376 citations · 1k across the 35 of their papers we have counts for
39 papers
Finding Fake News Websites in the Wild
Leandro Araujo, Joao M. M. Couto, Luiz Felipe Nery +4
The battle against the spread of misinformation on the Internet is a daunting task faced by modern society. Fake news content is primarily distributed through digital platforms, wi…
A Comprehensive View of the Biases of Toxicity and Sentiment Analysis Methods Towards Utterances with African American English Expressions
Guilherme H. Resende, Luiz F. Nery, Fabrício Benevenuto +2
Language is a dynamic aspect of our culture that changes when expressed in different technologies/communities. Online social networks have enabled the diffusion and evolution of di…
Helping Fact-Checkers Identify Fake News Stories Shared through Images on WhatsApp
Julio C. S. Reis, Philipe Melo, Fabiano Belém +3
WhatsApp has introduced a novel avenue for smartphone users to engage with and disseminate news stories. The convenience of forming interest-based groups and seamlessly sharing con…
YouNICon: YouTube's CommuNIty of Conspiracy Videos
Shaoyi Liaw, Fan Huang, Fabricio Benevenuto +2
Conspiracy theories are widely propagated on social media. Among various social media services, YouTube is one of the most influential sources of news and entertainment. This paper…
Predicting Sentence-Level Factuality of News and Bias of Media Outlets
Francielle Vargas, Kokil Jaidka, Thiago A. S. Pardo +1
Automated news credibility and fact-checking at scale require accurately predicting news factuality and media bias. This paper introduces a large sentence-level dataset, titled "Fa…
Telegram Monitor: Monitoring Brazilian Political Groups and Channels on Telegram
Manoel Júnior, Philipe Melo, Daniel Kansaon +3
Instant messaging platforms such as Telegram became one of the main means of communication used by people all over the world. Most of them are home of several groups and channels t…
Can online attention signals help fact-checkers fact-check?
Manoel Horta Ribeiro, Savvas Zannettou, Oana Goga +2
Recent research suggests that not all fact-checking efforts are equal: when and what is fact-checked plays a pivotal role in effectively correcting misconceptions. In that context,…
On the Globalization of the QAnon Conspiracy Theory Through Telegram
Mohamad Hoseini, Philipe Melo, Fabricio Benevenuto +2
QAnon is a far-right conspiracy theory that became popular and mainstream over the past few years. Worryingly, the QAnon conspiracy theory has implications in the real world, with…
Contextual-Lexicon Approach for Abusive Language Detection
Francielle Vargas, Fabiana Rodrigues de Góes, Isabelle Carvalho +2
Since a lexicon-based approach is more elegant scientifically, explaining the solution components and being easier to generalize to other applications, this paper provides a new ap…
HateBR: A Large Expert Annotated Corpus of Brazilian Instagram Comments for Offensive Language and Hate Speech Detection
Francielle Alves Vargas, Isabelle Carvalho, Fabiana Rodrigues de Góes +2
Due to the severity of the social media offensive and hateful comments in Brazil, and the lack of research in Portuguese, this paper provides the first large-scale expert annotated…
Characterizing (Un)moderated Textual Data in Social Systems
Lucas Henrique Costa de Lima, Julio Reis, Philipe Melo +2
Despite the valuable social interactions that online media promote, these systems provide space for speech that would be potentially detrimental to different groups of people. The…
Can WhatsApp Benefit from Debunked Fact-Checked Stories to Reduce Misinformation?
Julio C. S. Reis, Philipe de Freitas Melo, Kiran Garimella +1
WhatsApp was alleged to be widely used to spread misinformation and propaganda during elections in Brazil and India. Due to the private encrypted nature of the messages on WhatsApp…
How Biased is the Population of Facebook Users? Comparing the Demographics of Facebook Users with Census Data to Generate Correction Factors
Filipe N. Ribeiro, Fabrício Benevenuto, Emilio Zagheni
Censuses around the world are key sources of data to guide government investments and public policies. However, these sources are very expensive to obtain and are collected relativ…
Neutrality May Matter: Sentiment Analysis in Reviews of Airbnb, Booking, and Couchsurfing in Brazil and USA
Gustavo Santos, Vinicius F. S. Mota, Fabricio Benevenuto +1
Information and communications technologies have enabled the rise of the phenomenon named sharing economy, which represents activities between people, coordinated by online platfor…
A Dataset of Fact-Checked Images Shared on WhatsApp During the Brazilian and Indian Elections
Julio C. S. Reis, Philipe de Freitas Melo, Kiran Garimella +3
Recently, messaging applications, such as WhatsApp, have been reportedly abused by misinformation campaigns, especially in Brazil and India. A notable form of abuse in WhatsApp rel…
Facebook Ads Monitor: An Independent Auditing System for Political Ads on Facebook
Márcio Silva, Lucas Santos de Oliveira, Athanasios Andreou +3
The 2016 United States presidential election was marked by the abuse of targeted advertising on Facebook. Concerned with the risk of the same kind of abuse to happen in the 2018 Br…
Can WhatsApp Counter Misinformation by Limiting Message Forwarding?
Philipe de Freitas Melo, Carolina Coimbra Vieira, Kiran Garimella +2
WhatsApp is the most popular messaging app in the world. The closed nature of the app, in addition to the ease of transferring multimedia and sharing information to large-scale gro…
On Microtargeting Socially Divisive Ads: A Case Study of Russia-Linked Ad Campaigns on Facebook
Filipe N. Ribeiro, Koustuv Saha, Mahmoudreza Babaei +6
Targeted advertising is meant to improve the efficiency of matching advertisers to their customers. However, targeted advertising can also be abused by malicious advertisers to eff…
Inside the Right-Leaning Echo Chambers: Characterizing Gab, an Unmoderated Social System
Lucas Lima, Julio C. S. Reis, Philipe Melo +4
The moderation of content in many social media systems, such as Twitter and Facebook, motivated the emergence of a new social network system that promotes free speech, named Gab. S…
Building the Brazilian Academic Genealogy Tree
Wellington Dores, Elias Soares, Fabrício Benevenuto +1
Along the history, many researchers provided remarkable contributions to science, not only advancing knowledge but also in terms of mentoring new scientists. Currently, identifying…
10Sent: A Stable Sentiment Analysis Method Based on the Combination of Off-The-Shelf Approaches
Philipe F. Melo, Daniel H. Dalip, Manoel M. Junior +2
Sentiment analysis has become a very important tool for analysis of social media data. There are several methods developed for this research field, many of them working very differ…
White, Man, and Highly Followed: Gender and Race Inequalities in Twitter
Johnnatan Messias, Pantelis Vikatos, Fabricio Benevenuto
Social media is considered a democratic space in which people connect and interact with each other regardless of their gender, race, or any other demographic factor. Despite numero…
Using Facebook Ads Audiences for Global Lifestyle Disease Surveillance: Promises and Limitations
Matheus Araujo, Yelena Mejova, Ingmar Weber +1
Every day, millions of users reveal their interests on Facebook, which are then monetized via targeted advertisement marketing campaigns. In this paper, we explore the use of demog…
Demographics of News Sharing in the U.S. Twittersphere
Julio C. S. Reis, Haewoon Kwak, Jisun An +2
The widespread adoption and dissemination of online news through social media systems have been revolutionizing many segments of our society and ultimately our daily lives. In thes…