Parcourir par auteur "Anagnostopoulos, C."
Voici les éléments 1-5 de 5
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Autoregressive energy-efficient context forwarding in wireless sensor networks for pervasive healthcare systems
Anagnostopoulos, C.; Hadjiefthymiades, S.; Katsikis, A.; Maglogiannis, I. (2014)Driven by technological advances in low-power network systems and medical sensors, we have witnessed during the recent years the adoption of wireless sensor networks (WSNs) in electronic healthcare. Improving the quality ... -
An efficient Recommendation System based on the Optimal Stopping Theory
Kolomvatsos, K.; Anagnostopoulos, C.; Hadjiefthymiades, S. (2014)A Recommendation System (RS) aims to deliver meaningful recommendations to users for items (e.g., music and books), which are of high interest to them. We consider an RS which directly communicates with a set of providers ... -
Optimizing pervasive sensor data acquisition utilizing missing values substitution
Michalopoulos, M.; Maglogiannis, I.; Anagnostopoulos, C.; Doukas, C.; Hadjiefthymiades, S. (2010)Acquisition of pervasive sensor data can be often unsuccessful due to power outage at nodes, time synchronization issues, interference, network transmission failures or sensor hardware issues. Such failures can lead to ... -
A time optimized scheme for top-k list maintenance over incomplete data streams
Kolomvatsos, K.; Anagnostopoulos, C.; Hadjiefthymiades, S. (2015)A large number of contemporary research efforts focus on incomplete data streams handling. These efforts, usually, focus on the creation and maintenance of top-k lists useful to provide efficient responses to top-k queries. ... -
Time-optimized user grouping in Location Based Services
Anagnostopoulos, C.; Hadjiefthymiades, S.; Kolomvatsos, K. (2015)We focus on Location Based Services (LBSs) which deliver information to groups of mobile users based on their spatial context. The existence (and non-trivial lifetime) of groups of mobile users can simplify the operation ...