Online Social Networks and Media University of Ioannina Computer Science Department Fall 2017

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Administrative Course Code:Λ14 Instructors: Evaggelia Pitoura, Panayiotis Tsaparas Time: Wednesday 2:00-5:00 pm. Lecture Room: B2 Overview The course covers different issues around different types of networks in life and technology. We will study the theory behind the formation and properties of such networks, processes on networks, algorithms that make use of the network, and tools for analyzing them. For more information you can take a look at the web pages of the course in the previous years. Course Homework The course homework consists of assignments, a presentation and a project. The final grade will be determined 30% by the assignments, 20% by the presentation, and 50% by the project. Announcements � March 1: The grades for the course are here. � December 11: The project assignment is on the Homework page. � December 5: A clarification for the third question of the second Assignment: You are given a set of tweets by a population of Twitter users T (this population is defined by the union of ids and handles in the first three columns of the file). Using this data you will create a graph of who-retweets-who. The final graph you will work with should contain only nodes in the population T. If a user X retweets a tweet of user Y, but Y is not one of the users in T ((s)he has not posted a tweet, that is, the handle of Y does not appear in the first or second column in the file), then user Y and all of the edges involving Y will not be included in the graph. � November 17: The second assignment is available in the Homework page of the course. � October 26: The first assignment is available in the Homework page of the course.