CONNEXIONs – Multimodal Data Fusion and Analytics Group

Real-time Threat Assessment based on Hidden Markov Models

O. Theodosiadou, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Real-time Threat Assessment based on Hidden Markov Models", Risk Analysis 2023, vol. 43, no. 10, pp. 2069-2081, October 2023. https://doi.org/10.1111/risa.14105

Selective Word Substitution for Contextualized Data Augmentation

K. Pantelidou, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Selective Word Substitution for Contextualized Data Augmentation.", in Proceedings of the 27th International Conference on Natural Language & Information Systems (NLDB), Valencia, Spain, 15-17 June 2022, pp.508-516.

M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2021

A. M. Koufakis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2021.",in Proceedings of the Text REtrieval Conference (TREC).

ITI-CERTH participation in ActEV and AVS Tracks of TRECVID 2021

K. Gkountakos, D. Galanopoulos, D. Touska, K. Ioannidis, S. Vrochidis, V. Mezaris, I. Kompatsiaris, "ITI-CERTH participation in ActEV and AVS Tracks of TRECVID 2021.", in Proceedings of the TRECVID 2021 Workshop, Gaithersburg, MD, USA (Virtual), 2021.

Study of 3D Digitisation Modalities for Crime Scene Investigation

G. Galanakis, X. Zabulis, T. Evdaimon, S.-E. Fikenscher, S. Allertseder, T. Tsikrika, S. Vrochidis, "A Study of 3D Digitisation Modalities for Crime Scene Investigation.", Forensic Sci., vol. 1, no. 2, pp. 56-85, 2021.

Spatio-temporal activity detection and recognition in untrimmed surveillance videos

K. Gkountakos, D. Touska, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Spatio-temporal activity detection and recognition in untrimmed surveillance videos.",in Proceedings of the 2021 International Conference on Multimedia Retrieval, August 2021.

Crowd Violence Detection from Video Footage

K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Crowd Violence Detection from Video Footage.", in Proceedings of the 2021 International Conference on Content-Based Multimedia Indexing (CBMI), IEEE, June 2021.

ITI-CERTH participation in TRECVID 2019

K. Gkountakos, K. Ioannidis, S. Vrochidis, I. Kompatsiaris, "ITI-CERTH participation in TRECVID 2019.", in Proceedings of the TRECVID 2019 Workshop, Gaithersburg, MD, USA, November 2019.

ITI-CERTH participation in TRECVID 2020

K. Gkountakos, D. Galanopoulos, M. Mpakratsas, D. Touska, A. Moumtzidou, K. Ioannidis, I. Gialampoukidis, S. Vrochidis, V. Mezaris, I. Kompatsiaris, "ITI-CERTH participation in TRECVID 2020.", in Proceedings of the TRECVID 2020 Workshop, Gaithersburg, MD, USA, December 2020.

Visual Recognition of Abnormal Activities in Video Streams

K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Visual Recognition of Abnormal Activities in Video Streams.", in Technology Development for Security Practitioners, Cham: Springer International Publishing, pp. 151-165.

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.

VERGE in VBS 2020

S. Andreadis, A. Moumtzidou, K. Apostolidis, K. Gkountakos, D. Galanopoulos, E. Michail, I. Gialampoukidis, S. Vrochidis, V. Mezaris, I. Kompatsiaris, "VERGE IN VBS 2020.", in Proceedings of the 26th Int. Conf. on Multimedia Modeling (MMM2020), Daejeon Convention Center (DCC), Korea, 5-8 January 2020.

A Crowd Analysis Framework for Detecting Violence Scenes

K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "A Crowd Analysis Framework for Detecting Violence Scenes.", in Proceedings of the 2020 International Conference on Multimedia Retrieval (ICMR ‘20), Dublin, Ireland, June 8–11, 2020, pp. 276 - 280.

Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach

A. Koufakis, D. Chatzakou, G. Meditskos, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach.", in Proceedings of the 1st International Workshop on IoT infrastructures for safety in pervasive environments (IoT4SAFE), Invited talk, 2 June, 2020.

A Case Study of NLG from Multimedia Data Sources: Generating Architectural Landmark Descriptions

S. Mille, S. Symeonidis, M. Rousi, M. Marimon Felipe, K. Stavrothanasopoulos, P. Alvanitopoulos, R. Carlini Salguero, J. Grivolla, G. Meditskos, S. Vrochidis, L. Wanner, "A Case Study of NLG from Multimedia Data Sources: Generating Architectural Landmark Descriptions.", in Proceedings of the WebNLG+: 3rd Workshop on Natural Language Generation from the Semantic Web, (INLG 2020), 15-18 December 2020.