882 citations · 1.2k across the 13 of their papers we have counts for
16 papers
Are Anti-Feminist Communities Gateways to the Far Right? Evidence from Reddit and YouTube
Robin Mamié, Manoel Horta Ribeiro, Robert West
Researchers have suggested that "the Manosphere," a conglomerate of men-centered online communities, may serve as a gateway to far right movements. In that context, this paper quan…
Volunteer contributions to Wikipedia increased during COVID-19 mobility restrictions
Thorsten Ruprechter, Manoel Horta Ribeiro, Tiago Santos +4
Wikipedia, the largest encyclopedia ever created, is a global initiative driven by volunteer contributions. When the COVID-19 pandemic broke out and mobility restrictions ensued ac…
YouNiverse: Large-Scale Channel and Video Metadata from English-Speaking YouTube
Manoel Horta Ribeiro, Robert West
YouTube plays a key role in entertaining and informing people around the globe. However, studying the platform is difficult due to the lack of randomly sampled data and of systemat…
Do Platform Migrations Compromise Content Moderation? Evidence from r/The_Donald and r/Incels
Manoel Horta Ribeiro, Shagun Jhaver, Savvas Zannettou +4
When toxic online communities on mainstream platforms face moderation measures, such as bans, they may migrate to other platforms with laxer policies or set up their own dedicated…
Experts and authorities receive disproportionate attention on Twitter during the COVID-19 crisis
Kristina Gligorić, Manoel Horta Ribeiro, Martin Müller +5
Timely access to accurate information is crucial during the COVID-19 pandemic. Prompted by key stakeholders' cautioning against an "infodemic", we study information sharing on Twit…
Sudden Attention Shifts on Wikipedia During the COVID-19 Crisis
Manoel Horta Ribeiro, Kristina Gligorić, Maxime Peyrard +3
We study how the COVID-19 pandemic, alongside the severe mobility restrictions that ensued, has impacted information access on Wikipedia, the world's largest online encyclopedia. A…
The Evolution of the Manosphere Across the Web
Manoel Horta Ribeiro, Jeremy Blackburn, Barry Bradlyn +5
In this paper, we present a large-scale characterization of the Manosphere, a conglomerate of Web-based misogynist movements roughly focused on "men's issues," which has seen signi…
Auditing Radicalization Pathways on YouTube
Manoel Horta Ribeiro, Raphael Ottoni, Robert West +2
Non-profits, as well as the media, have hypothesized the existence of a radicalization pipeline on YouTube, claiming that users systematically progress towards more extreme content…
Automatic diagnosis of the 12-lead ECG using a deep neural network
Antônio H. Ribeiro, Manoel Horta Ribeiro, Gabriela M. M. Paixão +9
The role of automatic electrocardiogram (ECG) analysis in clinical practice is limited by the accuracy of existing models. Deep Neural Networks (DNNs) are models composed of stacke…
Message Distortion in Information Cascades
Manoel Horta Ribeiro, Kristina Gligorić, Robert West
Information diffusion is usually modeled as a process in which immutable pieces of information propagate over a network. In reality, however, messages are not immutable, but may be…
Automatic Diagnosis of Short-Duration 12-Lead ECG using a Deep Convolutional Network
Antônio H. Ribeiro, Manoel Horta Ribeiro, Gabriela Paixão +7
We present a model for predicting electrocardiogram (ECG) abnormalities in short-duration 12-lead ECG signals which outperformed medical doctors on the 4th year of their cardiology…
Characterizing and Detecting Hateful Users on Twitter
Manoel Horta Ribeiro, Pedro H. Calais, Yuri A. Santos +2
Most current approaches to characterize and detect hate speech focus on \textit{content} posted in Online Social Networks. They face shortcomings to collect and annotate hateful sp…
"Like Sheep Among Wolves": Characterizing Hateful Users on Twitter
Manoel Horta Ribeiro, Pedro H. Calais, Yuri A. Santos +2
Hateful speech in Online Social Networks (OSNs) is a key challenge for companies and governments, as it impacts users and advertisers, and as several countries have strict legislat…
"Everything I Disagree With is #FakeNews": Correlating Political Polarization and Spread of Misinformation
Manoel Horta Ribeiro, Pedro H. Calais, Virgílio A. F. Almeida +1
An important challenge in the process of tracking and detecting the dissemination of misinformation is to understand the political gap between people that engage with the so called…
Complexity-Aware Assignment of Latent Values in Discriminative Models for Accurate Gesture Recognition
Manoel Horta Ribeiro, Bruno Teixeira, Antônio Otávio Fernandes +2
Many of the state-of-the-art algorithms for gesture recognition are based on Conditional Random Fields (CRFs). Successful approaches, such as the Latent-Dynamic CRFs, extend the CR…
Portinari: A Data Exploration Tool to Personalize Cervical Cancer Screening
Sagar Sen, Manoel Horta Ribeiro, Raquel C. de Melo Minardi +2
Socio-technical systems play an important role in public health screening programs to prevent cancer. Cervical cancer incidence has significantly decreased in countries that develo…