidence from r/The_Donald and r/Incels
Manoel Horta Ribeiro, Shagun Jhaver, Savvas Zannettou, Jeremy Blackburn, Emiliano De Cristofaro, Gianluca Stringhini, Robert West
๐ Paper, ๐ Pre-print, ๐๏ธ Code and Data, ๐น Presentation, โถ๏ธ Slides, ๐ฆ Tweet
Media Coverage: WIRED The Washington Post The Conversation ๐ง๐ท Manual do Usuรกrio ๐ช๐ธ El Paรญs The Atlantic
2021
ICWSM
Sudden Attention Shifts on Wikipedia During the COVID-19 Crisis
Manoel Horta Ribeiro*, Kristina Gligoriฤ*, Maxime Peyrard*, Florian Lemmerich, Markus Strohmaier, Robert West
๐ Paper, ๐ Pre-print, ๐๏ธ Code and Data, ๐น Presentation, โถ๏ธ Slides, ๐ฆ Tweet
2021
ICWSM
The Evolution of the Manosphere Across the Web
Manoel Horta Ribeiro, Jeremy Blackburn, Barry Bradlyn, Emiliano De Cristofaro, Gianluca Stringhini, Summer Long, Stephanie Greenberg, Savvas Zannettou
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐๏ธ Data, ๐น Presentation, โถ๏ธ Slides, ๐ฆ Tweet
Media Coverage: The Atlantic ๐ง๐ท Folha de Sรฃo Paulo ๐ช๐ธ Newtral ๐จ๐ฆ La Presse ๐ฉ๐ช NDR ๐ฉ๐ช Krautreporter ๐ฉ๐ช DER SPIEGEL ๐ง๐ท TAB Uol Newsweek MIT Tech Review ๐ช๐ธ El Paรญs Daily Mail ๐จ๐ญBeobachter
2020
Nature Communications
Automatic Diagnosis of the Short-Duration 12-Lead ECG using a Deep Neural Network: the CODE Study
Antรดnio H Ribeiro, Manoel Horta Ribeiro, Gabriela Paixรฃo, Derick Oliveira, Paulo R Gomes, Jรฉssica A Canazart, Milton Pifano, Wagner Meira Jr, Thomas B Schรถn, Antonio Luiz Ribeiro
๐ Paper, ๐๏ธ Code, ๐๏ธ Data, ๐น Models, โถ๏ธ Slides, ๐ฆ Tweet
Media Coverage: Medical News ๐ธ๐ช Forskning
2020
ACM FAccT
Auditing Radicalization Pathways on YouTube
Manoel Horta Ribeiro, Raphael Ottonni, Robert West, Virgรญlio AF Almeida, Wagner Meira Jr
๐ Paper, ๐ Pre-print, ๐น Presentation, โถ๏ธ Slides, ๐๏ธ Code, ๐ฆ Tweet
Media Coverage: SLPC New York Times Tech Crunch ๐ง๐ท piauรญ ๐จ๐ญNZZ MIT Tech Review Fox Business ๐ช๐ธ El Diario WIRED VentureBeat The Verge Rolling Stone ๐ง๐ท Nexo Jornal ๐ฉ๐ช Netzpolitik NBC News ๐ซ๐ท Le Big Data ๐ฎ๐ช Irish Times ๐ฉ๐ช Deutschlandfunk VICE
2019
TheWebConf
Message Distortion in Information Cascades
Manoel Horta Ribeiro, Kristina Gligoric, Robert West
๐ Paper, ๐ Pre-print, ๐๏ธ Code/Data, โถ๏ธ Slides, ๐น๏ธ Demo, ๐ Poster
Media Coverage: WCSJ2019
2018
ICWSM
Characterizing and Detecting Hateful Users on Twitter
Manoel Horta Ribeiro, Pedro H Calais, Yuri A Santos, Virgรญlio AF Almeida, Wagner Meira Jr
๐ Paper, ๐ Pre-print, ๐๏ธ Code, ๐ Data, โถ๏ธ Slides, ๐ Poster
