%0 Book Section %B Database and Expert Systems Applications %D 2015 %T Partial Order Preserving Encryption Search Trees %A Ispoglou, Kyriakos %A Makris, Christos %A Stamatiou, Yannis C %A Elias C. Stavropoulos %A Tsakalidis, Athanasios K %A Iosifidis, Vasileios %B Database and Expert Systems Applications %I Springer International Publishing %P 49–56 %G eng %0 Book Section %B Database and Expert Systems Applications %D 2014 %T Reducing Redundant Information in Search Results Employing Approximation Algorithms %A Makris, Christos %A Plegas, Yannis %A Stamatiou, Yannis C %A Elias C. Stavropoulos %A Tsakalidis, Athanasios K %B Database and Expert Systems Applications %I Springer International Publishing %P 240–247 %G eng %0 Generic %D 2008 %T 4η Ημερίδα Παρουσίασης Δραστηριοτήτων Έρευνας και Ανάπτυξης του Ε.Ε.Υ.Ε.Μ %A Tsakalidis, Athanasios K %A Achilles Kameas %A Kaporis, Alexis C %G eng