Browsing Τμήμα Πληροφορικής / Department of Computer Science by Author "Markatos, Evangelos P."

Now showing items 1-5 of 5

    • Article  

      Failure management in Grids: The case of the EGEE infrastructure 

      Neocleous, Kyriacos; Dikaiakos, Marios D.; Fragopoulou, Paraskevi; Markatos, Evangelos P. (2007)
      The emergence of Grid infrastructures like EGEE has enabled the deployment of large-scale computational experiments that address challenging scientific problems in various fields. However, to realize their full potential, ...
    • Conference Object  

      A feedback-based approach to reduce duplicate messages in unstructured peer-to-peer networks 

      Papadakis, Charis; Fragopoulou, Paraskevi; Markatos, Evangelos P.; Athanasopoulos, Elias; Dikaiakos, Marios D.; Labrinidis, Alexandros (Springer Science and Business Media, LLC, 2007)
      Resource location in unstructured P2P systems is mainly performed by having each node forward each incoming query message to all of its neighbors, a process called flooding. Although this algorithm has excellent response ...
    • Article  

      Hash-based overlay partitioning in unstructured peer-to-peer systems 

      Papadakis, Charis; Fragopoulou, Paraskevi; Markatos, Evangelos P.; Dikaiakos, Marios D.; Labrinidis, Alexandros (2009)
      Unstructured peer-to-peer (P2P) networks suffer from the increased volume of traffic produced by flooding. Methods such as random walks or dynamic querying managed to limit the traffic at the cost of reduced network coverage. ...
    • Conference Object  

      Where's Wally? How to Privately Discover your Friends on the Internet 

      Papadopoulos, Panagiotis; Chariton, Antonios A.; Athanasopoulos, Elias; Markatos, Evangelos P. (Association for Computing Machinery, 2018)
      Internet friends who would like to connect with each other (e.g., VoIP, chat) use point-to-point communication applications such as Skype or WhatsApp. Apart from providing the necessary communication channel, these ...
    • Conference Object  

      Øpass: Zero-storage Password Management Based on Password Reminders 

      Tzagarakis, Giannis; Papadopoulos, Panagiotis; Chariton, Antonios A.; Athanasopoulos, Elias; Markatos, Evangelos P. (Association for Computing Machinery, 2018)
      A plethora of Internet services and applications require user authentication. Although many alternatives have been proposed, and despite the significant advancement in attackers' capabilities to perform password cracking, ...