Theodora Tsikrika

According to our database1, Theodora Tsikrika authored at least 79 papers between 2001 and 2022.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

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Bibliography

2022
Selective Word Substitution for Contextualized Data Augmentation.
Proceedings of the Natural Language Processing and Information Systems, 2022

Leveraging Transformer Self Attention Encoder for Crisis Event Detection in Short Texts.
Proceedings of the Advances in Information Retrieval, 2022

2021
Change Point Detection in Terrorism-Related Online Content Using Deep Learning Derived Indicators.
Inf., 2021

Spatio-Temporal Activity Detection and Recognition in Untrimmed Surveillance Videos.
Proceedings of the ICMR '21: International Conference on Multimedia Retrieval, 2021

Random-Walk Graph Embeddings and the Influence of Edge Weighting Strategies in Community Detection Tasks.
Proceedings of the OASIS@HT 2021: Proceedings of the 2021 Workshop on Open Challenges in Online Social Networks, 2021

Towards Selecting Informative Content for Cyber Threat Intelligence.
Proceedings of the IEEE International Conference on Cyber Security and Resilience, 2021

ECHO Federated Cyber Range: Towards Next-Generation Scalable Cyber Ranges.
Proceedings of the IEEE International Conference on Cyber Security and Resilience, 2021

Web Bot Detection Evasion Using Generative Adversarial Networks.
Proceedings of the IEEE International Conference on Cyber Security and Resilience, 2021

Named Entity Recognition in Cyber Threat Intelligence Using Transformer-based Models.
Proceedings of the IEEE International Conference on Cyber Security and Resilience, 2021


Crowd Violence Detection from Video Footage.
Proceedings of the 18th International Conference on Content-Based Multimedia Indexing, 2021

2020
Report on CLEF 2020.
SIGIR Forum, 2020

User Identity Linkage in Social Media Using Linguistic and Social Interaction Features.
Proceedings of the WebSci '20: 12th ACM Conference on Web Science, 2020

An Extensible Framework for Interactive Real-Time Visualizations of Large-Scale Heterogeneous Multimedia Information from Online Sources.
Proceedings of the MultiMedia Modeling - 26th International Conference, 2020

A Crowd Analysis Framework for Detecting Violence Scenes.
Proceedings of the 2020 on International Conference on Multimedia Retrieval, 2020

Invited keynote on IOT4SAFE 2020: Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach.
Proceedings of the Workshop on IOT Infrastructures for Safety in Pervasive Environments (IOT4SAFE 2020) co-located with 17th Extended Semantic Web Conference (ESWC 2020), 2020

2019
Deploying Semantic Web Technologies for Information Fusion of Terrorism-related Content and Threat Detection on the Web.
Proceedings of the 2019 IEEE/WIC/ACM International Conference on Web Intelligence, 2019

Identifying Terrorism-Related Key Actors in Multidimensional Social Networks.
Proceedings of the MultiMedia Modeling - 25th International Conference, 2019

A comparative study of clustering methods using word embeddings.
Proceedings of the European Intelligence and Security Informatics Conference, 2019

A Test Collection for Passage Retrieval Evaluation of Spanish Health-Related Resources.
Proceedings of the Advances in Information Retrieval, 2019

Towards a framework for detecting advanced Web bots.
Proceedings of the 14th International Conference on Availability, Reliability and Security, 2019

Multi-Lingual Retrieval of Pictures in ImageCLEF.
Proceedings of the Information Retrieval Evaluation in a Changing World, 2019

2018
Aggregation-Based Structured Text Retrieval.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Network Analysis of the Science of Science: A Case Study in SOFSEM Conference.
Proceedings of the SOFSEM 2018: Theory and Practice of Computer Science - 44th International Conference on Current Trends in Theory and Practice of Computer Science, Krems, Austria, January 29, 2018

Adaptive Focused Crawling Using Online Learning - A Study on Content Related to Islamic Extremism.
Proceedings of the Internet Science - 5th International Conference, 2018

2017
Multimedia retrieval based on non-linear graph-based fusion and partial least squares regression.
Multim. Tools Appl., 2017

Hybrid focused crawling on the Surface and the Dark Web.
EURASIP J. Inf. Secur., 2017

1st International Workshop on Search and Mining Terrorist Online Content & Advances in Data Science for Cyber Security and Risk on the Web.
Proceedings of the Tenth ACM International Conference on Web Search and Data Mining, 2017

Detection of Terrorism-related Twitter Communities using Centrality Scores.
Proceedings of the 2nd International Workshop on Multimedia Forensics and Security, 2017

A Hybrid Recommendation System Based on Density-Based Clustering.
Proceedings of the Internet Science, 2017

A Monitoring Tool for Terrorism-Related Key-Players and Key-Communities in Social Media Networks.
Proceedings of the European Intelligence and Security Informatics Conference, 2017

2016
Focussed crawling of environmental Web resources based on the combination of multimedia evidence.
Multim. Tools Appl., 2016

Community detection in complex networks based on DBSCAN* and a Martingale process.
Proceedings of the 11th International Workshop on Semantic and Social Media Adaptation and Personalization, 2016

Retrieval of Multimedia Objects by Fusing Multiple Modalities.
Proceedings of the 2016 ACM on International Conference on Multimedia Retrieval, 2016

Interactive Discovery and Retrieval of Web Resources Containing Home Made Explosive Recipes.
Proceedings of the Human Aspects of Information Security, Privacy, and Trust, 2016

Key Player Identification in Terrorism-Related Social Media Networks Using Centrality Measures.
Proceedings of the 2016 European Intelligence and Security Informatics Conference, 2016

A Retrospective Study on the 20 Years of the ADBIS Conference.
Proceedings of the New Trends in Databases and Information Systems, 2016

Hybrid Focused Crawling for Homemade Explosives Discovery on Surface and Dark Web.
Proceedings of the 11th International Conference on Availability, Reliability and Security, 2016

2015
10th European Summer School in Information Retrieval (ESSIR 2015).
SIGIR Forum, 2015

A Unified Model for Socially Interconnected Multimedia-Enriched Objects.
Proceedings of the MultiMedia Modeling - 21st International Conference, 2015

Discovery of Environmental Web Resources Based on the Combination of Multimedia Evidence.
Proceedings of the 2nd International Workshop on Environmental Multimedia Retrieval, 2015

A Framework for the Discovery, Analysis, and Retrieval of Multimedia Homemade Explosives Information on the Web.
Proceedings of the 10th International Conference on Availability, Reliability and Security, 2015

Concept Detection in Multimedia Web Resources About Home Made Explosives.
Proceedings of the 10th International Conference on Availability, Reliability and Security, 2015

2014
Focussed crawling of environmental web resources: A pilot study on the combination of multimedia evidence.
Proceedings of the 1st International Workshop on Environnmental Multimedia Retrieval co-located with ACM International Conference on Multimedia Retrieval, 2014

Measuring and Analyzing the Scholarly Impact of Experimental Evaluation Initiatives.
Proceedings of the Pushing the Boundaries of the Digital Libraries Field, 2014

Weighted SVM from clickthrough data for image retrieval.
Proceedings of the 2014 IEEE International Conference on Image Processing, 2014

Multi-evidence User Group Discovery in Professional Image Search.
Proceedings of the Advances in Information Retrieval, 2014

2013
Topic modelling of clickthrough data in image search.
Multim. Tools Appl., 2013

The Scholarly Impact of CLEF (2000-2009).
Proceedings of the Information Access Evaluation. Multilinguality, Multimodality, and Visualization, 2013

2012
Building Reliable and Reusable Test Collections for Image Retrieval: The Wikipedia Task at ImageCLEF.
IEEE Multim., 2012

2011
Reliability and effectiveness of clickthrough data for automatic image annotation.
Multim. Tools Appl., 2011

Semantic search log analysis: A method and a study on professional image search.
J. Assoc. Inf. Sci. Technol., 2011

Overview of the Wikipedia Image Retrieval Task at ImageCLEF 2011.
Proceedings of the CLEF 2011 Labs and Workshop, 2011

Assessing the Scholarly Impact of ImageCLEF.
Proceedings of the Multilingual and Multimodal Information Access Evaluation, 2011

Overview of the CLEF 2011 Medical Image Classification and Retrieval Tasks.
Proceedings of the CLEF 2011 Labs and Workshop, 2011

2010
The semantics of query modification.
Proceedings of the Recherche d'Information Assistée par Ordinateur, 2010

Overview of the Wikipedia Retrieval Task at ImageCLEF 2010.
Proceedings of the CLEF 2010 LABs and Workshops, 2010

Differences in Video Search Behavior between Novices and Archivists.
Proceedings of the Adaptive Multimedia Retrieval. Context, Exploration, and Fusion, 2010

The Wikipedia Image Retrieval Task.
Proceedings of the ImageCLEF, Experimental Evaluation in Visual Information Retrieval, 2010

2009
Aggregation-Based Structured Text Retrieval.
Proceedings of the Encyclopedia of Database Systems, 2009


CWI at the Photo Retrieval Task of ImageCLEF 2009.
Proceedings of the Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30, 2009

Overview of the WikipediaMM Task at ImageCLEF 2009.
Proceedings of the Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30, 2009

Image annotation using clickthrough data.
Proceedings of the 8th ACM International Conference on Image and Video Retrieval, 2009

2008
Multimedia retrieval at INEX 2007.
SIGIR Forum, 2008


CWI at ImageCLEF 2008.
Proceedings of the Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , 2008

Overview of the wikipediaMM task at ImageCLEF 2008.
Proceedings of the Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , 2008

2007
Examining topic shifts in content-oriented XML retrieval.
Int. J. Digit. Libr., 2007

The INEX 2007 Multimedia Track.
Proceedings of the Focused Access to XML Documents, 2007

Structured Document Retrieval, Multimedia Retrieval, and Entity Ranking Using PF/Tijah.
Proceedings of the Focused Access to XML Documents, 2007

Combining Evidence for Relevance Criteria: A Framework and Experiments in Web Retrieval.
Proceedings of the Advances in Information Retrieval, 2007

2006
A general matrix framework for modelling Information Retrieval.
Inf. Process. Manag., 2006

User expectations from XML element retrieval.
Proceedings of the SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2006

Progress in Information Retrieval.
Proceedings of the Advances in Information Retrieval, 2006

2005
Modelling Good Entry Pages on the Web.
Proceedings of the Foundations of Intelligent Systems, 15th International Symposium, 2005

2004
Combining evidence for Web retrieval using the inference network model: an experimental study.
Inf. Process. Manag., 2004

2002
Combining Web Document Representations in a Bayesian Inference Network Model Using Link and Content-Based Evidence.
Proceedings of the Advances in Information Retrieval, 2002

2001
Merging Techniques for Performing Data Fusion on the Web.
Proceedings of the 2001 ACM CIKM International Conference on Information and Knowledge Management, 2001


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