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An integrated online/offline social network-based model for crowdfunding support in developing countries: The case of Nigeria (2022)
Journal Article
Ogwu, K., Hickey, P., Okeke, O. J. P., Haque, A. U., Pimenidis, E., & Kozlovski, E. (2022). An integrated online/offline social network-based model for crowdfunding support in developing countries: The case of Nigeria. Sustainability, 14(15), e9333. https://doi.org/10.3390/su14159333

This paper is one of the first attempts to address the fundamental barriers to the adoption of online crowdfunding mechanisms in a developing country by offering a new online/offline fundraising model. The focus is on Nigeria as a typical example of... Read More about An integrated online/offline social network-based model for crowdfunding support in developing countries: The case of Nigeria.

An explainable semi-personalized federated learning model (2022)
Journal Article
Demertzis, K., Iliadis, L., Kikiras, P., & Pimenidis, E. (2022). An explainable semi-personalized federated learning model. Integrated Computer-Aided Engineering, 29(4), 335-350. https://doi.org/10.3233/ICA-220683

Training a model using batch learning requires uniform data storage in a repository. This approach is intrusive, as users have to expose their privacy and exchange sensitive data by sending them to central entities to be preprocessed. Unlike the afor... Read More about An explainable semi-personalized federated learning model.

Design issues of a pan European smart cross border ‘dream like’ e-Gov primary healthcare medical service (2022)
Journal Article
Sideridis, A. B., Pimenidis, E., Protopappas, L., Yialouris, C., Maragkopoulos, V. -. A., & Chatziandreou, A. (2022). Design issues of a pan European smart cross border ‘dream like’ e-Gov primary healthcare medical service. International Journal of Electronic Governance, 14(1-2), 172-194. https://doi.org/10.1504/IJEG.2022.123252

The EU Commission has provided its members regulation and systems for the development of services enabling cross border transactions, but the full practice of these is modest. An exception can be made in cases where there’s personal data processing.... Read More about Design issues of a pan European smart cross border ‘dream like’ e-Gov primary healthcare medical service.

Variational restricted Boltzmann machines to automated anomaly detection (2022)
Journal Article
Demertzis, K., Iliadis, L., Pimenidis, E., & Kikiras, P. (2022). Variational restricted Boltzmann machines to automated anomaly detection. Neural Computing and Applications, 34, 15207–15220. https://doi.org/10.1007/s00521-022-07060-4

Data-driven methods are implemented using particularly complex scenarios that reflect in-depth perennial knowledge and research. Hence, the available intelligent algorithms are completely dependent on the quality of the available data. This is not po... Read More about Variational restricted Boltzmann machines to automated anomaly detection.

Geo-AI to aid disaster response by memory-augmented deep reservoir computing (2021)
Journal Article
Demertzis, K., Iliadis, L., & Pimenidis, E. (2021). Geo-AI to aid disaster response by memory-augmented deep reservoir computing. Integrated Computer-Aided Engineering, 28(4), 383-398. https://doi.org/10.3233/ICA-210657

It is a fact that natural disasters often cause severe damage both to ecosystems and humans. Moreover, man-made disasters can have enormous moral and economic consequences for people. A typical example is the large deadly and catastrophic explosion i... Read More about Geo-AI to aid disaster response by memory-augmented deep reservoir computing.

A guideline-based approach for assisting with the reproducibility of experiments in recommender systems evaluation (2019)
Journal Article
Polatidis, N., Pimenidis, E., Fish, A., & Kapetanakis, S. (2019). A guideline-based approach for assisting with the reproducibility of experiments in recommender systems evaluation. International Journal on Artificial Intelligence Tools, 28(8), Article 1960011. https://doi.org/10.1142/S021821301960011X

Recommender systems' evaluation is usually based on predictive accuracy and information retrieval metrics, with better scores meaning recommendations are of higher quality. However, new algorithms are constantly developed and the comparison of result... Read More about A guideline-based approach for assisting with the reproducibility of experiments in recommender systems evaluation.

An explanation-based approach for experiment reproducibility in recommender systems (2019)
Journal Article
Polatidis, N., Papaleonidas, A., Pimenidis, E., & Iliadis, L. (in press). An explanation-based approach for experiment reproducibility in recommender systems. Neural Computing and Applications, https://doi.org/10.1007/s00521-019-04274-x

© 2019, Springer-Verlag London Ltd., part of Springer Nature. The offline evaluation of recommender systems is typically based on accuracy metrics such as the Mean Absolute Error and the Root Mean Squared Error for error rating prediction and Precisi... Read More about An explanation-based approach for experiment reproducibility in recommender systems.

Mobile recommender systems: Identifying the major concepts (2018)
Journal Article
Pimenidis, E., Polatidis, N., & Mouratidis, H. (2019). Mobile recommender systems: Identifying the major concepts. Journal of Information Science, 45(3), 387-397. https://doi.org/10.1177/0165551518792213

© The Author(s) 2018. This article identifies the factors that have an impact on mobile recommender systems. Recommender systems have become a technology that has been widely used by various online applications in situations where there is an informa... Read More about Mobile recommender systems: Identifying the major concepts.

From product recommendation to cyber-attack prediction: generating attack graphs and predicting future attacks (2018)
Journal Article
Polatidis, N., Pimenidis, E., Pavlidis, M., Papastergiou, S., & Mouratidis, H. (2020). From product recommendation to cyber-attack prediction: generating attack graphs and predicting future attacks. Evolving Systems, 11(2), 479-490. https://doi.org/10.1007/s12530-018-9234-z

Modern information society depends on reliable functionality of information systems infrastructure, while at the same time the number of cyber-attacks has been increasing over the years and damages have been caused. Furthermore, graphs can be used to... Read More about From product recommendation to cyber-attack prediction: generating attack graphs and predicting future attacks.

Smart Cross-Border e-Gov Systems: An application to refugee mobility (2017)
Journal Article
Sideridis, A., Protopappas, L., Tsiafoulis, S., & Pimenidis, E. (2017). Smart Cross-Border e-Gov Systems: An application to refugee mobility. International Journal of Electronic Governance, 9(3/4), 246-266. https://doi.org/10.1504/IJEG.2017.10006256

Smart Cross-Border e-Government Systems for citizens and business have been recently proposed to further improve everyday lives, expand business fron-tiers, and facilitate the movement of citizens by reducing the constraints imposed by existing borde... Read More about Smart Cross-Border e-Gov Systems: An application to refugee mobility.

E-voting vs. e-trust: A test bed for e-democracy in a world in crisis? (2017)
Journal Article
Shat, F., & Pimenidis, E. (2017). E-voting vs. e-trust: A test bed for e-democracy in a world in crisis?. International Journal of Electronic Governance, 9(3/4), 229-245. https://doi.org/10.1504/IJEG.2017.10006254

The world is currently experiencing a number of real challenges in the face of persistent economic crisis, local conflicts and huge waves of refugees. All of the above are affecting secure access to, completion of peoples’voting rights and participat... Read More about E-voting vs. e-trust: A test bed for e-democracy in a world in crisis?.

A method for privacy-preserving collaborative filtering recommendations (2017)
Journal Article
Georgiadis, C., Polatidis, N., Mouratidis, H., & Pimenidis, E. (2017). A method for privacy-preserving collaborative filtering recommendations. Journal of Universal Computer Science, 23(2), 146-166

With the continuous growth of the Internet and the progress of electronic commerce the issues of product recommendation and privacy protection are becoming increasingly important. Recommender Systems aim to solve the information overload problem by p... Read More about A method for privacy-preserving collaborative filtering recommendations.

Privacy-preserving recommendations in context-aware mobile environments (2017)
Journal Article
Stiakakis, E., Georgiadis, C. K., Polatidis, N., & Pimenidis, E. (2017). Privacy-preserving recommendations in context-aware mobile environments. Information and Computer Security, 25(1), 62-79. https://doi.org/10.1108/ICS-04-2016-0028

© Emerald Publishing Limited. Purpose - This paper aims to address privacy concerns that arise from the use of mobile recommender systems when processing contextual information relating to the user. Mobile recommender systems aim to solve the informa... Read More about Privacy-preserving recommendations in context-aware mobile environments.

Privacy-preserving collaborative recommendations based on random perturbations (2016)
Journal Article
Polatidis, N., Georgiadis, C. K., Pimenidis, E., & Mouratidis, H. (2017). Privacy-preserving collaborative recommendations based on random perturbations. Expert Systems with Applications, 71, 18-25. https://doi.org/10.1016/j.eswa.2016.11.018

© 2016 Elsevier Ltd Collaborative recommender systems offer a solution to the information overload problem found in online environments such as e-commerce. The use of collaborative filtering, the most widely used recommendation method, gives rise to... Read More about Privacy-preserving collaborative recommendations based on random perturbations.

E-voting versus e-trust: A case for e-democracy in Palestine (2016)
Journal Article
Shat, F., & Pimenidis, E. (2016). E-voting versus e-trust: A case for e-democracy in Palestine

The world at present is facing a number of real challenges in the face of persistent economic crisis, local conflicts and huge waves of refugees. All of the above are affecting secure access to and completion of peoples voting rights. The relevant te... Read More about E-voting versus e-trust: A case for e-democracy in Palestine.

Ensuring cloud security: Current concerns and research challenges (2014)
Journal Article
Vesyropoulos, N., Georgiadis, C. K., & Pimenidis, E. (2014). Ensuring cloud security: Current concerns and research challenges. Communications in Computer and Information Science, 441, 3-10. https://doi.org/10.1007/978-3-319-11710-2_1

© Springer International Publishing Switzerland 2014. Over the past few years Cloud computing has been widely accepted and adopted as an alternative way for businesses to store data, communicate and operate. Consumers and enterprises regard this as a... Read More about Ensuring cloud security: Current concerns and research challenges.

Electronic government enactment in a small developing country – the Palestinian authority’s policy and practice (2014)
Journal Article
Shat, F. J. F., Shat, F. J. F., Mousavi, A., & Pimenidis, E. (2014). Electronic government enactment in a small developing country – the Palestinian authority’s policy and practice. Communications in Computer and Information Science, 441, 83-92. https://doi.org/10.1007/978-3-319-11710-2_8

© Springer International Publishing Switzerland 2014. Successful implementation and utilization of electronic government in Palestine has been challenging field for the Palestinian authority, businesses and dispersed citizens. Our research provides a... Read More about Electronic government enactment in a small developing country – the Palestinian authority’s policy and practice.

Can e-Government applications contribute to performance improvement in public administration? (2014)
Journal Article
Pimenidis, E., & Georgiadis, C. K. (2014). Can e-Government applications contribute to performance improvement in public administration?. International Journal of Operations Research and Information Systems, 5(1), 48-57. https://doi.org/10.4018/ijoris.2014010104

Electronic Government applications have been the focus of hundreds of local and national government administrations all over the world during the past decade. The emphasis of most of these applications lies in their effort to improve the experience o... Read More about Can e-Government applications contribute to performance improvement in public administration?.

Fuzzy graphs: Algebraic structure and syntactic recognition (2013)
Journal Article
Kalampakas, A., Spartalis, S., Iliadis, L., & Pimenidis, E. (2014). Fuzzy graphs: Algebraic structure and syntactic recognition. Artificial Intelligence Review, 42(3), 479-490. https://doi.org/10.1007/s10462-013-9412-0

© Springer Science+Business Media Dordrecht 2013. Directed fuzzy hypergraphs are introduced as a generalization of both crisp directed hypergraphs and directed fuzzy graphs. It is proved that the set of all directed fuzzy hypergraphs can be structure... Read More about Fuzzy graphs: Algebraic structure and syntactic recognition.

Web services for rural areas-Security challenges in development and use (2010)
Journal Article
Pimenidis, E., & Georgiadis, C. K. (2010). Web services for rural areas-Security challenges in development and use. Computers and Electronics in Agriculture, 70(2), 348-354. https://doi.org/10.1016/j.compag.2009.07.016

Web services (WS) are the modern response of traders and online service providers to satisfying the increasing needs and demands of the digital communities. WS formation and operation is based on a software system designed to support interoperable ma... Read More about Web services for rural areas-Security challenges in development and use.