1 code implementation • 29 Oct 2024 • Spyridon Kantarelis, Konstantinos Thomas, Vassilis Lyberatos, Edmund Dervakos, Giorgos Stamou
Chord progressions encapsulate important information about music, pertaining to its structure and conveyed emotions.
no code implementations • 25 Oct 2024 • Christos Xypolopoulos, Guokan Shang, Xiao Fei, Giannis Nikolentzos, Hadi Abdine, Iakovos Evdaimon, Michail Chatzianastasis, Giorgos Stamou, Michalis Vazirgiannis
Large language models have evolved to process multiple modalities beyond text, such as images and audio, which motivates us to explore how to effectively leverage them for graph machine learning tasks.
no code implementations • 20 Oct 2024 • Nikitas Theodoropoulos, Giorgos Filandrianos, Vassilis Lyberatos, Maria Lymperaiou, Giorgos Stamou
To measure the effect of synthetic story data, we train LTG-BERT encoder models on a combined dataset of: a subset of TinyStories, story completions generated by GPT-Neo, and a subset of the BabyLM dataset.
1 code implementation • 24 Sep 2024 • Ioannis Panagiotopoulos, Giorgos Filandrianos, Maria Lymperaiou, Giorgos Stamou
Riddle-solving requires advanced reasoning skills, pushing LLMs to engage in abstract thinking and creative problem-solving, often revealing limitations in their cognitive abilities.
1 code implementation • 20 Sep 2024 • Konstantinos Thomas, Giorgos Filandrianos, Maria Lymperaiou, Chrysoula Zerva, Giorgos Stamou
Equivocation and ambiguity in public speech are well-studied discourse phenomena, especially in political science and analysis of political interviews.
no code implementations • 17 Sep 2024 • Orfeas Menis Mastromichalakis, Giorgos Filandrianos, Eva Tsouparopoulou, Dimitris Parsanoglou, Maria Symeonaki, Giorgos Stamou
This paper introduces a novel approach to studying occupation-related gender bias through the creation of the GOSt-MT (Gender and Occupation Statistics for Machine Translation) Knowledge Graph.
1 code implementation • 16 Sep 2024 • Theodoros Sotirou, Vassilis Lyberatos, Orfeas Menis Mastromichalakis, Giorgos Stamou
Multimodal models are critical for music understanding tasks, as they capture the complex interplay between audio and lyrics.
1 code implementation • 11 Sep 2024 • Alexandros Koulakos, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
The surge of state-of-the-art Transformer-based models has undoubtedly pushed the limits of NLP model performance, excelling in a variety of tasks.
1 code implementation • 10 Sep 2024 • Georgia Argyrou, Angeliki Dimitriou, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
Despite the provided fine-grained insights on the quality and relevance of generation, we extend the discussion on the importance of expert knowledge for the evaluation of artistic AI-generated datasets such as this one.
no code implementations • 12 Aug 2024 • Aristi Papastavrou, Maria Lymperaiou, Giorgos Stamou
In the rapidly evolving fields of natural language processing and computer vision, Visual Word Sense Disambiguation (VWSD) stands as a critical, yet challenging task.
1 code implementation • 4 Aug 2024 • Dimitris Lymperopoulos, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
As NLP models become increasingly integral to decision-making processes, the need for explainability and interpretability has become paramount.
1 code implementation • 20 Jul 2024 • Georgia Argyrou, Angeliki Dimitriou, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
Emphasizing adaptability in AI-driven fashion creativity, we depart from traditional approaches and focus on prompting techniques, such as zero-shot and few-shot learning, as well as Chain-of-Thought (CoT), which results in a variety of colors and textures, enhancing the diversity of the outputs.
1 code implementation • 18 Jul 2024 • Orfeas Menis-Mastromichalakis, Giorgos Filandrianos, Jason Liartis, Edmund Dervakos, Giorgos Stamou
As machine learning (ML) models and datasets increase in complexity, the demand for methods that enhance explainability and interpretability becomes paramount.
no code implementations • 19 May 2024 • Orfeas Menis-Mastromichalakis, Natasa Sofou, Giorgos Stamou
We also discuss the impact of the data and art styles themselves on the performance of our models forming a manifold perspective on the problem.
no code implementations • 12 Apr 2024 • Orfeas Menis Mastromichalakis, Jason Liartis, Giorgos Stamou
Explainable Artificial Intelligence (XAI) has emerged as a critical area of research aimed at enhancing the transparency and interpretability of AI systems.
1 code implementation • 1 Apr 2024 • Natalia Grigoriadou, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
In this paper, we present our team's submissions for SemEval-2024 Task-6 - SHROOM, a Shared-task on Hallucinations and Related Observable Overgeneration Mistakes.
1 code implementation • 1 Apr 2024 • Ioannis Panagiotopoulos, Giorgos Filandrianos, Maria Lymperaiou, Giorgos Stamou
In this paper, we outline our submission for the SemEval-2024 Task 9 competition: 'BRAINTEASER: A Novel Task Defying Common Sense'.
1 code implementation • 13 Mar 2024 • Christos Papadimitriou, Giorgos Filandrianos, Maria Lymperaiou, Giorgos Stamou
Story Visualization (SV) is a challenging generative vision task, that requires both visual quality and consistency between different frames in generated image sequences.
1 code implementation • 11 Mar 2024 • Angeliki Dimitriou, Maria Lymperaiou, Giorgos Filandrianos, Konstantinos Thomas, Giorgos Stamou
With a focus on the visual domain, we represent images as scene graphs and obtain their GNN embeddings to bypass solving the NP-hard graph similarity problem for all input pairs, an integral part of the CE computation process.
no code implementations • 17 Feb 2024 • Panagiotis Giadikiaroglou, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
Exploring the capabilities of Large Language Models (LLMs) in puzzle solving unveils critical insights into their potential and challenges in AI, marking a significant step towards understanding their applicability in complex reasoning tasks.
no code implementations • 21 Jan 2024 • Angeliki Dimitriou, Nikolaos Chaidos, Maria Lymperaiou, Giorgos Stamou
Counterfactuals have been established as a popular explainability technique which leverages a set of minimal edits to alter the prediction of a classifier.
1 code implementation • 18 Dec 2023 • Vassilis Lyberatos, Spyridon Kantarelis, Edmund Dervakos, Giorgos Stamou
In the age of music streaming platforms, the task of automatically tagging music audio has garnered significant attention, driving researchers to devise methods aimed at enhancing performance metrics on standard datasets.
1 code implementation • 21 Oct 2023 • Anastasia Kritharoula, Maria Lymperaiou, Giorgos Stamou
We also study VWSD as a unimodal problem by converting to text-to-text and image-to-image retrieval, as well as question-answering (QA), to fully explore the capabilities of relevant models.
1 code implementation • 3 Oct 2023 • Anastasia Kritharoula, Maria Lymperaiou, Giorgos Stamou
Visual Word Sense Disambiguation (VWSD) is a novel challenging task that lies between linguistic sense disambiguation and fine-grained multimodal retrieval.
1 code implementation • 12 Jun 2023 • Vassilis Lyberatos, Spyridon Kantarelis, Eirini Kaldeli, Spyros Bekiaris, Panagiotis Tzortzis, Orfeas Menis - Mastromichalakis, Giorgos Stamou
The campaign's results and the comments gathered through an online survey enable us to draw some useful insights about the benefits and challenges of integrating crowdsourcing into computer science curricula and how this can enhance students' engagement in the learning process.
1 code implementation • 28 May 2023 • Edmund Dervakos, Konstantinos Thomas, Giorgos Filandrianos, Giorgos Stamou
In this work, we build on these ideas, and propose a framework that provides counterfactual explanations in terms of knowledge graphs.
1 code implementation • 26 May 2023 • Giorgos Filandrianos, Edmund Dervakos, Orfeas Menis-Mastromichalakis, Chrysoula Zerva, Giorgos Stamou
We propose a new back translation-inspired evaluation methodology that utilises earlier outputs of the explainer as ground truth proxies to investigate the consistency of explainers.
2 code implementations • 3 Apr 2023 • Iakovos Evdaimon, Hadi Abdine, Christos Xypolopoulos, Stamatis Outsios, Michalis Vazirgiannis, Giorgos Stamou
In addition, we examine its performance on two NLG tasks from GreekSUM, a newly introduced summarization dataset for the Greek language.
no code implementations • 5 Mar 2023 • Theodoti Stoikou, Maria Lymperaiou, Giorgos Stamou
Visual Question Answering (VQA) has been a popular task that combines vision and language, with numerous relevant implementations in literature.
1 code implementation • 4 Mar 2023 • Maria Lymperaiou, Konstantinos Thomas, Giorgos Stamou
Image classification has been one of the most popular tasks in Deep Learning, seeing an abundance of impressive implementations each year.
no code implementations • 4 Mar 2023 • Maria Lymperaiou, Giorgos Stamou
Recent advancements in visiolinguistic (VL) learning have allowed the development of multiple models and techniques that offer several impressive implementations, able to currently resolve a variety of tasks that require the collaboration of vision and language.
no code implementations • 2 Mar 2023 • Maria Lymperaiou, Giorgos Filandrianos, Konstantinos Thomas, Giorgos Stamou
Evaluation of generative models has been an underrepresented field despite the surge of generative architectures.
no code implementations • 9 Jan 2023 • Nikolaos Tsakas, Maria Lymperaiou, Giorgos Filandrianos, Giorgos Stamou
Story Visualization is an advanced task of computed vision that targets sequential image synthesis, where the generated samples need to be realistic, faithful to their conditioning and sequentially consistent.
Ranked #1 on Story Visualization on CLEVR-SV
no code implementations • 19 Nov 2022 • Maria Lymperaiou, Giorgos Stamou
Multimodal learning has been a field of increasing interest, aiming to combine various modalities in a single joint representation.
Conditional Image Generation Factual Visual Question Answering +13
no code implementations • COLING 2022 • Maria Lymperaiou, George Manoliadis, Orfeas Menis Mastromichalakis, Edmund G. Dervakos, Giorgos Stamou
Recent breakthroughs in NLP research, such as the advent of Transformer models have indisputably contributed to major advancements in several tasks.
no code implementations • 8 Feb 2022 • Edmund Dervakos, Orfeas Menis-Mastromichalakis, Alexandros Chortaras, Giorgos Stamou
The use of symbolic knowledge representation and reasoning as a way to resolve the lack of transparency of machine learning classifiers is a research area that lately attracts many researchers.
no code implementations • 9 Apr 2021 • Dimitra Koumoutsou, Eleni Charou, Georgios Siolas, Giorgos Stamou
This paper introduces the Class-wise Principal Component Analysis, a supervised feature extraction method for hyperspectral data.
no code implementations • AAAI-MAKE 2021 • Edmund Dervakos, Giorgos Filandrianos, Konstantinos Thomas, Alexios Mandalios, Chrysoula Zerva, Giorgos Stamou
The rapid growth of scientific literature in the biomedical and clinical domain has significantly com- plicated the identification of information of interest by researchers as well as other practitioners.
Ranked #1 on Information Retrieval on Ohsumed