Christos A. Fidas

Welcome

Currently I am an Assistant Professor in the Department of Cultural Heritage Management and New Technologies, University of Patras, and a Research Associate at the HCI Group of the Interactive Systems Laboratory. I received a PhD from the Electrical & Computer Engineering Department, University of Patras.

My research is related with investigating the influence of human aspects in cultural heritage informatics and usable & secure information systems aiming to drive the design and development of bootstrapped solutions to the unique cultural and cognitive characteristics of the end-users.

Email: fidas AT upatras.gr :: LinkedIn Profile: https://www.linkedin.com/in/fidas

Find me also at

Highlights

[Guest Co-Editor - December 2018] I am Guest Co-Editor, together with Dr. Stella Sylaiou, for the Special Issue on ICT for Culture and Tourism at the International Journal of Computational Methods in Heritage Science (IJCMHS). Submission due date: December 20, 2018

[Invited Talk - November 2018] "Human Cognition, Visual Behavior and User Experience in Virtual / Mixed Reality Applications: Case Studies and Interaction Effects", VR@GR: Virtual Reality – Research and Applications in Greece today, held at the Onassis Stegi.

[New Publication - November 2018] Journal paper accepted at User Modeling and User-Adapted Interaction (UMUAI), entitled "A cognition-centered personalization framework for cultural heritage content"

[New Publication - November 2018] Journal paper accepted at ACM Journal on Computing and Cultural Heritage (JOCCH), entitled "Do game designers’ decisions related to visual activities affect knowledge acquisition in cultural heritage games? An evaluation from a human cognitive processing perspective"

[Invited Talk - May 2018] I enjoyed coming back to the University of Cyprus in the context of Erasmus+ Staff Mobility for Teaching Programme. During my stay I had the opportunity to meet my former colleagues and friends and exchange interesting ideas for research. I was also honored to give a talk at the Computer Science Colloquium Series at UCY and give seminars to Ph.D., M.Sc. and B.Sc. students on topics related to information systems, cultural heritage and usable security.

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[New Publication - April 2018] Congrats to Argyris Constantinides for his first regular paper at ACM SIGCHI UMAP 2018 concerning his Ph.D. thesis. The paper is entitled "On Cultural-centered Adaptive Graphical Passwords: Improving Password Memorability based on Users’ Collective Memories". Wishes for many more success.

[New Publication - April 2018] Paper accepted at ACM SIGCHI Eye Tracking Research & Applications (ETRA 2018), entitled "Towards Gaze-Based Quantification of the Security of Graphical Authentication Schemes"

[Invited Talk - March 2018] Invited talk, "Human-Centered Design and Evaluation of Digitized Cultural Heritage Experiences", at the 4th Thematic Seminar on "Digitization of Monuments and Archaeological Sites" in the context of the European Project "Collaborative Digitization of Natural and Cultural Heritage, CD-ETA" of the Programme "INTERREG EUROPE".

[New Publication - February 2018] Journal paper accepted at the International Journal of Human-Computer Studies, entitled "Effects of Mixed-Reality on Players' Behaviour and Immersion in a Cultural Tourism Game: A Cognitive Processing Perspective"

[New Publication - December 2017] Full paper accepted at ACM SIGCHI 2018, entitled "Influences of Human Cognition and Visual Behavior on Password Security during Picture Password Composition"

[New Publication - December 2017] Paper accepted for inclusion in the ACM SIGCHI IUI 2018 Papers' Programme, entitled "Eye Gaze-driven Prediction of Cognitive Differences during Graphical Password Composition"

[New Publication - April 2017] Paper accepted at ACM SIGCHI UMAP 2017, entitled "Using Eye Gaze Data and Visual Activities to Infer Human Cognitive Styles: Method and Feasibility Studies"

[New Publication - September 2016] Paper accepted at ACM SIGCHI CHI Play 2016, entitled "Do Field Dependence-Independence Differences of Game Players Affect Performance and Behaviour in Cultural Heritage Games?"

Patents

German Patent & Trade Mark Office (Deutsches Patent- und Markenamt): Method and apparatus for flexible user authentication based on individual human cognitive characteristics (Methode und vorrichtung zur flexiblen benutzerauthentifizierung basierend auf individuellen menschlichen kognitiven eigenschaften) – patent pending
Greek Industrial Property Organisation (Οργανισμός Βιομηχανικής Ιδιοκτησίας): Methods and tools to support and monitor in real time visitors of the World Wide Web (N. Patent No. 1004805.OVI, INT. CL G06F 17/60, g06f 15/163)

Selected Publications

Information Systems and Culture

Springer UMUAI: Raptis, G., Fidas, C., Avouris, N. (2019). A cognition-centered personalization framework for cultural heritage content, User Modeling and User-Adapted Interaction (UMUAI). The Journal of Personalization Research - SNIP: 6.6, Springer (forthcoming)
ACM JOCCH: Raptis, G., Fidas, C., Avouris, N. (2019). Do game designers’ decisions related to visual activities affect knowledge acquisition in cultural heritage games? An evaluation from a human cognitive processing perspective, ACM Journal on Computing and Cultural Heritage (JOCCH) - Cite Score: 1.62, ACM Press (forthcoming)
Elsevier IJHCS: Raptis, G., Fidas, C.A., Avouris, N. (2018). Effects of mixed-reality on players' behaviour and immersion in a cultural tourism game: A cognitive processing perspective, International Journal of Human-Computer Studies - Cite Score: 3.38, Elsevier, 69-79 [https://doi.org/10.1016/j.ijhcs.2018.02.003]
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ACM MobileHCI 2018: Constantinides, A., Fidas, C., Belk, M., Samaras, G. (2018). On sociocultural-centered graphical passwords: An initial framework, ACM SIGCHI Human-Computer Interaction with Mobile Devices and Services (MobileHCI 2018), ACM Press, 277-284 [https://doi.org/10.1145/3236112.3236150]
ACM UMAP 2018: Constantinides, A., Belk, M., Fidas, C., Samaras, G. (2018). On cultural-centered adaptive graphical passwords: Improving password memorability based on users' collective memories, ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2018), ACM Press, 277-284 [https://doi.org/10.1145/3209219.3209254]
ACM CHI EA 2018: Raptis, G., Fidas, C., Katsini, C., Avouris, N. (2018). Towards a cognition-centered personalization framework for cultural-heritage content, ACM SIGCHI Human Factors in Computing Systems (CHI 2018), ACM Press, paper LBW011 [https://doi.org/10.1145/3170427.3190613]
ACM UMAP 2017: Raptis, G., Fidas, C., Avouris, N. (2018). Cultural heritage gaming: Effects of human cognitive styles on players' performance and visual behavior, ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2017), ACM Press, 343-346 [https://doi.org/10.1145/3099023.3099090]
ACM CHI Play 2016: Raptis, G., Fidas, C., Avouris, N. (2016). Do field dependence-independence differences of game players affect performance and behaviour in cultural heritage games?, ACM SIGCHI Computer-Human Interaction in Play (CHI PLAY 2016), ACM Press, 38-43 [https://doi.org/10.1145/2967934.2968107]
IEEE IISA 2015: Fidas, C., Avouris, N. (2015). Personalization of mobile applications in cultural heritage environments, Information, Intelligence, Systems and Applications (IISA 2015), IEEE, 1-6 [https://doi.org/10.1109/IISA.2015.7388114]
IEEE IISA 2015: Fidas, C., Sintoris, C., Yiannoutsou, N., Avouris, N. (2015). A survey on tools for end user authoring of mobile applications for cultural heritage, Information, Intelligence, Systems and Applications (IISA 2015), IEEE, 1-5 [https://doi.org/10.1109/IISA.2015.7388029]

Eye Tracking, Cognition and User Modeling

ACM ETRA 2018: Katsini, C., Raptis, G., Fidas, C., Avouris, N. (2018). Towards Gaze-Based Quantification of the Security of Graphical Authentication Schemes, ACM SIGCHI Symposium on Eye Tracking Research & Applications (ETRA 2018), ACM Press, [https://doi.org/10.1145/3204493.3204589]
ACM IUI 2018: Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., Avouris, N. (2018). Eye gaze-driven prediction of cognitive differences during graphical password composition. ACM SIGCHI Intelligent User Interfaces (IUI 2018), ACM Press, 147-152 [https://doi.org/10.1145/3172944.3172996]
ACM UMAP 2017: Raptis, G., Katsini, C., Belk, M., Fidas, C., Samaras, G., Avouris, N. (2017). Using eye gaze data and visual activities to infer human cognitive styles: method and feasibility studies, ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2017), ACM Press, 164-173 [https://doi.org/10.1145/3079628.3079690]
ACM CHI 2017: Raptis, G., Fidas, C., Avouris, N. (2017). On implicit elicitation of cognitive strategies using gaze transition entropies in pattern recognition tasks, ACM SIGCHI Human Factors in Computing Systems (CHI EA 2017), ACM Press, 1993-2000 [https://doi.org/10.1145/3027063.3053106]

Usable Security: User Authentication and Human Interaction Proofs

ACM CHI 2018: Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., & Avouris, N. (2018). Influences of human cognition and visual behavior on password security during picture password composition. ACM SIGCHI Human Factors in Computing Systems (CHI 2018), ACM Press, paper 87 [https://doi.org/10.1145/3173574.3173661]
Elsevier CHB: Belk M., Fidas C., Germanakos P., & Samaras G. (2017) The interplay between humans, technology and user authentication: a cognitive processing perspective, Computers in Human Behavior - Cite Score: 4.57, 76, 184-200, Elsevier [https://doi.org/10.1016/j.chb.2017.06.042]
Elsevier IJHCS: Belk M., Fidas C., Germanakos P., & Samaras G. (2015) Do human cognitive differences in information processing affect preference and performance of captcha?, International Journal of Human - Computer Studies - Cite Score: 3.38, 84, 1-18, Elsevier [http://dx.doi.org/10.1016/j.ijhcs.2015.07.002]
ACM CHI 2011: Fidas, C.A., Voyiatzis, A.G., Avouris, N.M. (2011). On the necessity of user-friendly captcha. ACM SIGCHI Human Factors in Computing Systems (CHI 2011), ACM Press, 2623-2626 [http://dx.doi.org/10.1145/1978942.1979325]

Projects

I have worked as a project manager, user experience expert and information systems architect in numerous EU-funded, National and industrial research projects like:

FP7-CR-PLAY: Capture Reconstruct Play (2013-2016, WP5 Leader - Formative and Summative Evaluation) - http://www.cr-play.eu
FP7-SERIES: Seismic Engineering Research Infrastructures for European Synergies (2009-2013, Lead of Information Systems Architecture Design and Implementation) - http://www.series.upatras.gr
FP6-QALIBRA: Quality of life-integrated benefit and risk analysis web-based tool for assessing food safety and health benefits (2006-2010, Lead of Evaluation) - http://www.qalibra.eu
FP6 e-Ten-COMMODE: Collaborative modeling environment (2005-2006, Lead of Evaluation and Pilot Studies)
IST-MODELLINGSPACE: Space of ideas expression modeling and collaboration (2001-2004, Software Engineer)

Teaching

Assistant Professor (2016-), Tenure-track Lecturer (2013-2016) at the Department of Cultural Heritage and New Technologies, University of Patras

New Interactive Media (M.Sc.)
Human-Computer Interaction (B.Sc.)
Structural Programming (B.Sc.)
Visual Programming (B.Sc.)
Pervasive Computing and Cultural Heritage (B.Sc.)

Visiting Assistant Professor at the Department of Computer Science, University of Cyprus (2011-2013)

Human-Computer Interaction (B.Sc.)
Programming Priniciples for Engineers (B.Sc.)
Operating Systems (B.Sc.)
Introduction to Computer Science (B.Sc.)

Adjunct Lecturer at the University of Patras, University of Ioannina, Technical Institute of Patras (2004-2011)

Advising

Prospective Students

I am always happy to discuss with prospective students new research endeavors in the areas of Information Systems and Culture, Modelling Human Cognition in Interactive Systems, and Usable Security. If you are interested to discuss your research idea please don't hesitate to contact me at fidas AT upatras.gr

Suggested Topics for Ph.D.

AR and VR Effects on Human Cognition within Cultural Heritage Informatics
Investigating the Effects of Human Emotions in User Authentication
Adaptable User Authentication in Ubiquitous Computation Realms

Ph.D. Students

Argyris Constantinides (with University of Cyprus): Leveraging on Users' Cultural Factors for Increasing Graphical Password Memorability and Security - Jan. 2018-
George Raptis: A Personalized Cultural Heritage Framework based on Human Cognitive Processing - Sept. 2016-
Christina Katsini: Methods and Techniques for Usable and Secure User Authentication in Natural User Interaction - Sept. 2016-
Marios Belk: Adaptive Usable Security: Personalising User Authentication and CAPTCHA based on Individual Differences in Cognitive Processing - Successfully defended December 2015