Social media services represent freely-accessible social networks allowing registered members to broadcast short posts referring to a potentially-unlimited range of topics, by also exploiting the immediateness of handy smart devices. This workshop ...

To gain insights into labor demands or supply, researchers and policymakers have traditionally relied on interviews, trade publications, surveys, and vacancies. Although such traditional data sources have some clear advantages, they are also ...

ABIS 2019 is an international workshop, organized by the SIG on Adaptivity and User Modeling of the German Gesellschaft für Informatik. For more than 20 years, the ABIS Workshop has been a highly interactive forum for discussing the state of the art in ...

In this paper, we make our first attempt to address this issue by proposing a new research problem to identify a group of users from the OSN, such that the group is a socially tight community and the users' willingness of data contribution is maximized. ...

On many photo-sharing social media, e.g., Instagram, a user posting a photo can add tags, i.e., words describing it. Tags are used for keyword-based image search. Some tags, however, describe not image contents but some metadata, e.g., camera names. We ...

Religious Hate speech poses grave dangers for the cohesion of a democratic society, the protection of human rights and the rule of law. While previous work has shown that linguistic features can be effectively used for text categorization in Arabic, ...

Video game and interactive media are currently among the most profitable industries in the world. In this competitive marketing, game producers are interested in designing products with aspects that increase user acceptance, such as a well written story,...

Facebook research has proliferated during recent years. However, Facebook has introduced a new limitation on the maximum amount of page posts retrievable through the Graph API in November 2017 while there is limited documentation on how these posts are ...

This short paper summarizes a new interpretation of the original vision of hypertext: infrastructure-agnostic hypertext is independent from specific formats and protocols. References to existing technologies for implementations are included ...

People all over the world talk as events unfold, but what does it take for a machine to truly track an event? Event TimeLine Detection (ELD) is a real-time Topic Detection and Tracking (TDT) solution to track events using Twitter with the hypothesis ...

Textbooks are educational documents created, structured and formatted in a way that facilitates understanding. Most digital textbooks are released as mere digital copies of their printed counterparts. We present a mechanism that extracts knowledge ...

In an increasingly information-dense web, how do we ensure that we do not fall for unreliable information? To design better web literacy practices for assessing online information, we need to understand how people perceive the credibility of unfamiliar ...

News story understanding entails having an effective summary of a related group of articles that may span different time ranges, involve different topics and entities, and have connections to other stories. In this work, we present an approach to ...

The engagement of citizens in the research projects, including Digital Humanities projects, has risen in prominence in recent years. This type of engagement not only leads to incidental learning of participants but also indicates the added value of ...

Fifty years since the beginning of the Internet, and three decades of the Dexter Hypertext Reference Model and the World Wide Web mark an opportune time to take stock and consider how hypermedia has developed, and in which direction it might be headed. ...

Datasets to study the temporal evolution of graphs are scarce. To encourage the research of novel dynamic graph learning algorithms we introduce YoutubeGraph-Dyn (available at https://github.com/palash1992/YoutubeGraph-Dyn), an evolving graph dataset ...

Online news sources have transformed civic discourse, and much has been made of their credibility. Although web page credibility has been investigated generally, most work has focused on the credibility of web page content. In this work, we study the ...

The social news aggregator Reddit is among the most popular websites on the internet. Many online users use the platform to anonymously share and discuss (mostly US-centric) political content. In this ongoing work, we perform a comparative large-scale ...

This paper proposes an approach on Facebook search in Arabic, which exploits several users' traces (e.g. comment, share, reactions) left on Facebook posts to estimate their social importance. Our goal is to show how these social traces (signals) can ...

Ranking plays a central role in a large number of applications driven by RDF knowledge graphs. Over the last years, many popular RDF knowledge graphs have grown so large that rankings for the facts they contain cannot be computed directly using the ...