129 citations · 396 across the 14 of their papers we have counts for
16 papers
Assessing the Impact of Music Recommendation Diversity on Listeners: A Longitudinal Study
Lorenzo Porcaro, Emilia Gómez, Carlos Castillo
We present the results of a 12-week longitudinal user study wherein the participants, 110 subjects from Southern Europe, received on a daily basis Electronic Music (EM) diversified…
SciLander: Mapping the Scientific News Landscape
Maurício Gruppi, Panayiotis Smeros, Sibel Adalı +2
The COVID-19 pandemic has fueled the spread of misinformation on social media and the Web as a whole. The phenomenon dubbed `infodemic' has taken the challenges of information vera…
Cross-Lingual Query-Based Summarization of Crisis-Related Social Media: An Abstractive Approach Using Transformers
Fedor Vitiugin, Carlos Castillo
Relevant and timely information collected from social media during crises can be an invaluable resource for emergency management. However, extracting this information remains a cha…
Social Media Alerts can Improve, but not Replace Hydrological Models for Forecasting Floods
Valerio Lorini, Carlos Castillo, Domenico Nappo +2
Social media can be used for disaster risk reduction as a complement to traditional information sources, and the literature has suggested numerous ways to achieve this. In the case…
Uneven Coverage of Natural Disasters in Wikipedia: the Case of Flood
Valerio Lorini, Javier Rando, Diego Saez-Trumper +1
The usage of non-authoritative data for disaster management presents the opportunity of accessing timely information that might not be available through other means, as well as the…
Modeling Islamist Extremist Communications on Social Media using Contextual Dimensions: Religion, Ideology, and Hate
Ugur Kursuncu, Manas Gaur, Carlos Castillo +6
Terror attacks have been linked in part to online extremist content. Although tens of thousands of Islamist extremism supporters consume such content, they are a small fraction rel…
Integrating Social Media into a Pan-European Flood Awareness System: A Multilingual Approach
V. Lorini, C. Castillo, F. Dottori +3
This paper describes a prototype system that integrates social media analysis into the European Flood Awareness System (EFAS). This integration allows the collection of social medi…
The Effect of Extremist Violence on Hateful Speech Online
Alexandra Olteanu, Carlos Castillo, Jeremy Boy +1
User-generated content online is shaped by many factors, including endogenous elements such as platform affordances and norms, as well as exogenous elements, in particular signific…
A Robust Framework for Classifying Evolving Document Streams in an Expert-Machine-Crowd Setting
Muhammad Imran, Sanjay Chawla, Carlos Castillo
An emerging challenge in the online classification of social media data streams is to keep the categories used for classification up-to-date. In this paper, we propose an innovativ…
Enabling Digital Health by Automatic Classification of Short Messages
Muhammad Imran, Patrick Meier, Carlos Castillo +2
In response to the growing HIV/AIDS and other health-related issues, UNICEF through their U-Report platform receives thousands of messages (SMS) every day to provide prevention str…
Controversy and Sentiment in Online News
Yelena Mejova, Amy X. Zhang, Nicholas Diakopoulos +1
How do news sources tackle controversial issues? In this work, we take a data-driven approach to understand how controversy interplays with emotional expression and biased language…
Processing Social Media Messages in Mass Emergency: A Survey
Muhammad Imran, Carlos Castillo, Fernando Diaz +1
Social media platforms provide active communication channels during mass convergence and emergency events such as disasters caused by natural hazards. As a result, first responders…
TweetCred: Real-Time Credibility Assessment of Content on Twitter
Aditi Gupta, Ponnurangam Kumaraguru, Carlos Castillo +1
During sudden onset crisis events, the presence of spam, rumors and fake content on Twitter reduces the value of information contained on its messages (or "tweets"). A possible sol…
Says who? Automatic Text-Based Content Analysis of Television News
Carlos Castillo, Gianmarco De Francisci Morales, Marcelo Mendoza +1
We perform an automatic analysis of television news programs, based on the closed captions that accompany them. Specifically, we collect all the news broadcasted in over 140 televi…
Characterizing the Life Cycle of Online News Stories Using Social Media Reactions
Carlos Castillo, Mohammed El-Haddad, Jürgen Pfeffer +1
This paper presents a study of the life cycle of news articles posted online. We describe the interplay between website visitation patterns and social media reactions to news conte…
The Role of Information Diffusion in the Evolution of Social Networks
Lilian Weng, Jacob Ratkiewicz, Nicola Perra +6
Every day millions of users are connected through online social networks, generating a rich trove of data that allows us to study the mechanisms behind human interactions. Triadic…