The CONNEXIONs Open Access Repository can be found at: CONNEXIONs Zenodo Community

1) K. Pantelidou, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "Selective Word Substitution for Contextualized Data Augmentation". In Proc. of the 2022 International Conference on Natural Language & Information Systems (NLDB), Valencia, Spain, 15-17 June 2022, pdf

2) E. Cumberland and T. Day. "A Prescriptive Approach For Structured Information Extraction From Web Forums And Social Media". In Proc. of the 2021 International Symposium on Computer Science and Intelligent Controls (ISCSIC), Rome, Italy, 12-14 November 2021, pdf

3) A. Koufakis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2021". In Proc. Text REtrieval Conference (TREC), Virtual Event, November 2021, pdf

4) 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 Proc. TRECVID 2021 Workshop, Gaithersburg, MD, USA (Virtual), 2021, pdf

5) A. Kosmatopoulos, K. Loumponias, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. 2021. "Random-Walk Graph Embeddings and the Influence of Edge Weighting Strategies in Community Detection Tasks". In Proc. of the 2021 Workshop on Open Challenges in Online Social Networks (OASIS ’21), Virtual Event, Ireland. ACM, New York, NY, USA, 30 August 2021, pdf

6) K. Gkountakos, D. Touska, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "Spatio-temporal activity detection and recognition in untrimmed surveillance videos". In Proc. of the 2021 International Conference on Multimedia Retrieval, Taipei, Taiwan, 21-24 August 2021, pdf

7) L. Pérez-Mayos, A. T. García, S. Mille, L. Wanner. "Assessing the Syntactic Capabilities of Transformer-based Multilingual Language Models". In Findings of the Association for Computational Linguistics: ACL-IJCNLP, August 2021, pdf

8) 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 Sciences 2021, 1, 56–85. Basel, Switzerland, 30 July 2021, pdf

9) O. Theodosiadou, K. Pantelidou, N. Bastas, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "Change Point Detection in Terrorism-related Online Content Using Deep Learning derived Indicators". Information Special Issue Predictive Analytics and Illicit Activities, July 2021, pdf

10) K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "Crowd Violence Detection from Video Footage". In Proc. of 2021 International Conference on Content-Based Multimedia Indexing (CBMI) IEEE, Lille, France, 28-30 June 2021, pdf

11) C. Altobelli, N. Forgó, E. Johnson, A. Napieralski. "To Scrape or Not to Scrape? The Lawfulness of Social Media Crawling Under the GDPR". Deep Diving into Data Protection - 1979-2019 Celebrating 40 Years of Privacy and Data Protection at the CRIDS, Namur (Belgium), April 2021, pdf

12) L. Pérez-Mayos, R. Carlini, M. Ballesteros, L. Wanner. "On the evolution of syntactic information encoded by BERT’s contextualized representations". In Proc. of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, April 2021, pdf

13) 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 Proc. TRECVID 2020 Workshop,Gaithersburg, MD, USA, 2020, pdf

14) T. Ferreira, C. Gardent, N. Ilinykh, C. van der Lee, S. Mille, D. Moussallem, A. Shimorina. "The 2020 bilingual, bi-directional webnlg+ shared task overview and evaluation results (webnlg+ 2020)". In WebNLG+: 3rd Workshop on Natural Language Generation from the Semantic Web, 15-18 December, 2020, pdf

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

16) S. Mille, A. Belz, B. Bohnet, T. Castro Ferreira, Y. Graham, and L. Wanner. "The Third Multilingual Surface Realization Shared Task (SR'20): Overview and Evaluation Results". In Proc. of the 3rd Multilingual Surface Realization Workshop, co-located with COLING, Barcelona, Spain, 12 December 2020, pdf

17) K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. “A Crowd Analysis Framework for Detecting Violence Scenes”. ACM International Conference on Multimedia Retrieval (ICMR 2020), Dublin, Ireland, 26-29 October 2020, pdf

18) G. Galanakis, X. Zabulis, A. A. Argyros. "Unsupervised domain adaptation for person re-identification with few and unlabeled target data". ISVC 2020: 15th International Symposium on Visual Computing, San Diego, California USA, 5-7 October  2020, pdf

19) A. Shvets and L. Wanner. "Concept Extraction Using Pointer–Generator Networks and Distant Supervision for Data Augmentation". In Proc. of the 22nd International Conference on Knowledge Engineering and Knowledge Management, Bolzano, Italy, 16–20 September, 2020, pdf

20) D. Chatzakou, J. Soler-Company, T. Tsikrika, L. Wanner, S. Vrochidis, I. Kompatsiaris. “User Identity Linkage in Social Media Using Linguistic and Social Interaction Features”. In Proc. of the 12th ACM Web Science Conference 2020 (WebSci 2020), Southampton, UK, 7-10 July 2020, pdf

21) A. Koufakis, D. Chatzakou, G. Meditskos, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. ''Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach''. 1st International Workshop on IoT infrastructures for safety in pervasive environments (IoT4SAFE 2020), Heraklion, 2 June, 2020, pdf

22) P. Fortuna, J. Soler, L. Wanner. "Toxic, Hateful, Offensive or Abusive? What Are We Really Classifying? An Empirical Analysis of Hate Speech Datasets". In Proc. of the 12th Language Resources and Evaluation Conference, Marseille, 11–16 May 2020, pdf

23) P. Panagiotou, G. Kalpakis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. “Query reformulation based on word embeddings: A comparative study".  In "Technology Development for Security Practitioners” of the ''Security Informatics and Law Enforcement'' book series, pdf

24) K. Gkountakos, K. Ioannidis, T. Tsikrika, S. Vrochidis, I. Kompatsiaris. "Visual Recognition of Abnormal Activities in Video Streams”. In “Technology Advances and Support for Security Practitioners” of the ''Security Informatics and Law Enforcement'' book series, pdf

25) 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 Proc. of the 26th International Conference on Multimedia Modeling (MMM 2020), Daejeon, South Korea, 5-8 January 2020, pdf

26) K. Gkountakos, K. Ioannidis, S. Vrochidis, I. Kompatsiaris. "ITI-CERTH participation in TRECVID 2019". In Proc. TRECVID 2019 Workshop,Gaithersburg, MD, USA, 2019, pdf

27) M. Domínguez Bajo, P. L. Rohrer, J. Soler-Company. ''PyToBI: a toolkit for ToBI labeling under Python''. In Proc. of the 2019 Annual Conference of the International Speech Communication Association (Interspeech 2019), Graz, Austria, 15-19 September 2019, pdf

28) G. Galanakis, X. Zabulis, A.A. Argyros. "Novelty Detection for Person Re-identification in an Open World". In Proc. of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP 2019), Prague, Czech Republic, 25-27 February 2019, pdf