by Ranieri Baraglia, Patrizio Dazzi, Matteo Mordacchini and Laura Ricci

ATLAAS-P2P is a two-layered peer-to-peer (P2P) architecture for developing systems, providing resource aggregation and approximated discovery in P2P networks. It gives users a flexible and easy means of searching for resources and also benefits resource providers by assisting users to find them.

by Patrizio Dazzi and Emanuele Carlini

Since the late ‘nineties, peer-to-peer (P2P) protocols have become increasingly popular. Traditionally, these systems have been used to implement widely distributed applications, such as file-sharing services, as they provide efficient support for the discovery and distribution of information.

by Kostas Stefanidis and Kjetil Nørvåg

gRecs is a research prototype system designed for providing suggestions to groups of users about items of potential interest. In particular, gRecs proposes an extensive model for group recommendations based on recommendations for items liked by similar users to the group members. This is achieved with the use of data mining techniques. More specifically, since the main bottleneck is to identify the most similar users to a given one, we model the user-item interactions in terms of clustering and use the extracted clusters for predictions.

by Ton Engbersen

The worldwide community of Radio-Astronomy has envisioned building a very large, highly sensitive radio telescope partly in South Africa and partly in Australia by 2020. The total effective area of this radio telescope should approach one square kilometer and therefore it is called the Square Kilometre Array (SKA). The SKA instrument is expected to generate Exabytes of data per day which need to be processed and reduced, such that approximately 1 Petabyte per day is left to be stored for later use by Radio Astronomers.

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