376 citations · 1k across the 35 of their papers we have counts for
18 papers · 1 filter
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…
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…
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…
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…
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…
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…
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…
Linguistic Diversities of Demographic Groups in Twitter
Pantelis Vikatos, Johnnatan Messias, Manoel Miranda +1
The massive popularity of online social media provides a unique opportunity for researchers to study the linguistic characteristics and patterns of user's interactions. In this pap…
Who Makes Trends? Understanding Demographic Biases in Crowdsourced Recommendations
Abhijnan Chakraborty, Johnnatan Messias, Fabricio Benevenuto +3
Users of social media sites like Facebook and Twitter rely on crowdsourced content recommendation systems (e.g., Trending Topics) to retrieve important and useful information. Cont…
The Emergence of Crowdsourcing among Pokémon Go Players
Priscila Martins, Manoel Miranda, Fabrício Benevenuto +1
Since its launching, Pok{é}mon Go has been pointed as the largest gaming phenomenon of the smartphone age. As the game requires the user to walk in the real world to see and captur…
From Migration Corridors to Clusters: The Value of Google+ Data for Migration Studies
Johnnatan Messias, Fabricio Benevenuto, Ingmar Weber +1
Recently, there have been considerable efforts to use online data to investigate international migration. These efforts show that Web data are valuable for estimating migration rat…
Analyzing the Targets of Hate in Online Social Media
Leandro Silva, Mainack Mondal, Denzil Correa +2
Social media systems allow Internet users a congenial platform to freely express their thoughts and opinions. Although this property represents incredible and unique communication…
The H-index Paradox: Your Coauthors Have a Higher H-index than You Do
Fabrício Benevenuto, Alberto H. F. Laender, Bruno L. Alves
One interesting phenomenon that emerges from the typical structure of social networks is the friendship paradox. It states that your friends have on average more friends than you d…
TrendLearner: Early Prediction of Popularity Trends of User Generated Content
Flavio Figueiredo, Jussara M. Almeida, Marcos André Gonçalves +1
We here focus on the problem of predicting the popularity trend of user generated content (UGC) as early as possible. Taking YouTube videos as case study, we propose a novel two-st…
On the Dynamics of Social Media Popularity: A YouTube Case Study
Flavio Figueiredo, Jussara M. Almeida, Marcos André Gonçalves +1
Understanding the factors that impact the popularity dynamics of social media can drive the design of effective information services, besides providing valuable insights to content…
PANAS-t: A Pychometric Scale for Measuring Sentiments on Twitter
Pollyanna Gonçalves, Fabrício Benevenuto, Meeyoung Cha
Online social networks have become a major communication platform, where people share their thoughts and opinions about any topic real-time. The short text updates people post in t…