@INPROCEEDINGS{Pythia2015, 
  author={George Drosatos and Pavlos S. Efraimidis and Avi Arampatzis and Giorgos Stamatelatos and Ioannis N. Athanasiadis}, 
  booktitle={39th Annual IEEE Computers, Software and Applications Conference (COMPSAC 2015)}, 
  title={Pythia: A Privacy-enhanced Personalized Contextual Suggestion System for Tourism}, 
  year={2015}, 
  month={july}, 
  location = {Taichung, Taiwan},
  pages = {822-827},
  publisher = {IEEE Computer Society},
  doi={10.1109/COMPSAC.2015.88},
  ISSN={0730-3157/15}
}