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George Kalpakis
George Kalpakis
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Hybrid focused crawling for homemade explosives discovery on surface and dark web
C Iliou, G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
2016 11th International Conference on Availability, Reliability and Security …, 2016
272016
Key player identification in terrorism-related social media networks using centrality measures
I Gialampoukidis, G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
2016 European Intelligence and Security Informatics Conference (EISIC), 112-115, 2016
262016
An enhanced cyber attack attribution framework
N Pitropakis, E Panaousis, A Giannakoulias, G Kalpakis, RD Rodriguez, ...
Trust, Privacy and Security in Digital Business: 15th International …, 2018
242018
OSINT and the Dark Web
G Kalpakis, T Tsikrika, N Cunningham, C Iliou, S Vrochidis, J Middleton, ...
Open Source Intelligence Investigation: From Strategy to Implementation, 111-132, 2016
242016
Detection of terrorism-related twitter communities using centrality scores
I Gialampoukidis, G Kalpakis, T Tsikrika, S Papadopoulos, S Vrochidis, ...
Proceedings of the 2nd international workshop on multimedia forensics and …, 2017
232017
Hybrid focused crawling on the Surface and the Dark Web
C Iliou, G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
EURASIP Journal on Information Security 2017 (1), 1-13, 2017
182017
Interactive discovery and retrieval of web resources containing home made explosive recipes
G Kalpakis, T Tsikrika, C Iliou, T Mironidis, S Vrochidis, J Middleton, ...
Human Aspects of Information Security, Privacy, and Trust: 4th International …, 2016
82016
Deploying semantic Web technologies for information fusion of terrorism-related content and threat detection on the Web
P Mitzias, E Kontopoulos, J Staite, T Day, G Kalpakis, T Tsikrika, H Gibson, ...
IEEE/WIC/ACM International Conference on Web Intelligence-Companion Volume …, 2019
72019
Analysis of suspended terrorism-related content on social media
G Kalpakis, T Tsikrika, I Gialampoukidis, S Papadopoulos, S Vrochidis, ...
Community-oriented policing and technological innovations, 107-118, 2018
72018
Identifying terrorism-related key actors in multidimensional social networks
G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
MultiMedia Modeling: 25th International Conference, MMM 2019, Thessaloniki …, 2019
52019
A monitoring tool for terrorism-related key-players and key-communities in social media networks
S Andreadis, I Gialampoukidis, G Kalpakis, T Tsikrika, S Papadopoulos, ...
2017 European Intelligence and Security Informatics Conference (EISIC), 166-166, 2017
42017
Concept Detection in Multimedia Web Resources About Home Made Explosives
G Kalpakis, T Tsikrika, F Markatopoulou, N Pittaras, S Vrochidis, ...
2015 10th International Conference on Availability, Reliability and Security …, 2015
42015
A framework for the discovery, analysis, and retrieval of multimedia homemade explosives information on the Web
T Tsikrika, G Kalpakis, S Vrochidis, I Kompatsiaris, I Paraskakis, ...
2015 10th International Conference on Availability, Reliability and Security …, 2015
42015
Adaptive Focused Crawling Using Online Learning: A Study on Content Related to Islamic Extremism
C Iliou, T Tsikrika, G Kalpakis, S Vrochidis, I Kompatsiaris
Internet Science: 5th International Conference, INSCI 2018, St. Petersburg …, 2018
32018
A comparative study of clustering methods using word embeddings
N Bastas, G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
2019 European Intelligence and Security Informatics Conference (EISIC), 54-61, 2019
22019
Query Reformulation Based on Word Embeddings: A Comparative Study
P Panagiotou, G Kalpakis, T Tsikrika, S Vrochidis, I Kompatsiaris
Technology Development for Security Practitioners, 41-55, 2021
12021
An Extensible Framework for Interactive Real-Time Visualizations of Large-Scale Heterogeneous Multimedia Information from Online Sources
A Katmada, G Kalpakis, T Tsikrika, S Andreadis, S Vrochidis, ...
MultiMedia Modeling: 26th International Conference, MMM 2020, Daejeon, South …, 2020
12020
Tools for Discovering and Analyzing Web Resources Containing Homemade Explosive Information
G Kalpakis, C Iliou, T Tsikrika, S Symeonidis, S Vrochidis, I Kompatsiaris
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Articles 1–18