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  1. Conference paper

    Overview of BioASQ 2025: The Thirteenth BioASQ Challenge on Large-Scale Biomedical Semantic Indexing and Question Answering

    This is an overview of the thirteenth edition of the BioASQ challenge in the context of the Conference and Labs of the Evaluation Forum (CLEF) 2025....
    Anastasios Nentidis, Georgios Katsimpras, ... Georgios Paliouras in Experimental IR Meets Multilinguality, Multimodality, and Interaction
    2026
  2. Article
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    Partially trained graph convolutional networks resist oversmoothing

    In this work we investigate an observation made by Kipf and Welling (5th International Conference on Learning Representations, 2017), who suggested...

    Dimitrios Kelesis, Dimitris Fotakis, Georgios Paliouras in Machine Learning
    22 August 2025 Open access
  3. Article
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    Analyzing the effect of residual connections to oversmoothing in graph neural networks

    The performance of Graph Neural Networks (GNNs) diminishes as their depth increases. That is mainly attributed to oversmoothing, which leads to...

    Dimitrios Kelesis, Dimitris Fotakis, Georgios Paliouras in Machine Learning
    11 July 2025 Open access
  4. Article
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    Reducing oversmoothing through informed weight initialization in graph neural networks

    In this work, we generalize the ideas of Kaiming initialization to Graph Neural Networks (GNNs) and propose a new scheme (G-Init) that reduces...

    Dimitrios Kelesis, Dimitris Fotakis, Georgios Paliouras in Applied Intelligence
    07 April 2025 Open access
  5. Conference paper

    BioASQ at CLEF2025: The Thirteenth Edition of the Large-Scale Biomedical Semantic Indexing and Question Answering Challenge

    During the last twelve years, the large-scale biomedical semantic indexing and question-answering challenge (BioASQ) has been pushing towards the...
    Anastasios Nentidis, Georgios Katsimpras, ... Georgios Paliouras in Advances in Information Retrieval
    2025
  6. Article

    Calibrating TabTransformer for financial misstatement detection

    In this paper, we deal with the task of identifying the probability of misstatements in the annual financial reports of public companies. In...

    Elias Zavitsanos, Dimitrios Kelesis, Georgios Paliouras in Applied Intelligence
    18 November 2024
  7. Article
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    ENTRANT: A Large Financial Dataset for Table Understanding

    Tabular data is a way to structure, organize, and present information conveniently and effectively. Real-world tables present data in two dimensions...

    Elias Zavitsanos, Dimitris Mavroeidis, ... Georgios Paliouras in Scientific Data
    13 August 2024 Open access
  8. Article
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    EURO-NMD registry: federated FAIR infrastructure, innovative technologies and concepts of a patient-centred registry for rare neuromuscular disorders

    Background

    The EURO-NMD Registry collects data from all neuromuscular patients seen at EURO-NMD's expert centres. In-kind contributions from three...

    Antonio Atalaia, Dagmar Wandrei, ... Teresinha Evangelista in Orphanet Journal of Rare Diseases
    14 February 2024 Open access
  9. Conference paper

    Learning Automata-Based Complex Event Patterns in Answer Set Programming

    Complex Event Recognition and Forecasting (CER/F) techniques attempt to detect, or even forecast ahead of time, event occurrences in streaming input...
    Nikos Katzouris, Georgios Paliouras in Inductive Logic Programming
    2024
  10. Conference paper

    Overview of BioASQ 2024: The Twelfth BioASQ Challenge on Large-Scale Biomedical Semantic Indexing and Question Answering

    This is an overview of the twelfth edition of the BioASQ challenge in the context of the Conference and Labs of the Evaluation Forum (CLEF) 2024....
    Anastasios Nentidis, Georgios Katsimpras, ... Georgios Paliouras in Experimental IR Meets Multilinguality, Multimodality, and Interaction
    2024
  11. Conference paper

    Efficient Complex Network Representation Using Prime Numbers

    In this work, we propose a novel representation of complex networks, which is compact and enables very efficient network analysis. Multi-relational...
    Konstantinos Bougiatiotis, Georgios Paliouras in Complex Networks & Their Applications XII
    2024
  12. Conference paper

    BioASQ at CLEF2024: The Twelfth Edition of the Large-Scale Biomedical Semantic Indexing and Question Answering Challenge

    The large-scale biomedical semantic indexing and question-answering challenge (BioASQ) aims at the continuous advancement of methods and tools to...
    Anastasios Nentidis, Anastasia Krithara, ... Elena Tutubalina in Advances in Information Retrieval
    2024
  13. Article
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    Online semi-supervised learning of composite event rules by combining structure and mass-based predicate similarity

    Symbolic event recognition systems detect event occurrences using first-order logic rules. Although existing online structure learning approaches...

    Evangelos Michelioudakis, Alexander Artikis, Georgios Paliouras in Machine Learning
    15 December 2023 Open access
  14. Article
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    Improving Graph Neural Networks by combining active learning with self-training

    In this paper, we propose a novel framework, called STAL, which makes use of unlabeled graph data, through a combination of Active Learning and...

    Georgios Katsimpras, Georgios Paliouras in Data Mining and Knowledge Discovery
    11 August 2023 Open access
  15. Article
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    Comparing methods for drug–gene interaction prediction on the biomedical literature knowledge graph: performance versus explainability

    This paper applies different link prediction methods on a knowledge graph generated from biomedical literature, with the aim to compare their ability...

    Fotis Aisopos, Georgios Paliouras in BMC Bioinformatics
    30 June 2023 Open access
  16. Article
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    BioASQ-QA: A manually curated corpus for Biomedical Question Answering

    The BioASQ question answering (QA) benchmark dataset contains questions in English, along with golden standard (reference) answers and related...

    Anastasia Krithara, Anastasios Nentidis, ... Georgios Paliouras in Scientific Data
    27 March 2023 Open access
  17. Conference paper

    Overview of BioASQ 2023: The Eleventh BioASQ Challenge on Large-Scale Biomedical Semantic Indexing and Question Answering

    This is an overview of the eleventh edition of the BioASQ challenge in the context of the Conference and Labs of the Evaluation Forum (CLEF) 2023....
    Anastasios Nentidis, Georgios Katsimpras, ... Georgios Paliouras in Experimental IR Meets Multilinguality, Multimodality, and Interaction
    2023
  18. Conference paper

    BioASQ at CLEF2023: The Eleventh Edition of the Large-Scale Biomedical Semantic Indexing and Question Answering Challenge

    The large-scale biomedical semantic indexing and question-answering challenge (BioASQ) aims at the continuous advancement of methods and tools to...
    Anastasios Nentidis, Anastasia Krithara, ... Martin Krallinger in Advances in Information Retrieval
    2023
  19. Article
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    Identifying the presence and severity of dementia by applying interpretable machine learning techniques on structured clinical records

    Background

    Dementia develops as cognitive abilities deteriorate, and early detection is critical for effective preventive interventions. However,...

    Akhilesh Vyas, Fotis Aisopos, ... Georgios Paliouras in BMC Medical Informatics and Decision Making
    17 October 2022 Open access
  20. Article

    Optimizing vessel trajectory compression for maritime situational awareness

    We present an open-source system that can optimize compressed trajectory representations for large fleets of vessels. We take into account the type...

    Giannis Fikioris, Kostas Patroumpas, ... Georgios Paliouras in GeoInformatica
    29 August 2022
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