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Christos A. Fidas

He received a PhD from the Electrical & Computer Engineering Department, University of Patras, Greece. His research interests are related to information systems and culture, human-computer interaction and usable security.

 

For more information please visit: Personal Web-site
e-mail: fidas AT upatras.gr

 

Raptis, G. E., Fidas, C., Katsini, C., & Avouris, N. (2019). A cognition-centered personalization framework for cultural-heritage content. User Modeling and User-Adapted Interaction, 29(1), 9–65. https://doi.org/10.1007/s11257-019-09226-7 Cite
Katsini, C., Fidas, C., Belk, M., Samaras, G., & Avouris, N. (2019). A Human-Cognitive Perspective of Users' Password Choices in Recognition-Based Graphical Authentication. International Journal of Human–Computer Interaction, 1–13. https://doi.org/10/gf4gf2 Cite
Raptis, G. E., 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. Journal on Computing and Cultural Heritage, 12(1), 1–25. https://doi.org/10.1145/3292057 Cite
Katsini, C., Raptis, G. E., Fidas, C., & Avouris, N. (2018). Does Image Grid Visualization Affect Password Strength and Creation Time in Graphical Authentication? In Proceedings of the 2018 International Conference on Advanced Visual Interfaces (pp. 33:1–33:5). New York, NY, USA: ACM. https://doi.org/10/gf4gf9 Cite
Katsini, C., Raptis, G. E., Fidas, C., & Avouris, N. (2018). Towards Gaze-based Quantification of the Security of Graphical Authentication Schemes. In Proceedings of the 2018 ACM Symposium on Eye Tracking Research & Applications (pp. 17:1–17:5). New York, NY, USA: ACM. https://doi.org/10.1145/3204493.3204589 Cite
Raptis, G. E., Fidas, C., & 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, 114, 69–79. https://doi.org/10.1016/j.ijhcs.2018.02.003 Cite
Katsini, C., Fidas, C., Raptis, G. E., Belk, M., Samaras, G., & Avouris, N. (2018). Influences of Human Cognition and Visual Behavior on Password Strength During Picture Password Composition. In Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (pp. 87:1–87:14). New York, NY, USA: ACM. https://doi.org/10/gf4r72 Cite
Katsini, C., Fidas, C., Raptis, G. E., Belk, M., Samaras, G., & Avouris, N. (2018). Eye Gaze-driven Prediction of Cognitive Differences During Graphical Password Composition. In 23rd International Conference on Intelligent User Interfaces (pp. 147–152). New York, NY, USA: ACM. https://doi.org/10/gf4ggc Cite
Raptis, G. E., Fidas, C. A., Katsini, C., & Avouris, N. M. (2018). Towards a Cognition-Centered Personalization Framework for Cultural-Heritage Content. In Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems (p. LBW011:1–LBW011:6). New York, NY, USA: ACM. https://doi.org/10/gf4ggb Cite
Gkikopoulos, P., Raptis, G. E., Katsini, C., Fidas, C. A., & Avouris, N. (2017). Design, Development, and Evaluation of a Natural Controller used for Interaction with Cultural Artefacts in a Virtual-Reality Environment. In In Proceedings of the 2nd Pan-Hellenic Conference on Digitization of Cultural Heritage (Euromed 2017). Cite
Belk, M., Fidas, C., Katsini, C., Avouris, N., & Samaras, G. (2017). Effects of Human Cognitive Differences on Interaction and Visual Behavior in Graphical User Authentication (pp. 287–296). https://doi.org/10/gf56ns Cite
Raptis, G. E., Katsini, C., Fidas, C., & Avouris, N. (2017). Effects of Image-Based Rendering and Reconstruction on Game Developers Efficiency, Game Performance, and Gaming Experience. In R. Bernhaupt, G. Dalvi, A. Joshi, D. K. Balkrishan, J. O'Neill, & M. Winckler (Eds.), Human-Computer Interaction - INTERACT 2017 (pp. 87–96). Cham, Switzerland: Springer International Publishing. Cite
Belk, M., Pamboris, A., Fidas, C., Katsini, C., Avouris, N., & Samaras, G. (2017). Sweet-spotting Security and Usability for Intelligent Graphical Authentication Mechanisms. In Proceedings of the International Conference on Web Intelligence (pp. 252–259). New York, NY, USA: ACM. https://doi.org/10/gf4r75 Cite
Raptis, G. E., 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. In Proceedings of the 25th Conference on User Modeling, Adaptation and Personalization (pp. 164–173). New York, NY, USA: ACM. https://doi.org/10/gf4r76 Cite
Raptis, G. E., Fidas, C., & Avouris, N. (2017). Cultural Heritage Gaming: Effects of Human Cognitive Styles on Players' Performance and Visual Behavior. In Adjunct Publication of the 25th Conference on User Modeling, Adaptation and Personalization - UMAP '17 (pp. 343–346). Bratislava, Slovakia: ACM Press. https://doi.org/10/gf4gf8 Cite
Raptis, G. E., Fidas, C. A., & Avouris, N. M. (2017). On Implicit Elicitation of Cognitive Strategies using Gaze Transition Entropies in Pattern Recognition Tasks. In Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI EA '17 (pp. 1993–2000). Denver, Colorado, USA: ACM Press. https://doi.org/10.1145/3027063.3053106 Cite
Katsini, C., Fidas, C., Belk, M., Avouris, N., & Samaras, G. (2017). Influences of Users' Cognitive Strategies on Graphical Password Composition. In Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems (pp. 2698–2705). New York, NY, USA: ACM. https://doi.org/10/gf4gf5 Cite
Raptis, G. E., Fidas, C. A., & Avouris, N. M. (2016). Using Eye Tracking to Identify Cognitive Differences: A Brief Literature Review. In Proceedings of the 20th Pan-Hellenic Conference on Informatics - PCI '16 (pp. 1–6). Patras, Greece: ACM Press. https://doi.org/10.1145/3003733.3003762 Cite
Katsini, C., Belk, M., Fidas, C., Avouris, N., & Samaras, G. (2016). Security and Usability in Knowledge-based User Authentication: A Review. In Proceedings of the 20th Pan-Hellenic Conference on Informatics (pp. 63:1–63:6). New York, NY, USA: ACM. https://doi.org/10/gf4gf6 Cite
Raptis, G., Fidas, C., & Avouris, N. (2016). Differences of Field Dependent/Independent Gamers on Cultural Heritage Playing: Preliminary Findings of an Eye-Tracking Study. In Digital Heritage. Progress in Cultural Heritage: Documentation, Preservation, and Protection (Vol. 10059, pp. 199–206). Springer International Publishing. https://doi.org/10/gf459j Cite
Raptis, G. E., Fidas, C. A., & Avouris, N. M. (2016). Do Field Dependence-Independence Differences of Game Players Affect Performance and Behaviour in Cultural Heritage Games? In Proceedings of the 2016 Annual Symposium on Computer-Human Interaction in Play - CHI PLAY '16 (pp. 38–43). Austin, Texas, USA: ACM Press. https://doi.org/10.1145/2967934.2968107 Cite
Raptis, G. E., Fidas, C., & Avouris, N. (2016). A qualitative analysis of the effect of wholistic-analytic cognitive style dimension on the cultural heritage game playing. In 2016 7th International Conference on Information, Intelligence, Systems & Applications (IISA) (pp. 1–6). Chalkidiki, Greece: IEEE. https://doi.org/10.1109/IISA.2016.7785364 Cite
Fidas, C., Avouris, N., Halvatzaras, D., & Orvieto, I. (2016). Evaluation of a new asset creation pipeline for indie game developers. In ACM CHI 2016 Games User Research workshop (p. 4). San Jose, CA, USA. Cite
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, 84, 1–18. https://doi.org/10/f873gq Cite
Belk, M., Fidas, C., Germanakos, P., & Samaras, G. (2015). A Personalized User Authentication Approach Based on Individual Differences in Information Processing. Interacting with Computers, 27(6), 706–723. https://doi.org/10/f7xw28 Cite
Fidas, C., Avouris, N., & Orvieto, I. (2015). Requirements Elicitation for new Video Game Development Tools: A Case Study. In 15th IFIP International Conference on Human-Computer Interaction - INTERACT 2015 (p. 18). Cite
Fidas, C. A., & Avouris, N. M. (2015). Personalization of mobile applications in cultural heritage environments. In 2015 6th International Conference on Information, Intelligence, Systems and Applications (IISA) (pp. 1–6). Corfu, Greece: IEEE. https://doi.org/10/gf4r8c Cite
Fidas, C., Sintoris, C., Yiannoutsou, N., & Avouris, N. (2015). A survey on tools for end user authoring of mobile applications for cultural heritage. In 2015 6th International Conference on Information, Intelligence, Systems and Applications (IISA) (pp. 1–5). Corfu, Greece: IEEE. https://doi.org/10/gf4r8d Cite
Ioannidis, I., Papachristos, E., Katsanos, C., Karousos, N., Fidas, C., & Avouris, N. (2014). SONETA: A Social Media Geo-Trends Analysis Tool. In Proceedings of the 6th International Conference on Social Computing and Social Media - Volume 8531 (pp. 186–196). Crete, Greece: Springer-Verlag New York, Inc. https://doi.org/10.1007/978-3-319-07632-4_18 Cite
Papachristos, E., Katsanos, C., Karousos, N., Ioannidis, I., Fidas, C., & Avouris, N. (2014). Deployment, Usage and Impact of Social Media Tools in Small and Medium Enterprises: A Case Study. In G. Meiselwitz (Ed.), Social Computing and Social Media (pp. 79–90). Crete, Greece: Springer International Publishing. https://doi.org/10.1007/978-3-319-07632-4_8 Cite
Fidas, C., & Voyiatzis, A. G. (2013). On Users' Preference on Localized vs. Latin-Based CAPTCHA Challenges. In INTERACT. Cape Town, South Africa: Springer Berlin Heidelberg. https://doi.org/10/gf4r7s Cite
Belk, M., Fidas, C., Germanakos, P., & Samaras, G. (2013). Security for Diversity: Studying the Effects of Verbal and Imagery Processes on User Authentication Mechanisms. In INTERACT. Cape Town, South Africa: Springer Berlin Heidelberg. https://doi.org/10/gf5dxf Cite
Voyiatzis, A. G., Fidas, C. A., Serpanos, D. N., & Avouris, N. M. (2011). An Empirical Study on the Web Password Strength in Greece. In 2011 15th Panhellenic Conference on Informatics (pp. 212–216). Kastoria, Greece. https://doi.org/10/cgt2sp Cite
Fidas, C. A., Voyiatzis, A. G., & Avouris, N. M. (2011). On the Necessity of User-friendly CAPTCHA. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (pp. 2623–2626). Vancouver, BC, Canada: ACM. https://doi.org/10/c4bckn Cite
Fidas, C. (2011). Towards a Context Aware Service for Performing Semi-Moderated Remote Usability Studies of Web Sites. E-Minds, 2. Cite
Fidas, C. A., Voyiatzis, A. G., & Avouris, N. M. (2010). When Security Meets Usability: A User-Centric Approach on a Crossroads Priority Problem. In 2010 14th Panhellenic Conference on Informatics (pp. 112–117). Tripolis. https://doi.org/10.1109/PCI.2010.17 Cite
Fidas, C., Maragoudakis, E., & Avouris, N. (2008). Intelligent - Miner: The Conceptual and Architectural Design of a Web Based Data Mining Service. The Conceptual and Architectural Design of a Web Based Data Mining Service”, EMinds, International Journal on Human Computer Interaction, 1, No4. Cite
Fiotakis, G., Fidas, C., & Avouris, N. (2007). Comparative usability evaluation of web systems through ActivityLens. In Proc. PCI 2007. Patras, Greece. Cite
Fidas, C., Katsanos, C., Papachristos, E., Tselios, N., & Avouris, N. (2007). Remote usability evaluation methods and tools: A survey. In Proceedings of PCI 2007. Patras, Greece. Cite
Margaritis, M., Fidas, C., & Avouris, N. (2007). A framework to facilitate building of collaborative learning applications. Special Issue on Technology for Collaborative Learning, Advanced Technology for Learning (ATL) International Journal, 4, no 1. Cite
Fidas, C., Avouris, N., Komis, V., & Politis, P. (2006). On supporting young students in visual logic modeling. In Artificial Intelligence Applications and Innovations (Vol. 204, pp. 163–170). Athens, Greece: Springer US. https://doi.org/10/dbnfbh Cite
Fidas, C., Politis, P., Komis, V., & Avouris, N. (2006). An Environment for Constructing and Exploring Visual Models of Logic Propositions by Young Students. In Advances in Artificial Intelligence (Vol. 3955, pp. 482–485). Heraklion, Crete: Springer Berlin Heidelberg. https://doi.org/10/fmgkb3 Cite
Fidas, C., Kapsalis, V., Tranoris, C., & Avouris, N. (2006). Synchronous support and monitoring in web‐based educational systems. Campus-Wide Information Systems, 23(3), 138–148. https://doi.org/10/bzkqp6 Cite
Fidas, C., Tranoris, C., Kapsalis, V., & Avouris, N. (2005). System design for synchronous support and monitoring in web–based educational systems. In Proc. 3rd International Conference on Open and Distance Learning (Vol. Vol A, pp. 577–585). Patras, Greece: Propombos Publ. Cite
Fidas, C., Komis, V., Tzanavaris, S., & Avouris, N. (2005). Heterogeneity of learning material in synchronous computer-supported collaborative modelling. Computers & Education, 44(2), 135–154. https://doi.org/10/dzn3hb Cite
Margaritis, M., Fidas, C., Avouris, N., & Komis, V. (2003). A Peer-To-Peer Architecture for Synchronous Collaboration over Low-Bandwidth Networks. In Proc 9th PCI 2003 (p. 13). Thessaloniki, Greece. Cite
Komis, V., Avouris, N., & Fidas, C. (2003). A study on heterogeneity during real-time collaborative problem solving,In B. Wasson, S. Ludvigsen, U. Hoppe (eds.). In Designing for Change in Networked Learning Environments, Proc. CSCL 2003. Dordrecht, The Netherlands. Cite
Avouris, N., Tselios, N., Fidas, C., & Papachristos, E. (2003). Website Evaluation: A Usability-Based Perspective. In Y. Manolopoulos, S. Evripidou, & A. C. Kakas (Eds.), Advances in Informatics (pp. 217–231). Springer Berlin Heidelberg. Cite
Komis, V., Avouris, N., & Fidas, C. (2003). A Study on Heterogeneity During Realtime Collaborative Problem Solving. In B. Wasson, S. Ludvigsen, & U. Hoppe (Eds.), Designing for Change in Networked Learning Environments: Proceedings of the International Conference on Computer Support for Collaborative Learning 2003 (pp. 411–420). Dordrecht: Springer Netherlands. Cite
Komis, V., Avouris, N., & Fidas, C. (2002). Computer-Supported Collaborative Concept Mapping: Study of Synchronous Peer Interaction. Education and Information Technologies, 7(2), 169–188. https://doi.org/10/bx7wvd Cite