Yannis E. Ioannidis Maria Vayanou Thodoris Georgiou Katerina Iatropoulou Manos Karvounis Vivi Katifori Marialena Kyriakidi Natalia Manola Alexandros Mouzakidis Lefteris Stamatogiannakis Mei Li Triantafyllidi Profiling Attitudes for Personalized Information Provision 35-40 2011 34 IEEE Data Eng. Bull. 2 http://sites.computer.org/debull/A11june/Yannis.pdf db/journals/debu/debu34.html#IoannidisKKKMV11