@INPROCEEDINGS{6417342, author={P. Andreou and P. Germanakos and A. Konstantinidis and D. Georgiadis and M. Belk and G. Samaras}, booktitle={2012 IEEE 15th International Conference on Computational Science and Engineering}, title={USN: An Optimization Framework for User-centric Social Networks}, year={2012}, pages={562-569}, keywords={optimisation;query processing;social networking (online);user interfaces;USN;multi-objective optimization;query dissemination/acquisition process;social data;social network portals;system-oriented conflicting objectives;user query;user-centric social networks;Decision making;Mobile communication;Navigation;Optimization;Portals;Social network services;Usability;multi-objective optimization;query proecessing;smartphone networks;user profiles}, doi={10.1109/ICCSE.2012.83}, month={Dec},}