Web, Data and Knowledge Engineering Sector Director: Nick Bassiliades Intelligent Systems Laboratory Director: Ioannis Vlahavas Members Nick Bassiliades Ioannis Vlahavas Grigorios Tsoumakas George Meditskos Dimitrios Vrakas Data and Web Science Lab Director: Athena Vakali Members Anastasios Gounaris Athena Vakali Apostolos Papadopoulos