Αρχείο παρουσιάσεων του Euclid Seminar. Το σεμινάριο πραγματοποιείται στο εργαστήριο Τομέα Λογισμικού, Ισόγειο κτιρίου Α.
Πέμπτη, 20 Δεκεμβρίου 2018
- Ομιλητής
- Ανδρέας Σένδρος (Διπλωματική)
- Θέμα
- “An Ethereum Blockchain Dapp for traceability data”
- Περίληψη
- –
Τρίτη, 27 Νοεμβρίου 2018
- 1ος Ομιλητής
- Γεώργιος Σταματελάτος
- Θέμα
- “Deriving the Political Affinity of Twitter Users from Their Followers”
- Περίληψη
- In this work, we show that Twitter users can reveal valuable political information about particular Nodes of Interest (NOIs) they opt to follow. More precisely, we utilize an interesting graph projection method and a series of algorithmic approaches, such as modularity clustering, a minimum linear arrangement (MinLA) approximation algorithm and the DeGroot opinion update model in order to reveal the political affinity of selected NOIs. Our methods, which are purely structure-based, are applied to a snapshot of the Twitter network based on the user accounts of NOIs, consisting of the members of the current Greek Parliament along with their respective followers. The findings confirm that the information obtained can portray with significant precision the political affinity of the NOIs. We, furthermore, argue that these methods are of general interest for imprinting the political leaning of other NOIs, for example news media, and potentially classifying them in respect to their political bias.
- 2ος Ομιλητής
- Ελένη Μπριόλα
- Θέμα
- “Privacy Leakages about Political Beliefs through Analysis of Twitter Followers”
- Περίληψη
- In this paper, we focus on privacy leakages about Twitter users and show that simply establishing follower and friend connections in the Twitter network might be enough to reveal sensitive information about the political beliefs of a user. More precisely, we create a Twitter dataset containing the twitter nodes of Greek news media and politicians, as well as their followers and present two approaches to predict the political beliefs of a Twitter user and the politicians the user will potentially follow. The intuition behind both approaches is the saying “Show me who your friends are, and I will tell you who you are”. In the first approach, the politicians followed by the followers of the user are shown to be correlated to the politicians that the user follows. In the second one, the media that the user follows are used to predict the politicians that the user follows. The experimental results of both approaches confirm our claims and show that significant privacy leakages are possible.
Πέμπτη, 22 Νοεμβρίου 2018
- Ομιλητής
- Ελένη Μπαμπαλή
- Θέμα
- Fake News
- Περίληψη
- –
Πέμπτη, 15 Νοεμβρίου 2018
- Ομιλητής
- Μαγδαλινή Αναστασιάδου
- Θέμα
- Αντικειμενικότητα των ΜΜΕ
- Περίληψη
- Μορφές παραπληροφόρησης και λανθασμένης πληροφόρησης, κατηγορίες μεροληψίας των ΜΜΕ και ιδέες για αλγοριθμικό υπολογισμό της μεροληψίας.
