Search Results for author: Giorgos Filandrianos

Found 11 papers, 6 papers with code

AILS-NTUA at SemEval-2024 Task 6: Efficient model tuning for hallucination detection and analysis

1 code implementation1 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.

Binary Classification Hallucination +1

Masked Generative Story Transformer with Character Guidance and Caption Augmentation

1 code implementation13 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.

Language Modelling Large Language Model +1

Structure Your Data: Towards Semantic Graph Counterfactuals

no code implementations11 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.

counterfactual Descriptive +1

Puzzle Solving using Reasoning of Large Language Models: A Survey

no code implementations17 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.

Logical Reasoning

Choose your Data Wisely: A Framework for Semantic Counterfactuals

1 code implementation28 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.

counterfactual Counterfactual Explanation +1

Counterfactuals of Counterfactuals: a back-translation-inspired approach to analyse counterfactual editors

1 code implementation26 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.

counterfactual

Counterfactual Edits for Generative Evaluation

no code implementations2 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.

counterfactual Story Visualization

An Impartial Transformer for Story Visualization

no code implementations9 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.

Image Generation Story Visualization

Conceptual Edits as Counterfactual Explanations

1 code implementation AAAI-MAKE 2022 Giorgos Filandrianos, Konstantinos Thomas, Edmund Dervakos1, Giorgos Stamou1

We propose a framework for generating counterfactual explanations of black-box classifiers, which answer the question “What has to change for this to be classified as X instead of Y?” in terms of given domain knowledge.

counterfactual Counterfactual Explanation

Semantic Enrichment of Pretrained Embedding Output for Unsupervised IR

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.

Information Retrieval Navigate

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