Browsing by Author "Belk, Marios"
Now showing items 21-40 of 56
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Article
An individual differences approach in adaptive waving of user checkout process in retail eCommerce
Belk, Marios; Germanakos, Panagiotis; Asimakopoulos, Stavros; Andreou, Panayiotis G.; Mourlas, Constantinos; Spanoudis, George; Samaras, George S. (2014)Developing a usable checkout process is pivotal for e-business success. However, recent research has shown that users frequently abandon their shopping carts and lacking a clear direction through the process. In this ...
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Article
An individual differences approach in designing ontologies for efficient personalization
Tsianos, Nikos; Germanakos, Panagiotis; Belk, Marios; Lekkas, Zacharias; Samaras, George S.; Mourlas, Constantinos (2013)This article discusses the potential role of cognitive individual differences in the context of designing ontologies for personalization on users' characteristics. The theoretical framework of the proposed approach is ...
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Conference Object
Influences of Human Cognition and Visual Behavior on Password Strength during Picture Password Composition
Katsini, Christina; Fidas, Christos; Raptis, George E.; Belk, Marios; Samaras, George; Avouris, Nikolaos (Association for Computing Machinery, 2018)Visual attention, search, processing and comprehension are important cognitive tasks during a graphical password composition activity. Aiming to shed light on whether individual differences on visual behavior affect the ...
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Conference Object
Influences of users' cognitive strategies on graphical password composition
Katsini, Christina P.; Fidas, Christos A.; Belk, Marios; Avouris, Nikolaos M.; Samaras, George S. (Association for Computing Machinery, 2017)Recent research reveals interaction effects among human cognitive processing factors, interaction device types and user authentication schemes towards security of user created graphical keys. Aiming to investigate how ...
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Conference Object
Intelligent authoring tools for enhancing mass customization of e-services: The smarTag framework
Germanakos, Panagiotis; Tsianos, Nikos; Lekkas, Zacharias; Mourlas, Constantinos; Belk, Marios; Samaras, George S. (2009)Mass customization should be more than just configuring a specific component (hardware or software), but should be seen as the co-design of an entire system, including services, experiences and human satisfaction at the ...
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Article
The interplay between humans, technology and user authentication: A cognitive processing perspective
Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2017)This paper investigates the interplay among human cognitive processing differences (field dependence vs. field independence), alternative interaction device types (desktop vs. touch) and user authentication schemes (textual ...
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Article
Investigating the relation between users' cognitive style and web navigation behavior with k-means clustering
Belk, Marios; Papatheocharous, Efi; Germanakos, Panagiotis; Samaras, George S. (2012)This paper focuses on modeling users' cognitive style based on a set of Web usage mining techniques on navigation patterns and clickstream data. Main aim is to investigate whether k-means clustering can group users of ...
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Article
Modeling users on the World Wide Web based on cognitive factors, navigation behavior and clustering techniques
Belk, Marios; Papatheocharous, Efi; Germanakos, Panagiotis; Samaras, George S. (2013)This paper focuses on modeling users' cognitive styles based on a set of Web usage mining techniques on user navigation patterns and clickstream data. Main aim is to investigate whether specific clustering techniques can ...
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Conference Object
On modelling cognitive styles of users in adaptive interactive systems using artificial neural networks efi papatheocharous1 efi.papatheocharous
Belk, Marios; Germanakos, Panagiotis; Samaras, George S. (2012)User modelling in interactive Web systems is an essential quality to optimally filter, personalise and adapt their content and functionality to serve the intrinsic needs of individual users. The mechanism for obtaining the ...
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Article
On supporting security and privacy-preserving interaction through adaptive usable security
Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2014)The purpose of this paper is to propose a preliminary framework for supporting usable security on the World Wide Web through adaptivity in user interface designs. In particular we elaborate the concept of "Adaptive Usable ...
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Conference Object
On the Accuracy of Eye Gaze-driven Classifiers for Predicting Image Content Familiarity in Graphical Passwords
Constantinides, Argyris; Belk, Marios; Fidas, Christos; Pitsillides, Andreas (Association for Computing Machinery, 2019)Graphical passwords leverage the picture superiority effect to enhance memorability, and reflect today's haptic users' interaction realms. Images related to users' past sociocultural experiences (e.g., retrospective) enable ...
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Conference Object
On the Personalization of Image Content in Graphical Passwords based on Users' Sociocultural Experiences: New Challenges and Opportunities
Constantinides, Argyris; Fidas, Christos; Belk, Marios; Pitsillides, Andreas (Association for Computing Machinery, 2019)Recent works underpin the added value of considering users' past sociocultural experiences as a personalization factor for the image content used within graphical password schemes, since it has a positive impact on the ...
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Conference Object
An ontological cognitive user model for adapting generic web structures
Germanakos, Panagiotis; Belk, Marios; Tsianos, Nikos; Lekkas, Zacharias; Mourlas, Constantinos; Samaras, George S. (2010)Adaptation and Personalization systems can benefit with the incorporation of ontological knowledge, especially when it comes to modeling users. In this paper we present a cognitive approach to Web Personalization based on ...
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Conference Object
The PersonaCheck System for Personalizing M-Commerce Checkout Processes
Constantinides, Anthony G.; Belk, Marios; Germanakos, Panagiotis; Samaras, George S. (Institute of Electrical and Electronics Engineers Inc., 2015)This demonstration paper presents a Web-based adaptive interactive system for personalizing the checkout process of M-Commerce Web environments, coined Persona Check. In particular, the system personalizes the visual and ...
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Conference Object
Personalised continuous software engineering
Papatheocharous, Efi; Belk, Marios; Nyfjord, J.; Germanakos, Panagiotis; Samaras, George S. (Association for Computing Machinery, Inc, 2014)This work describes how human factors can influence continuous software engineering. The reasoning begins from the Agile Manifesto promoting individuals and interactions over processes and tools. The organisational need ...
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Article
A personalization method based on human factors for improving usability of user authentication tasks
Belk, Marios; Germanakos, Panagiotis; Fidas, Christos A.; Samaras, George S. (2014)Aiming to ensure safety of operation to application providers and improve the usability of human computer interactions during authentication, this paper proposes a two-step personalization approach of user authentication ...
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Article
A Personalized User Authentication Approach Based on Individual Differences in Information Processing
Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2014)
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Article
A personalized user authentication approach based on individual differences in information processing
Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2015)An effective user authentication mechanism should embrace both security and usability aspects as its purpose is to ensure safety of operation of online services but as well usability and transparency to its end users. In ...
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Conference Object
Picture Passwords in Mixed Reality: Implementation and Evaluation
Hadjidemetriou, George; Belk, Marios; Fidas, Christos; Pitsillides, Andreas (Association for Computing Machinery, 2019)We present HoloPass, a mixed reality application for the HoloLens wearable device, which allows users to perform user authentication tasks through gesture-based interaction. In particular, this paper reports the implementation ...
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Article
Proposing a fuzzy adaptation mechanism based on cognitive factors of users for web personalization
Papatheocharous, Efi; Belk, Marios; Germanakos, Panagiotis; Samaras, George S. (2012)The increased demand of Web services and diverse characteristics of users have resulted in a plethora of applications that aim to provide personalized services based on the heterogeneous needs and preferences of users. ...