Social Media (SM) are the most widespread and rapid data generation applications on the
Internet increase the study of these data. However, the efficient processing of such massive …

Abstract Machines powered by artificial intelligence increasingly mediate our social, cultural,
economic and political interactions. Understanding the behaviour of artificial intelligence …

Twitter is the third most popular worldwide Online Social Network (OSN) after Facebook and
Instagram. Compared to other OSNs, it has a simple data model and a straightforward data …

As of March 2021, the SARS-CoV-2 virus has been responsible for over 115 million cases of
COVID-19 worldwide, resulting in over 2.5 million deaths. As the virus spread exponentially …

In recent years, conversational agents (CAs) have become ubiquitous and are a presence in
our daily routines. It seems that the technology has finally ripened to advance the use of CAs …

Cryptocurrencies have become a very popular topic recently, primarily due to their disruptive
potential and reports of unprecedented returns. In addition, academics increasingly …

Objectives. To understand how Twitter bots and trolls (“bots”) promote online health content.
Methods. We compared bots' to average users' rates of vaccine-relevant messages, which …

Policymakers, scholars, and practitioners have all called attention to the issue of
misinformation in the climate change debate. But what is climate change misinformation …

The proliferation of fake news on social media has opened up new directions of research for
timely identification and containment of fake news and mitigation of its widespread impact on …

The massive spread of digital misinformation has been identified as a major threat to
democracies. Communication, cognitive, social, and computer scientists are studying the …