2023

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Domain-Aligned Data Augmentation for Low-Resource and Imbalanced Text Classification
Nikolaos Stylianou | Despoina Chatzakou | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part II

2022

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Automatic Visual Recognition of Unexploded Ordnances Using Supervised Deep Learning
Georgios Begkas | Panagiotis Giannakeris | Konstantinos Ioannidis | Georgios Kalpakis | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
ICMR '22: International Conference on Multimedia Retrieval, Newark, NJ, USA, June 27 - 30, 2022

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Leveraging Transformer Self Attention Encoder for Crisis Event Detection in Short Texts
Pantelis Kyriakidis | Despoina Chatzakou | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II

2021

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Spatio-Temporal Activity Detection and Recognition in Untrimmed Surveillance Videos
Konstantinos Gkountakos | Despoina Touska | Konstantinos Ioannidis | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
ICMR '21: International Conference on Multimedia Retrieval, Taipei, Taiwan, August 21-24, 2021

2020

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Report on CLEF 2020
Avi Arampatzis | Linda Cappellato | Carsten Eickhoff | Nicola Ferro | Hideo Joho | Evangelos Kanoulas | Christina Lioma | Aurélie Névéol | Theodora Tsikrika | Stefanos Vrochidis
2020 Volume 54 Issue 2

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A Crowd Analysis Framework for Detecting Violence Scenes
Konstantinos Gkountakos | Konstantinos Ioannidis | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
Proceedings of the 2020 on International Conference on Multimedia Retrieval, ICMR 2020, Dublin, Ireland, June 8-11, 2020

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Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings

Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings

2019

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A Test Collection for Passage Retrieval Evaluation of Spanish Health-Related Resources
Eleni Kamateri | Theodora Tsikrika | Spyridon Symeonidis | Stefanos Vrochidis | Wolfgang Minker | Yiannis Kompatsiaris
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part II

2017

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Detection of Terrorism-related Twitter Communities using Centrality Scores
Ilias Gialampoukidis | George Kalpakis | Theodora Tsikrika | Symeon Papadopoulos | Stefanos Vrochidis | Ioannis Kompatsiaris
Proceedings of the 2nd International Workshop on Multimedia Forensics and Security, MFSec@ICMR 2017, Bucharest, Romania, June 6, 2017

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1st International Workshop on Search and Mining Terrorist Online Content & Advances in Data Science for Cyber Security and Risk on the Web
Theodora Tsikrika | Babak Akhgar | Vasilis Katos | Stefanos Vrochidis | Pete Burnap | Matthew L. Williams
Proceedings of the Tenth ACM International Conference on Web Search and Data Mining, WSDM 2017, Cambridge, United Kingdom, February 6-10, 2017

2016

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Retrieval of Multimedia Objects by Fusing Multiple Modalities
Ilias Gialampoukidis | Anastasia Moumtzidou | Theodora Tsikrika | Stefanos Vrochidis | Ioannis Kompatsiaris
Proceedings of the 2016 ACM on International Conference on Multimedia Retrieval, ICMR 2016, New York, New York, USA, June 6-9, 2016

2015

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10th European Summer School in Information Retrieval (ESSIR 2015)
Theodora Tsikrika | Symeon Papadopoulos | Stefanos Vrochidis | Yiannis Kompatsiaris
2015 Volume 49 Issue 2

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Discovery of Environmental Web Resources Based on the Combination of Multimedia Evidence
Theodora Tsikrika | Antonis Latas | Anastasia Moumtzidou | Elisavet Chatzilari | Stefanos Vrochidis | Yiannis Kompatsiaris
Proceedings of the 2nd International Workshop on Environmental Multimedia Retrieval, EMR@ICMR 2015, Shanghai, China, June 23-26, 2015

2014

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Focussed crawling of environmental web resources: A pilot study on the combination of multimedia evidence
Theodora Tsikrika | Anastasia Moumtzidou | Stefanos Vrochidis | Ioannis Kompatsiaris
Proceedings of the 1st International Workshop on Environnmental Multimedia Retrieval co-located with ACM International Conference on Multimedia Retrieval, EMR@ICMR 2014, Glasgow, UK, April 1, 2014

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Multi-evidence User Group Discovery in Professional Image Search
Theodora Tsikrika | Christos Diou
Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings

2013

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The Scholarly Impact of CLEF (2000-2009)
Theodora Tsikrika | Birger Larsen | Henning Müller | Stefan Endrullis | Erhard Rahm
Information Access Evaluation. Multilinguality, Multimodality, and Visualization - 4th International Conference of the CLEF Initiative, CLEF 2013, Valencia, Spain, September 23-26, 2013. Proceedings

2011

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Semantic search log analysis: A method and a study on professional image search
Vera Hollink | Theodora Tsikrika | Arjen P. de Vries
2011 Volume 62 Issue 4

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Overview of the Wikipedia Image Retrieval Task at ImageCLEF 2011
Theodora Tsikrika | Adrian Popescu | Jana Kludas
CLEF 2011 Labs and Workshop, Notebook Papers, 19-22 September 2011, Amsterdam, The Netherlands

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Overview of the CLEF 2011 Medical Image Classification and Retrieval Tasks
Jayashree Kalpathy-Cramer | Henning Müller | Steven Bedrick | Ivan Eggel | Alba Garcia Seco de Herrera | Theodora Tsikrika
CLEF 2011 Labs and Workshop, Notebook Papers, 19-22 September 2011, Amsterdam, The Netherlands

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Assessing the Scholarly Impact of ImageCLEF
Theodora Tsikrika | Alba Garcia Seco de Herrera | Henning Müller
Multilingual and Multimodal Information Access Evaluation - Second International Conference of the Cross-Language Evaluation Forum, CLEF 2011, Amsterdam, The Netherlands, September 19-22, 2011. Proceedings

2010

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Overview of the Wikipedia Retrieval Task at ImageCLEF 2010
Adrian Popescu | Theodora Tsikrika | Jana Kludas
CLEF 2010 LABs and Workshops, Notebook Papers, 22-23 September 2010, Padua, Italy

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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

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

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The semantics of query modification
Vera Hollink | Theodora Tsikrika | Arjen P. de Vries
Recherche d'Information Assistée par Ordinateur, RIAO 2010: Adaptivity, Personalization and Fusion of Heterogeneous Information, 9th International Conference, Bibliotheque Nationale de France, Paris, France, April 28-30, 2010, Proceedings

2009

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Overview of the WikipediaMM Task at ImageCLEF 2009
Theodora Tsikrika | Jana Kludas
Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009

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CWI at the Photo Retrieval Task of ImageCLEF 2009
Theodora Tsikrika | Arjen P. de Vries
Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009

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Overview of the WikipediaMM Task at ImageCLEF 2009
Theodora Tsikrika | Jana Kludas
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

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Image annotation using clickthrough data
Theodora Tsikrika | Christos Diou | Arjen P. de Vries | Anastasios Delopoulos
Proceedings of the 8th ACM International Conference on Image and Video Retrieval, CIVR 2009, Santorini Island, Greece, July 8-10, 2009

2008

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Multimedia retrieval at INEX 2007
Theodora Tsikrika | Thijs Westerveld
2008 Volume 42 Issue 1

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Overview of the WikipediaMM Task at ImageCLEF 2008
Theodora Tsikrika | Jana Kludas
Evaluating Systems for Multilingual and Multimodal Information Access, 9th Workshop of the Cross-Language Evaluation Forum, CLEF 2008, Aarhus, Denmark, September 17-19, 2008, Revised Selected Papers

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Overview of the wikipediaMM task at ImageCLEF 2008
Theodora Tsikrika | Jana Kludas
Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , Aarhus, Denmark, September 17-19, 2008

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CWI at ImageCLEF 2008
Theodora Tsikrika | Henning Rode | Arjen P. de Vries
Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , Aarhus, Denmark, September 17-19, 2008

2007

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Combining Evidence for Relevance Criteria: A Framework and Experiments in Web Retrieval
Theodora Tsikrika | Mounia Lalmas
Advances in Information Retrieval, 29th European Conference on IR Research, ECIR 2007, Rome, Italy, April 2-5, 2007, Proceedings

2006

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A general matrix framework for modelling Information Retrieval
Thomas Rölleke | Theodora Tsikrika | Gabriella Kazai
2006 Volume 42 Issue 1

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User expectations from XML element retrieval
Stamatina Betsi | Mounia Lalmas | Anastasios Tombros | Theodora Tsikrika
SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006

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Progress in Information Retrieval
Mounia Lalmas | Stefan M. Rüger | Theodora Tsikrika | Alexei Yavlinsky
Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

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Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

2004

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Combining evidence for Web retrieval using the inference network model: an experimental study
Theodora Tsikrika | Mounia Lalmas
2004 Volume 40 Issue 5

2002

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Combining Web Document Representations in a Bayesian Inference Network Model Using Link and Content-Based Evidence
Theodora Tsikrika | Mounia Lalmas
Advances in Information Retrieval, 24th BCS-IRSG European Colloquium on IR Research Glasgow, UK, March 25-27, 2002 Proceedings

2001

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Merging Techniques for Performing Data Fusion on the Web
Theodora Tsikrika | Mounia Lalmas
Proceedings of the 2001 ACM CIKM International Conference on Information and Knowledge Management, Atlanta, Georgia, USA, November 5-10, 2001

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