Theodora Tsikrika

120 papers A* 1A 7B 12C 5Misc 12Journal 26Unranked 50

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	A Comprehensive Survey and Taxonomy of Cybersecurity Challenges and Proactive Measures for IoD. ACM Comput. Surv. Arnolnt Spyros, Periklis Chatzimisios, Dimitrios Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Yiannis Kompatsiaris
2025	—	`conf`	A Multi-Task Text Classification Pipeline with Natural Language Explanations for Greek Tweets. MDTT Nikolaos Mylonas, Nikolaos Stylianou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	J	`jnl`	A comprehensive survey of manual and dynamic approaches for cybersecurity taxonomy generation. Knowl. Inf. Syst. Arnolnt Spyros, Anna Kougioumtzidou, Angelos Papoutsis, Eleni Darra, Dimitrios Kavallieros, Athanasios Tziouvaras, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	J	`jnl`	A deep one-class classifier for network anomaly detection using autoencoders and one-class support vector machines. Frontiers Comput. Sci. Polyzois Bountzis, Dimitris Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	J	`jnl`	AI-Based Holistic Framework for Cyber Threat Intelligence Management. IEEE Access Arnolnt Spyros, Ilias Koritsas, Angelos Papoutsis, Panos Panagiotou, Despoina Chatzakou, Dimitrios Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	Misc	`conf`	CTI-GEN: A Framework for Generating STIX 2.1 Compliant CTI Using Generative AI. CSR Angelos Papoutsis, Athanasios Dimitriadis, Dimitrios Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris, Georgios Meditskos
2025	J	`jnl`	EVACTI: evaluating the actionability of cyber threat intelligence. Int. J. Inf. Sec. Athanasios Dimitriadis, Angelos Papoutsis, Dimitrios Kavalieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	—	`conf`	Efficient Multi-Criteria Important Node Identification via Ego-Network Approximation. SNAMS Andreas Kosmatopoulos, Taxiarchis Skouras, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	J	`jnl`	Enhancing Change Point Detection Through Key Actor Identification: A Study in Cryptocurrency Transactions Networks. IEEE Access Ourania Theodosiadou, Andreas Kosmatopoulos, Christos Gkiourtzidis, Taxiarchis Skouras, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2025	Misc	`conf`	RuleXploit: A Framework for Generating Suricata Rules from Exploits Using Generative AI. CSR Angelos Papoutsis, Athanasios Dimitriadis, Ilias Koritsas, Dimitrios Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	J	`jnl`	A Multi-Task Text Classification Pipeline with Natural Language Explanations: A User-Centric Evaluation in Sentiment Analysis and Offensive Language Identification in Greek Tweets. CoRR Nikolaos Mylonas, Nikolaos Stylianou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	Misc	`conf`	An End-to-End Framework for Cybersecurity Taxonomy and Ontology Generation and Updating. CSR Anna Kougioumtzidou, Angelos Papoutsis, Dimitrios Kavallieros, Thanassis Mavropoulos, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	—	`conf`	Bias Detection and Mitigation in Textual Data: A Study on Fake News and Hate Speech Detection. ECIR (3) Apostolos Kasampalis, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	—	`conf`	Cross-Domain Hate Speech Detection for Content Moderation in Greek Social Networks. WI/IAT Nikolaos Stylianou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	J	`jnl`	From Research to Applications: What Can We Extract with Social Media Sensing? SN Comput. Sci. Aristeidis Bozas, Stelios Andreadis, Despoina Chatzakou, Spyridon Symeonidis, Ourania Theodosiadou, Pantelis Kyriakidis, Alexandros Kokkalas, Evangelos A. Stathopoulos, Sotiris Diplaris, Theodora Tsikrika, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris
2024	J	`jnl`	Towards AI-Driven Prediction of Terrorism Risk Based on the Analysis of Localized Web News. IEEE Access Georgios Koutidis, Kostas Loumponias, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2023	—	`conf`	Domain-Aligned Data Augmentation for Low-Resource and Imbalanced Text Classification. ECIR (2) Nikolaos Stylianou, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2023	—	`ed.`	Experimental IR Meets Multilinguality, Multimodality, and Interaction - 14th International Conference of the CLEF Association, CLEF 2023, Thessaloniki, Greece, September 18-21, 2023, Proceedings CLEF Avi Arampatzis, Evangelos Kanoulas, Theodora Tsikrika, Stefanos Vrochidis, Anastasia Giachanou, Dan Li, Mohammad Aliannejadi, Michalis Vlachos, Guglielmo Faggioli, Nicola Ferro
2023	C	`conf`	Forecasting Cyber-Attacks to Destination Ports Using Machine Learning. ICISSP Kostas Loumponias, Sotiris Raptis, Eleni Darra, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2023	—	`conf`	Graph-Based Data Association in Multiple Object Tracking: A Survey. MMM (2) Despoina Touska, Konstantinos Gkountakos, Theodora Tsikrika, Konstantinos Ioannidis, Stefanos Vrochidis, Ioannis Kompatsiaris
2023	J	`jnl`	Report on the 14th Conference and Labs of the Evaluation Forum (CLEF 2023): Experimental IR Meets Multilinguality, Multimodality, and Interaction. SIGIR Forum Mohammad Aliannejadi, Avi Arampatzis, Guglielmo Faggioli, Nicola Ferro, Anastasia Giachanou, Evangelos Kanoulas, Dan Li, Theodora Tsikrika, Michalis Vlachos, Stefanos Vrochidis
2023	—	`conf`	Trend Detection in Crime-Related Time Series with Change Point Detection Methods. CLEF Apostolos Konstantinou, Despoina Chatzakou, Ourania Theodosiadou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2023	J	`jnl`	User Identity Linkage in Social Media Using Linguistic and Social Interaction Features. CoRR Despoina Chatzakou, Juan Soler Company, Theodora Tsikrika, Leo Wanner, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	—	`conf`	A Faster Converging Negative Sampling for the Graph Embedding Process in Community Detection and Link Prediction Tasks. DeLTA Kostas Loumponias, Andreas Kosmatopoulos, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	B	`conf`	Automatic Visual Recognition of Unexploded Ordnances Using Supervised Deep Learning. ICMR Georgios Begkas, Panagiotis Giannakeris, Konstantinos Ioannidis, Georgios Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	Misc	`conf`	Host-based Cyber Attack Pattern Identification on Honeypot Logs Using Association Rule Learning. CSR Angelos Papoutsis, Christos Iliou, Dimitris Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	Misc	`conf`	ICT in Healthcare: the role of IoT and the SECANT solution. CSR M. Caballero, Dimitris Kavallieros, Arnolnt Spyros, A. Tavernarakisv, Athanasios Tziouvaras, Stefano Bonacina, K. Chandrarmouli, M. Coroiu, L. Chen, T. Dounia, Ioannis Giannoulakis, N. Gligoric, Emmanouil Kafetzakis, T. Kasig, Vaios Koumaras, T. Krousarlis, K. Lapidaki, A. Markakis, S. Marin, Mark Manulis, Sofia-Anna Menesidou, Sokratis Nifakos, L. Meng, S. Mhiri, M. Nati, K. Ntafloukas, D. Oniga, Dimitrios Papamartzivanos, Spyros Papastergiou, K. Sanchez, Christos Sakkas, K. Stelliou, L. Trujillo, Theodora Tsikrika, E. Venegas, Stefanos Vrochidis, D. Xydias
2022	B	`conf`	Identification of Key Actor Nodes: A Centrality Measure Ranking Aggregation Approach. ASONAM Andreas Kosmatopoulos, Kostas Loumponias, Ourania Theodosiadou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	Misc	`conf`	Leveraging Cyber Ranges for Prototyping, Certification and Training: The ECHO case. CSR Notis Mengidis, Maya Bozhilova, Cyril Ceresola, Consuelo Assunta Colabuono, Michael Cooke, Grégory Depaix, Angel Genchev, Georgi Koykov, Wim Mees, Matteo Merialdo, Antonis Voulgaridis, Theodora Tsikrika, Konstantinos Votis, Stefanos Vrochidis
2022	—	`conf`	Leveraging Transformer Self Attention Encoder for Crisis Event Detection in Short Texts. ECIR (2) Pantelis Kyriakidis, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	—	`conf`	M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2022. TREC Alexandros-Michail Koufakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	—	`conf`	Modified SkipGram Negative Sampling Model for Faster Convergence of Graph Embedding. DeLTA (Selected Papers) Kostas Loumponias, Andreas Kosmatopoulos, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	C	`conf`	Selective Word Substitution for Contextualized Data Augmentation. NLDB Kyriaki Pantelidou, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	Misc	`conf`	Towards Continuous Enrichment of Cyber Threat Intelligence: A Study on a Honeypot Dataset. CSR Arnolnt Spyros, Angelos Papoutsis, Ilias Koritsas, Notis Mengidis, Christos Iliou, Dimitris Kavallieros, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	C	`conf`	Vehicle Color Identification Framework using Pixel-level Color Estimation from Segmentation Masks of Car Parts. IPAS Klearchos Stavrothanasopoulos, Konstantinos Gkountakos, Konstantinos Ioannidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2022	B	`conf`	Web Bot Detection Evasion Using Deep Reinforcement Learning. ARES Christos Iliou, Theodoros Kostoulas, Theodora Tsikrika, Vasilios Katos, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	J	`jnl`	Change Point Detection in Terrorism-Related Online Content Using Deep Learning Derived Indicators. Inf. Ourania Theodosiadou, Kyriaki Pantelidou, Nikolaos Bastas, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	C	`conf`	Crowd Violence Detection from Video Footage. CBMI Konstantinos Gkountakos, Konstantinos Ioannidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	Misc	`conf`	Cyber Security Certification Programmes. CSR Eleni-Constantina Davri, Eleni Darra, Isidoros Monogioudis, Athanasios Grigoriadis, Christos Iliou, Notis Mengidis, Theodora Tsikrika, Stefanos Vrochidis, Adamantini Peratikou, Helen Gibson, Damir Haskovic, Dimitrios Kavallieros, Evangelos Chaskos, Peng Zhao, Stavros Shiaeles, Nick Savage, Babak Akhgar, Xavier J. A. Bellekens, Mohamed Amine Ben Farah
2021	J	`jnl`	Detection of Advanced Web Bots by Combining Web Logs with Mouse Behavioural Biometrics. DTRAP Christos Iliou, Theodoros Kostoulas, Theodora Tsikrika, Vasilis Katos, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	Misc	`conf`	ECHO Federated Cyber Range: Towards Next-Generation Scalable Cyber Ranges. CSR Nikos Oikonomou, Notis Mengidis, Minas Spanopoulos-Karalexidis, Antonis Voulgaridis, Matteo Merialdo, Ivo Raisr, Kaarel Hanson, Paloma de La Vallée, Theodora Tsikrika, Stefanos Vrochidis, Konstantinos Votis
2021	—	`conf`	M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2021. TREC Alexandros-Michail Koufakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	Misc	`conf`	Named Entity Recognition in Cyber Threat Intelligence Using Transformer-based Models. CSR Pavlos Evangelatos, Christos Iliou, Thanassis Mavropoulos, Konstantinos Apostolou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	—	`conf`	Random-Walk Graph Embeddings and the Influence of Edge Weighting Strategies in Community Detection Tasks. OASIS@HT Andreas Kosmatopoulos, Kostas Loumponias, Despoina Chatzakou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	B	`conf`	Spatio-Temporal Activity Detection and Recognition in Untrimmed Surveillance Videos. ICMR Konstantinos Gkountakos, Despoina Touska, Konstantinos Ioannidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2021	Misc	`conf`	Towards Selecting Informative Content for Cyber Threat Intelligence. CSR Panos Panagiotou, Christos Iliou, Konstantinos Apostolou, Theodora Tsikrika, Stefanos Vrochidis, Periklis Chatzimisios, Ioannis Kompatsiaris
2021	Misc	`conf`	Web Bot Detection Evasion Using Generative Adversarial Networks. CSR Christos Iliou, Theodoros Kostoulas, Theodora Tsikrika, Vasilis Katos, Stefanos Vrochidis, Ioannis Kompatsiaris
2020	B	`conf`	A Crowd Analysis Framework for Detecting Violence Scenes. ICMR Konstantinos Gkountakos, Konstantinos Ioannidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2020	—	`conf`	An Extensible Framework for Interactive Real-Time Visualizations of Large-Scale Heterogeneous Multimedia Information from Online Sources. MMM (2) Aikaterini Katmada, George Kalpakis, Theodora Tsikrika, Stelios Andreadis, Stefanos Vrochidis, Ioannis Kompatsiaris
2020	—	`ed.`	Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings CLEF Avi Arampatzis, Evangelos Kanoulas, Theodora Tsikrika, Stefanos Vrochidis, Hideo Joho, Christina Lioma, Carsten Eickhoff, Aurélie Névéol, Linda Cappellato, Nicola Ferro
2020	—	`conf`	Invited keynote on IOT4SAFE 2020: Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach. IOT4SAFE@ESWC Alexandros Koufakis, Despoina Chatzakou, Georgios Meditskos, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2020	J	`jnl`	Report on CLEF 2020. SIGIR Forum Avi Arampatzis, Linda Cappellato, Carsten Eickhoff, Nicola Ferro, Hideo Joho, Evangelos Kanoulas, Christina Lioma, Aurélie Névéol, Theodora Tsikrika, Stefanos Vrochidis
2020	—	`conf`	User Identity Linkage in Social Media Using Linguistic and Social Interaction Features. WebSci Despoina Chatzakou, Juan Soler Company, Theodora Tsikrika, Leo Wanner, Stefanos Vrochidis, Ioannis Kompatsiaris
2019	—	`conf`	A Test Collection for Passage Retrieval Evaluation of Spanish Health-Related Resources. ECIR (2) Eleni Kamateri, Theodora Tsikrika, Spyridon Symeonidis, Stefanos Vrochidis, Wolfgang Minker, Yiannis Kompatsiaris
2019	—	`conf`	A comparative study of clustering methods using word embeddings. EISIC Nikolaos Bastas, George Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2019	—	`conf`	Deploying Semantic Web Technologies for Information Fusion of Terrorism-related Content and Threat Detection on the Web. WI (Companion) Panagiotis Mitzias, Efstratios Kontopoulos, James Staite, Tony Day, George Kalpakis, Theodora Tsikrika, Helen Gibson, Stefanos Vrochidis, Babak Akhgar, Ioannis Kompatsiaris
2019	—	`conf`	Identifying Terrorism-Related Key Actors in Multidimensional Social Networks. MMM (2) George Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2019	—	`ch.`	Multi-Lingual Retrieval of Pictures in ImageCLEF. Information Retrieval Evaluation in a Changing World Paul D. Clough, Theodora Tsikrika
2019	B	`conf`	Towards a framework for detecting advanced Web bots. ARES Christos Iliou, Theodoros Kostoulas, Theodora Tsikrika, Vasilis Katos, Stefanos Vrochidis, Yiannis Kompatsiaris
2018	—	`conf`	Adaptive Focused Crawling Using Online Learning - A Study on Content Related to Islamic Extremism. INSCI Christos Iliou, Theodora Tsikrika, George Kalpakis, Stefanos Vrochidis, Ioannis Kompatsiaris
2018	—	`ch.`	Aggregation-Based Structured Text Retrieval. Encyclopedia of Database Systems (2nd ed.) Theodora Tsikrika
2018	B	`conf`	Network Analysis of the Science of Science: A Case Study in SOFSEM Conference. SOFSEM Antonia Gogoglou, Theodora Tsikrika, Yannis Manolopoulos
2017	A	`conf`	1st International Workshop on Search and Mining Terrorist Online Content & Advances in Data Science for Cyber Security and Risk on the Web. WSDM Theodora Tsikrika, Babak Akhgar, Vasilis Katos, Stefanos Vrochidis, Pete Burnap, Matthew L. Williams
2017	—	`conf`	A Hybrid Recommendation System Based on Density-Based Clustering. INSCI Workshops Theodora Tsikrika, Spyridon Symeonidis, Ilias Gialampoukidis, Anna Satsiou, Stefanos Vrochidis, Ioannis Kompatsiaris
2017	—	`conf`	A Monitoring Tool for Terrorism-Related Key-Players and Key-Communities in Social Media Networks. EISIC Stelios Andreadis, Ilias Gialampoukidis, George Kalpakis, Theodora Tsikrika, Symeon Papadopoulos, Stefanos Vrochidis, Ioannis Kompatsiaris
2017	—	`conf`	Detection of Terrorism-related Twitter Communities using Centrality Scores. MFSec@ICMR Ilias Gialampoukidis, George Kalpakis, Theodora Tsikrika, Symeon Papadopoulos, Stefanos Vrochidis, Ioannis Kompatsiaris
2017	J	`jnl`	Hybrid focused crawling on the Surface and the Dark Web. EURASIP J. Inf. Secur. Christos Iliou, George Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2017	J	`jnl`	Multimedia retrieval based on non-linear graph-based fusion and partial least squares regression. Multim. Tools Appl. Ilias Gialampoukidis, Anastasia Moumtzidou, Dimitris Liparas, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2016	—	`conf`	A Retrospective Study on the 20 Years of the ADBIS Conference. ADBIS (Short Papers and Workshops) Theodora Tsikrika, Yannis Manolopoulos
2016	—	`conf`	Community detection in complex networks based on DBSCAN* and a Martingale process. SMAP Ilias Gialampoukidis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2016	J	`jnl`	Focussed crawling of environmental Web resources based on the combination of multimedia evidence. Multim. Tools Appl. Theodora Tsikrika, Anastasia Moumtzidou, Stefanos Vrochidis, Ioannis Kompatsiaris
2016	B	`conf`	Hybrid Focused Crawling for Homemade Explosives Discovery on Surface and Dark Web. ARES Christos Iliou, George Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2016	—	`conf`	Interactive Discovery and Retrieval of Web Resources Containing Home Made Explosive Recipes. HCI (20) George Kalpakis, Theodora Tsikrika, Christos Iliou, Thodoris Mironidis, Stefanos Vrochidis, Jonathan Middleton, Una Williamson, Ioannis Kompatsiaris
2016	—	`conf`	Key Player Identification in Terrorism-Related Social Media Networks Using Centrality Measures. EISIC Ilias Gialampoukidis, George Kalpakis, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2016	B	`conf`	Retrieval of Multimedia Objects by Fusing Multiple Modalities. ICMR Ilias Gialampoukidis, Anastasia Moumtzidou, Theodora Tsikrika, Stefanos Vrochidis, Ioannis Kompatsiaris
2015	J	`jnl`	10th European Summer School in Information Retrieval (ESSIR 2015). SIGIR Forum Theodora Tsikrika, Symeon Papadopoulos, Stefanos Vrochidis, Yiannis Kompatsiaris
2015	B	`conf`	A Framework for the Discovery, Analysis, and Retrieval of Multimedia Homemade Explosives Information on the Web. ARES Theodora Tsikrika, George Kalpakis, Stefanos Vrochidis, Ioannis Kompatsiaris, Iraklis Paraskakis, Isaak Kavasidis, Jonathan Middleton, Una Williamson
2015	—	`conf`	A Unified Model for Socially Interconnected Multimedia-Enriched Objects. MMM (1) Theodora Tsikrika, Katerina Andreadou, Anastasia Moumtzidou, Emmanouil Schinas, Symeon Papadopoulos, Stefanos Vrochidis, Ioannis Kompatsiaris
2015	B	`conf`	Concept Detection in Multimedia Web Resources About Home Made Explosives. ARES George Kalpakis, Theodora Tsikrika, Fotini Markatopoulou, Nikiforos Pittaras, Stefanos Vrochidis, Vasileios Mezaris, Ioannis Patras, Ioannis Kompatsiaris
2015	—	`conf`	Discovery of Environmental Web Resources Based on the Combination of Multimedia Evidence. EMR@ICMR Theodora Tsikrika, Antonis Latas, Anastasia Moumtzidou, Elisavet Chatzilari, Stefanos Vrochidis, Yiannis Kompatsiaris
2014	—	`conf`	Focussed crawling of environmental web resources: A pilot study on the combination of multimedia evidence. EMR@ICMR Theodora Tsikrika, Anastasia Moumtzidou, Stefanos Vrochidis, Ioannis Kompatsiaris
2014	—	`conf`	Measuring and Analyzing the Scholarly Impact of Experimental Evaluation Initiatives. IRCDL Marco Angelini, Nicola Ferro, Birger Larsen, Henning Müller, Giuseppe Santucci, Gianmaria Silvello, Theodora Tsikrika
2014	A	`conf`	Multi-evidence User Group Discovery in Professional Image Search. ECIR Theodora Tsikrika, Christos Diou
2014	B	`conf`	Weighted SVM from clickthrough data for image retrieval. ICIP Ioannis A. Sarafis, Christos Diou, Theodora Tsikrika, Anastasios Delopoulos
2013	—	`conf`	The Scholarly Impact of CLEF (2000-2009). CLEF Theodora Tsikrika, Birger Larsen, Henning Müller, Stefan Endrullis, Erhard Rahm
2013	J	`jnl`	Topic modelling of clickthrough data in image search. Multim. Tools Appl. Donn Morrison, Theodora Tsikrika, Vera Hollink, Arjen P. de Vries, Eric Bruno, Stéphane Marchand-Maillet
2012	J	`jnl`	Building Reliable and Reusable Test Collections for Image Retrieval: The Wikipedia Task at ImageCLEF. IEEE Multim. Theodora Tsikrika, Jana Kludas, Adrian Popescu
2011	—	`conf`	Assessing the Scholarly Impact of ImageCLEF. CLEF Theodora Tsikrika, Alba Garcia Seco de Herrera, Henning Müller
2011	—	`conf`	Overview of the CLEF 2011 Medical Image Classification and Retrieval Tasks. CLEF (Notebook Papers/Labs/Workshop) Jayashree Kalpathy-Cramer, Henning Müller, Steven Bedrick, Ivan Eggel, Alba Garcia Seco de Herrera, Theodora Tsikrika
2011	—	`conf`	Overview of the Wikipedia Image Retrieval Task at ImageCLEF 2011. CLEF (Notebook Papers/Labs/Workshop) Theodora Tsikrika, Adrian Popescu, Jana Kludas
2011	J	`jnl`	Reliability and effectiveness of clickthrough data for automatic image annotation. Multim. Tools Appl. Theodora Tsikrika, Christos Diou, Arjen P. de Vries, Anastasios Delopoulos
2011	J	`jnl`	Semantic search log analysis: A method and a study on professional image search. J. Assoc. Inf. Sci. Technol. Vera Hollink, Theodora Tsikrika, Arjen P. de Vries
2010	—	`conf`	Differences in Video Search Behavior between Novices and Archivists. Adaptive Multimedia Retrieval Henning Rode, Theodora Tsikrika, Arjen P. de Vries
2010	—	`ed.`	Multilingual Information Access Evaluation II. Multimedia Experiments - 10th Workshop of the Cross-Language Evaluation Forum, CLEF 2009, Corfu, Greece, September 30 - October 2, 2009, Revised Selected Papers CLEF (2) Carol Peters, Barbara Caputo, Julio Gonzalo, Gareth J. F. Jones, Jayashree Kalpathy-Cramer, Henning Müller, Theodora Tsikrika
2010	—	`conf`	Overview of the Wikipedia Retrieval Task at ImageCLEF 2010. CLEF (Notebook Papers/LABs/Workshops) Adrian Popescu, Theodora Tsikrika, Jana Kludas
2010	—	`ch.`	The Wikipedia Image Retrieval Task. ImageCLEF Theodora Tsikrika, Jana Kludas
2010	—	`conf`	The semantics of query modification. RIAO Vera Hollink, Theodora Tsikrika, Arjen P. de Vries
2009	—	`ch.`	Aggregation-Based Structured Text Retrieval. Encyclopedia of Database Systems Theodora Tsikrika
2009	—	`conf`	CWI at the Photo Retrieval Task of ImageCLEF 2009. CLEF (Working Notes) Theodora Tsikrika, Arjen P. de Vries
2009	—	`conf`	Image annotation using clickthrough data. CIVR Theodora Tsikrika, Christos Diou, Arjen P. de Vries, Anastasios Delopoulos
2009	—	`conf`	Overview of the WikipediaMM Task at ImageCLEF 2009. CLEF (2) Theodora Tsikrika, Jana Kludas
2009	—	`conf`	Overview of the WikipediaMM Task at ImageCLEF 2009. CLEF (Working Notes) Theodora Tsikrika, Jana Kludas
2009	—	`conf`	VITALAS at TRECVID-2009. TRECVID Christos Diou, Nikos Dimitriou, Panagiotis Panagiotopoulos, Christos Papachristou, Anastasios Delopoulos, George Stephanopoulos, Henning Rode, Theodora Tsikrika, Arjen P. de Vries, Daniel Schneider, Jochen Schwenninger, Marie-Luce Viaud, Agnès Saulnier, Peter Altendorf, Birgit Schröter, Matthias Elser, Angel Rego, Alex Rodriguez, Cristina Martínez, Iñaki Etxaniz, Gérard Dupont, Bruno Grilhères, Nicolas Martin, Nozha Boujemaa, Alexis Joly, Raffi Enficiaud, Anne Verroust, Souheil Selmi, Mondher Khadhraoui
2008	—	`conf`	CWI at ImageCLEF 2008. CLEF (Working Notes) Theodora Tsikrika, Henning Rode, Arjen P. de Vries
2008	J	`jnl`	Multimedia retrieval at INEX 2007. SIGIR Forum Theodora Tsikrika, Thijs Westerveld
2008	—	`conf`	Overview of the WikipediaMM Task at ImageCLEF 2008. CLEF Theodora Tsikrika, Jana Kludas
2008	—	`conf`	Overview of the wikipediaMM task at ImageCLEF 2008. CLEF (Working Notes) Theodora Tsikrika, Jana Kludas
2008	—	`conf`	VITALAS at TRECVID-2008. TRECVID Christos Diou, Christos Papachristou, Panagiotis Panagiotopoulos, Anastasios Delopoulos, George Stephanopoulos, Nikos Dimitriou, Henning Rode, Arjen P. de Vries, Theodora Tsikrika, Robin Aly
2007	A	`conf`	Combining Evidence for Relevance Criteria: A Framework and Experiments in Web Retrieval. ECIR Theodora Tsikrika, Mounia Lalmas
2007	J	`jnl`	Examining topic shifts in content-oriented XML retrieval. Int. J. Digit. Libr. Elham Ashoori, Mounia Lalmas, Theodora Tsikrika
2007	—	`conf`	Structured Document Retrieval, Multimedia Retrieval, and Entity Ranking Using PF/Tijah. INEX Theodora Tsikrika, Pavel Serdyukov, Henning Rode, Thijs Westerveld, Robin Aly, Djoerd Hiemstra, Arjen P. de Vries
2007	—	`conf`	The INEX 2007 Multimedia Track. INEX Theodora Tsikrika, Thijs Westerveld
2006	J	`jnl`	A general matrix framework for modelling Information Retrieval. Inf. Process. Manag. Thomas Rölleke, Theodora Tsikrika, Gabriella Kazai
2006	A	`ed.`	Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings ECIR Mounia Lalmas, Andy MacFarlane, Stefan M. Rüger, Anastasios Tombros, Theodora Tsikrika, Alexei Yavlinsky
2006	A	`conf`	Progress in Information Retrieval. ECIR Mounia Lalmas, Stefan M. Rüger, Theodora Tsikrika, Alexei Yavlinsky
2006	A*	`conf`	User expectations from XML element retrieval. SIGIR Stamatina Betsi, Mounia Lalmas, Anastasios Tombros, Theodora Tsikrika
2005	C	`conf`	Modelling Good Entry Pages on the Web. ISMIS Theodora Tsikrika, Mounia Lalmas
2004	J	`jnl`	Combining evidence for Web retrieval using the inference network model: an experimental study. Inf. Process. Manag. Theodora Tsikrika, Mounia Lalmas
2002	A	`conf`	Combining Web Document Representations in a Bayesian Inference Network Model Using Link and Content-Based Evidence. ECIR Theodora Tsikrika, Mounia Lalmas
2001	A	`conf`	Merging Techniques for Performing Data Fusion on the Web. CIKM Theodora Tsikrika, Mounia Lalmas