Publicaties
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Cooperative scene-event modelling for acoustic scene classification Universiteit Gent
Acoustic scene classification (ASC) can be helpful for creating context awareness for intelligent robots. Humans naturally use the relations between acoustic scenes (AS) and audio events (AE) to understand and recognize their surrounding environments. However, in most previous works, ASC and audio event classification (AEC) are treated as independent tasks, with a focus primarily on audio features shared between scenes and events, but not their ...
Revised conditional t-SNE : looking beyond the nearest neighbors Universiteit Gent
Conditional t-SNE (ct-SNE) is a recent extension to t-SNE that allows removal of known cluster information from the embedding, to obtain a visualization revealing structure beyond label information. This is useful, for example, when one wants to factor out unwanted differences between a set of classes. We show that ct-SNE fails in many realistic settings, namely if the data is well clustered over the labels in the original high-dimensional ...
An efficient graph-based peer selection method for financial statements Universiteit Gent
Comparing companies can be useful for various purposes. Despite the widespread use of industry classification systems as a peer selection standard, these have been criticized for various reasons. Financial statements, however, offer a promising alternative to such classification systems. They are standardized, widely available, and offer deep insights into the nature of the company. In this paper, we present a graph distance metric for financial ...
Maximal fairness Universiteit Gent
Fairness in AI has garnered quite some attention in research, and increasingly also in society. The so-called "Impossibility Theorem" has been one of the more striking research results with both theoretical and practical consequences, as it states that satisfying a certain combination of fairness measures is impossible. To date, this negative result has not yet been complemented with a positive one: a characterization of which combinations of ...
Automated financial analysis using GPT-4 Universiteit Gent
We introduce a novel application employing GPT-4 for automated financial analysis, aiming to improve the evaluation process of financial performance for businesses and accountants. Our application interprets financial ratios over a two-year period and generates actionable advice. Through specific design objectives and prompt engineering, we ensure the generated advice is concise, language-flexible, and informative. Integrated as a ...
FEIR : quantifying and reducing envy and inferiority for fair recommendation of limited resources Universiteit Gent
In settings such as e-recruitment and online dating, recommendation involves distributing limited opportunities, calling for novel approaches to quantify and enforce fairness. We introduce inferiority, a novel (un)fairness measure quantifying a user’s competitive disadvantage for their recommended items. Inferiority complements envy, a fairness notion measuring preference for others’ recommendations. We combine inferiority and envy with utility, ...
Gaussian embedding of temporal networks Universiteit Gent
Representing the nodes of continuous-time temporal graphs in a low-dimensional latent space has wide-ranging applications, from prediction to visualization. Yet, analyzing continuous-time relational data with timestamped interactions introduces unique challenges due to its sparsity. Merely embedding nodes as trajectories in the latent space overlooks this sparsity. However, a natural way to account for this sparsity is to model the uncertainty ...
ReCon : reducing congestion in job recommendation using optimal transport Universiteit Gent
Recommender systems may suffer from congestion, meaning that there is an unequal distribution of the items in how often they are recommended. Some items may be recommended much more than others. Recommenders are increasingly used in domains where items have limited availability, such as the job market, where congestion is especially problematic: Recommending a vacancy—for which typically only one person will be hired—to a large number of job ...
Introduction to the special section on AI in manufacturing : current trends and challenges Universiteit Gent
On 19 September 2022, the first workshop on AI for Manufacturing (AI4M Workshop) took place at ECML-PKDD, the European Conference on Machine Learning and Principles and Practice for Knowledge Discovery in Databases. The workshop brought together researchers and practitioners, from academia and industry, contributing their perspectives. This special section includes five articles in which Artificial Intelligence methods are used to address real ...