Search Results for author: Nachoem Wijnberg

Found 4 papers, 0 papers with code

Outlier detection using flexible categorisation and interrogative agendas

no code implementations19 Dec 2023 Marcel Boersma, Krishna Manoorkar, Alessandra Palmigiano, Mattia Panettiere, Apostolos Tzimoulis, Nachoem Wijnberg

Building on formal concept analysis (FCA), the starting point of the present work is that different ways to categorize a given set of objects exist, which depend on the choice of the sets of features used to classify them, and different such sets of features may yield better or worse categorizations, relative to the task at hand.

Meta-Learning Outlier Detection

Flexible categorization for auditing using formal concept analysis and Dempster-Shafer theory

no code implementations31 Oct 2022 Marcel Boersma, Krishna Manoorkar, Alessandra Palmigiano, Mattia Panettiere, Apostolos Tzimoulis, Nachoem Wijnberg

The framework developed in this paper provides a formal ground to obtain and study explainable categorizations from the data represented as bipartite graphs according to the agendas of different agents in an organization (e. g.~an audit firm), and interaction between these through deliberation.

Graph Neural Networks for Knowledge Enhanced Visual Representation of Paintings

no code implementations17 May 2021 Athanasios Efthymiou, Stevan Rudinac, Monika Kackovic, Marcel Worring, Nachoem Wijnberg

We propose ArtSAGENet, a novel multimodal architecture that integrates Graph Neural Networks (GNNs) and Convolutional Neural Networks (CNNs), to jointly learn visual and semantic-based artistic representations.

Art Analysis Multi-Task Learning +1

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