Iouliana Litou

Athens University of Economics and Business | AUEB · Department of Computer Science

Online Social Networks (OSNs) are being extensively used in a variety of campaigns, with the objective to raise the awareness of the audience regarding a specific piece of information, e.g, product awareness, political positions, etc. An important characteristic is the correlations of different strength and types, i.e., either positive or negative,...

Online Social Networks (OSNs) constitute one of the most important communication channels and are widely utilized as news sources. Information spreads widely and rapidly in OSNs through the word-of-mouth effect. However, it is not uncommon for misinformation to propagate in the network. Misinformation dissemination may lead to undesirable effects,...

The flourish of Web-based Online Social Networks (OSNs) has led to numerous applications that exploit social relationships to boost the influence of content in the network. However, existing approaches focus on the social ties and ignore how the topic of a post and its structure relate to its popularity. Our work assists in filling this gap. The co...

Online Social Networks (OSNs) have become increasingly popular means of information sharing among users. The spread of news regarding emergency events is common in OSNs and so is the spread of misinformation related to the event. We define as misinformation any false or inaccurate information that is spread either intentionally or unintentionally....

Location-based social networks have evolved into powerful tools in recent years. The ability to embed location information in Social Networks such as Facebook, Foursquare and Twitter creates exciting opportunities for users to disseminate and exchange geolocation information in a variety of domains. The problem of exploiting the social ties between...

In the recent years social networks have undergone explosive growth. They have been used as major tools for the spread of information, ideas and notifications among the members of the network. In this paper we aim at exploiting this new communication channel for emergency notification, to deliver emergency information to all appropriate recipients....

The proliferation of sensor networks, smartphone devices and social networking in the recent years have made it possible to use these technologies to monitor relationships established among humans in order to understand and capture social dynamics for assistive living and healthcare support. This evolution is now driven by participatory sensing sys...