@conference {545,
	title = {Data Science Tutor: An online platform for automated exercise solving in Data Science},
	booktitle = {Proceedings of the 9th Conference on Computer Science Teaching (DIDINFO)},
	year = {2018},
	month = {October},
	address = {Thessaloniki, Greece},
	author = {Christos Tryfonopoulos and Charis Kotsiopoulos and Paraskevi Raftopoulou}
}
@article {582,
	title = {Distributed Large-Scale Information Filtering},
	journal = {Transactions on Large-Scale Data- and Knowledge-Centered Systems (TLDKS)},
	volume = {13},
	year = {2014},
	pages = {91{\textendash}122},
	abstract = {We study the problem of distributed resource sharing in peer-to-peer networks and focus on the problem of information filter- ing. In our setting, subscriptions and publications are specified using an expressive attribute-value representation that supports both the Boolean and Vector Space models. We use an extension of the distributed hash table Chord to organise the nodes and store user subscriptions, and utilise efficient publication protocols that keep the network traffic and latency low at filtering time. To verify our approach, we evaluate the proposed protocols experimentally using thousands of nodes, millions of user subscriptions, and two different real-life corpora. We also study three important facets of the load-balancing problem in such a scenario and present a novel algorithm that manages to distribute the load evenly among the nodes. Our results show that the designed protocols are scalable and efficient: they achieve expressive information filtering functionality with low message traffic and latency.},
	keywords = {distributed hash tables, Information management, publish/subscribe},
	author = {Christos Tryfonopoulos and Stratos Idreos and Manolis Koubarakis and Paraskevi Raftopoulou}
}
@conference {550,
	title = {DS4: A Distributed Social and Semantic Search System},
	booktitle = {Proceedings of 35th European Conference on Information Retrieval (ECIR)},
	year = {2013},
	month = {March},
	address = {Moscow, Russia},
	author = {Dionisis Kontominas and Paraskevi Raftopoulou and Christos Tryfonopoulos and E.G.M. Petrakis}
}
@conference {539,
	title = {DS4: Introducing Semantic Friendship in Distributed Social Networks.},
	booktitle = {Proceedings of the 21st International Conference on Cooperative Information Systems (CoopIS)},
	year = {2013},
	month = {September},
	address = {Graz, Austria},
	author = {Paraskevi Raftopoulou and Christos Tryfonopoulos and E.G.M. Petrakis and Nikos Zevlis}
}
@conference {559,
	title = {Distributed Evaluation of Continuous Equi-join Queries over Large Structured Overlay Networks},
	booktitle = {Proceedings of the 22nd International Conference on Data Engineering (ICDE)},
	year = {2006},
	month = {April},
	address = {Atlanda, USA},
	author = {Stratos Idreos and Christos Tryfonopoulos and Manolis Koubarakis}
}
@conference {571,
	title = {Distributed Resource Sharing using Self-Organized Peer-to-Peer Networks and Languages from Information Retrieval},
	booktitle = {Proceedings of the International Workshop on Self-* Properties in Complex Information Systems (Self-*)},
	year = {2004},
	month = {May},
	address = {Bertinoro, Italy},
	author = {Christos Tryfonopoulos and Manolis Koubarakis}
}
@conference {536,
	title = {Data Models and Languages for Agent-Based Textual Information Dissemination},
	booktitle = {Proceedings of the 6th International Workshop on Cooperative Information Agents (CIA)},
	year = {2002},
	month = {September},
	publisher = {Springer},
	organization = {Springer},
	address = {Madrid, Spain},
	author = {Manolis Koubarakis and Christos Tryfonopoulos and Paraskevi Raftopoulou and Theodoros Koutris}
}
