Citizenship

·        Associate Editor for the IET Smart Cities Journal

·        Editorial Review Board Member for the Int’l Journal of Information Retrieval Research

·        Program Co-Chair and Editor for the Proc. 12th Conference on Software Maintenance and Reengineering (CSMR 2008).

·        Session organiser in Machine Learning and Data Mining at the 5th Technology Forum

·        Scientific Coordinator for an event on "The power of Big Data Analytics".

·        Industrial Chair at CSMR 2011

·        Program Chair for the 3rd Int'l Workshop on "System Quality and Maintainability" (SQM 09).

·        Chair of a special session for the IEEE 11th Conference on Software Maintenance and Reengineering (CSMR 2007) on System Quality and Maintainability.

·        Chair of a session at the 2nd SOSoRNet workshop.

·        Organizer of the 1st SOSoRNet workshop and co-organizer of the joint event on Service-enabled Collaborative Enterprises

·        Executive committee member and Chair of the Doctoral Symposium at IEEE CSMR 05.

·        General Chair of the 4th Pennine Research Forum.

·        Organising Committee member for the IEEE IS 06.

·        Program Committee member for:

o        IEEE COMPSAC 03 and COMPSAC 04

o        IEEE IWPC 04, IEEE IDEAL 04

o        IBIMA 06, IEEE WCCI 08 (IJCNN 08, FUZZ-IEEE 08 and the IEEE CEC 08)

o        AISEW 08, AISEW 09, SQM 08, SQM 10 and SQM 11

o        KDIR 2009, KDIR 10  and KDIR 2011

o        IASTED SEA 05, SEA 06, SEA 07, SEA 08, SEA 09, SEA 10 and SEA 11

o        IASTED SE 05, SE 06, SE 07, SE 08, SE 09, SE 10, SE 11 and SE 12

o        ICSI 10, ICSI 11, ICSI 12 , ICSI 16 and ICSI 17

o       CSMR 09, CSMR 10, CSMR 11, CSMR 12 and CSMR 13

o       IEEE KASET 2007, PROFES 11, ΙΕΕΕ SIS 2011, JIMSE 12 ICICIP 10 and ICICIP 15

o        IEEE CIS 05, CIS 06, CIS 07, CIS 08, CIS 09, CIS 10, CIS 11, CIS 12, CIS 13, CIS 15 and CIS 17

o        IEEE ISNN 06, ISNN 07, ISNN 08, ISNN 09, ISNN 10, ISNN 11, ISNN 12, ISNN 14, ISNN 15, ISNN 16, ISNN 17 and ISNN 18.

o        WCICA 16, DMBD 16, WorldCist'16, WorldCIST 17, BIC-TA 15, BIC-TA 17, HiPIS 2017, IWCSN 2017, ICIST 15 and ICIST 18, SETN 16, ICACI 15, ICACI 17 and ICACI 18, IEEE AIVR 18.

o       AAAI 19 and 20 AAMAS 18, 19, IJCAI-ECAI 18, IJCAI 19,  ICMLA 19

·        Invited speaker at Disruptive Technologies, Law and Economy

·        Invited speaker at the NCAF workshop on Analysis of Multimodal and High-Dimensional Data

·        Invited speaker at AISEW 08.

·        Former Member of the DTI sponsored UK Data Storage Network

·        Member of the Technical Chamber Of Greece

·        Former Vice-Chair, Special Secretary, and member of the Governing Board of the Hellenic Artificial Intelligence Society (EETN)

He acts as a reviewer for journals including the IEEE Transactions on Computers, Journal of Data & Knowledge Engineering, ACM Transactions on Autonomous and Adaptive Systems, International Journal on Artificial Intelligence Tools, Science of Computer Programming, Journal of Software Maintenance and Evolution, Journal of Empirical Software Engineering, Automated Software Engineering Journal, Software Quality Journal, IEEE Transactions on Systems, Man, and Cybernetics-Part C, Journal of Mathematical Modelling and Algorithms, Journal of Computer Science and Technology, Int'l Journal of Web Engineering and Technology, the IEE Software journal, and Computers & Education. He has also acted as a reviewer for Int'l Conferences including IEEE ICSM, IEEE APSEC, IEEE STEP, IEEE IIT, Europar, AMCIS, and PCI.

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