Online Child Grooming Detection: Challenges and Future Directions

N. Mylonas, N. Stylianou, D. Chatzakou, T. Spathi, S. Alevizos, A. Drandaki, A. Koufakis, G. Kalpakis, T. Tsikrika, S. Vrochidis, "Online Child Grooming Detection: Challenges and Future Directions.", in Paradigms on Technology Development for Security Practitioners, I. Gkotsis, D. Kavallieros, N. Stoianov, S. Vrochidis, D. Diagourtas, B. Akhgar, (eds), Security Informatics and Law Enforcement, Springer, Cham, pp 237–247. https://doi.org/10.1007/978-3-031-62083-6_19
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“PERIVALLON: Improved Intelligence Picture and Operational Capacities to Combat Organised Environmental Crime “

E. Villamor Medina, T. Tsikrika, P. Fraternali, L. Caldararu, V. Efstathiou, S. Balbierz, E. Skarlatos, E. Korenjak, A. Karakostas, L. Di Nuovo, F. Benolli, D. Bellingeri, D. Borloo, R. Sciunnach, J. Berggren, O. Manolache, I. Petropoulos, R. Bors, N. Haimov, A. Staniforth, J. Thompson, "PERIVALLON: Improved Intelligence Picture and Operational Capacities to Combat Organised Environmental Crime.", in Paradigms on Technology Development for Security Practitioners, I. Gkotsis, D. Kavallieros, N. Stoianov, S. Vrochidis, D. Diagourtas, B. Akhgar, Eds., Springer, Cham. https://doi.org/10.1007/978-3-031-62083-6_16
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Social Media Monitoring for Disaster Management

S. Andreadis, I. Gialampoukidis, S. Vrochidis, I. Kompatsiaris, "Social Media Monitoring for Disaster Management.", in Responding to Extreme Weather Events, Wiley Online Library, 2024, pp. 224-242. https://doi.org/10.1002/9781119741374.ch11
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Frugal and Robust AI for Defence Advanced Intelligence

A. Papagianni, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Frugal and Robust AI for Defence Advanced Intelligence.", in Paradigms on Technology Development for Security Practitioners, Security Informatics and Law Enforcement, Springer, Cham, 2024.
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Modified SkipGram Negative Sampling Model for Faster Convergence of Graph Embedding

K. Loumponias, A. Kosmatopoulos, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Modified SkipGram Negative Sampling Model for Faster Convergence of Graph Embedding.", in Deep Learning Theory and Applications (DeLTA 2022), vol. 1858, Communications in Computer and Information Science, F. A. Sansone, C. Gusikhin, O. Madani, Eds., Cham, Switzerland: Springer, 2023, pp. 1-16.
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The SODALITE Model-Driven Approach

J. Gorroñogoitia, D. Radolović, Z. Vasileiou, G. Meditskos, A. Karakostas, S. Vrochidis, M. Bachras, "The SODALITE Model-Driven Approach.", in Deployment and Operation of Complex Software in Heterogeneous Execution Environments, E. Di Nitto, J. Gorroñogoitia Cruz, I. Kumara, D. Radolović, K. Tokmakov, and Z. Vasileiou, Eds., Cham, Switzerland: Springer, July 2022, pp. 23–52. DOI:https://doi.org/10.1007/978-3-031-04961-3
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Quality Assurance and Design-Time Optimization

I. Kumara, A. Lazzaro, N. Mujkanovic, Z. Vasileiou, D. Tamburri, "Quality Assurance and Design-Time Optimization.", in Deployment and Operation of Complex Software in Heterogeneous Execution Environments, E. Di Nitto, J. G. Cruz, I. Kumara, D. Radolović, K. Tokmakov, and Z. Vasileiou, Eds., Cham, Switzerland: Springer, July 2022, pp. 53–66. DOI:https://doi.org/10.1007/978-3-031-04961-3
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The Threat of Behavioral Radicalization Online: Conceptual Challenges and Technical Solutions Provided by the PROPHETS (Preventing Radicalization Online through the Proliferation of Harmonized ToolkitS) Project

R. Karlović, H. Nitsch, E. Fikenscher, D. Osterman, S. Menexis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, A. Sahar, "The Threat of Behavioral Radicalization Online: Conceptual Challenges and Technical Solutions Provided by the PROPHETS (Preventing Radicalization Online through the Proliferation of Harmonized ToolkitS) Project.", in Security Technologies and Social Implications: A European Perspective, G. Markarian, R. Karlović, H. Nitsch, and K. Chandramouli, Eds., 2022 (accepted for publication).
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Cybersecurity in Next Generation Energy Grids: Challenges and Opportunities for Blockchain and AI Technologies

N. Mengidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Cybersecurity in Next Generation Energy Grids: Challenges and Opportunities for Blockchain and AI Technologies.", in Digital Transformation, Cyber Security and Resilience of Modern Societies, T. Tagarev, K. T. Atanassov, V. Kharchenko, and J. Kacprzyk, Eds., Studies in Big Data, vol 84. Springer, Cham, pp. 299-314. DOI:https://doi.org/10.1007/978-3-030-65722-2_18
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Sensor Data Fusion and Autonomous Unmanned Vehicles for the Protection of Critical Infrastructures

K. Ioannidis, G. Orfanidis, M. Krestenitis, S. Vrochidis, I. Kompatsiaris, "Sensor Data Fusion and Autonomous Unmanned Vehicles for the Protection of Critical Infrastructures.", in Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for Protection of Critical Infrastructures Against Explosives and CBRN, NATO Science for Peace and Security Series B: Physics and Biophysics, Springer Netherlands, 2021, pp. 3–17.
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T-Learning Technologies

S. Vrochidis, F. Bellotti, G. Bo, Linda Napoletano, I. Kompatsiaris, "T-Learning Technologies", in Encyclopedia of Information Science and Technology (2nd Edition), Mehdi Khosrow-Pour, Eds., IGI Global, vol. VIII, 1 October, 2008, pp. 3765-3771.
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An Integrated Framework for Personalized t-learning

F. Bellotti, S. Vrochidis, M. Pellegrino, I. Tsampoulatidis, P. Lhoas, G. Bo, A. De Gloria, I. Kompatsiaris, "An Integrated Framework for Personalized t-learning", in Cases on Transnational Learning and Technologically Enabled Environments, S. Mukerji and P. Tripathi, Eds., IGI Global, 31 January, 2010, pp. 118–135.
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Enhancing Patent Search with Content-based Image Retrieval

S. Vrochidis, A. Moumtzidou, I. Kompatsiaris, "Enhancing Patent Search with Content-based Image Retrieval", in Professional Search in the Modern World, Paltoglou, G., Loizides, F., Hansen, P., Eds., Lecture Notes in Computer Science vol. 8830, Springer, Cham, 31 January, 2014, pp 250-273.
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OSINT and the Dark Web

G. Kalpakis, T. Tsikrika, N. Cunningham, C. Iliou, S. Vrochidis, J. Middleton, I. Kompatsiaris, "OSINT and the Dark Web", in Open Source Intelligence Investigation: From Strategy to Implementation, B. Akhgar, P. S. Bayerl, F. Sampson, Eds., Cham, Switzerland: Springer, 3 January, 2017, pp. 111–132.
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Towards improved air quality monitoring using publicly available sky images

E. Spyromitros-Xioufis, A. Moumtzidou, S. Papadopoulos, S. Vrochidis, Y. Kompatsiaris, A. K. Georgoulias, G. Alexandri, K. Kourtidis, "Towards improved air quality monitoring using publicly available sky images", in Multimedia Technologies for Environmental & Biodiversity Informatics, Joly, A., Vrochidis, S., Karatzas, K., Karppinen, A., Bonnet, P. Eds., Multimedia Systems and Applications, Springer, Cham, 20 June, 2018, pp. 67–92.
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Analysis of Suspended Terrorism-Related Content on Social Media

G. Kalpakis, T. Tsikrika, I. Gialampoukidis, S. Papadopoulos, S. Vrochidis, I. Kompatsiaris, "Analysis of Suspended Terrorism-Related Content on Social Media", in Community-Oriented Policing and Technological Innovations, G. Leventakis and M. R. Haberfeld, Eds., Cham, Switzerland: Springer, 27 April, 2018, pp. 107–118.
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Query reformulation based on word embeddings: A comparative study

P. Panagiotou, G. Kalpakis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Query reformulation based on word embeddings: A comparative study", in Technology Advances and Support for Security Practitioners, B. Akhgar, D. Kavallieros, and E. Sdongos, Eds., Security Informatics and Law Enforcement, Springer, 2021.
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IoT and Semantic Web Technologies

A. Chatzimichail, E. Stathopoulos, D. Ntioudis, A. Tsanousa, M. Rousi, A. Mavropoulos, G. Meditskos, S. Vrochidis, I. Kompatsiaris, "IoT and Semantic Web Technologies.", in Semantic IoT: Theory and Applications - Interoperability, Provenance and Beyond, Studies in Computational Intelligence, Springer, 2020, p. 3-33.
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Towards to integrate a multi-layer Machine Learning Data Fusion approach into Crisis Classification and Risk Assessment of extreme natural events

G. Antzoulatos, I. Koulalis, A. Karakostas, S. Vrochidis, I. Kompatsiaris, "Towards integrating a multi-layer Machine Learning Data Fusion approach into Crisis Classification and Risk Assessment of extreme natural events", in Technology Development for Security Practitioners, B. Akhgar, D. Kavallieros, and E. Sdongos, Eds., Springer, Security Informatics and Law Enforcement Series, 2021.
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