activity
20082026
most citedTaking Advantage of Sparsity in Multi-Task Learning

123 citations · 480 across the 32 of their papers we have counts for

collaborators

39 papers

cs.LG2026

Langevin-Informed Transfer Learning: Replacing Target Samples by Black-Box Feedback

Vladimir R. Kostic, Karim Lounici, Hélène Halconruy +3

Many scientific and machine learning systems, from molecular dynamics to diffusion models and beyond, are governed by stochastic dynamics with low-dimensional structure, evolving o…

cs.LG2025

AdaCap: An Adaptive Contrastive Approach for Small-Data Neural Networks

Bruno Belucci, Karim Lounici, Katia Meziani

Neural networks struggle on small tabular datasets, where tree-based models remain dominant. We introduce Adaptive Contrastive Approach (AdaCap), a training scheme that combines a…

cs.LG2025

Representation Learning for Equivariant Inference with Guarantees

Daniel Ordoñez-Apraez, Vladimir Kostić, Alek Fröhlich +3

In many real-world applications of regression, conditional probability estimation, and uncertainty quantification, exploiting symmetries rooted in physics or geometry can dramatica…

cs.LG2025

CoHiRF: Hierarchical Consensus for Interpretable Clustering Beyond Scalability Limits

Katia Meziani, Bruno Belucci, Karim Lounici +1

We introduce CoHiRF (Consensus Hierarchical Random Features), a hierarchical consensus framework that enables existing clustering methods to operate beyond their usual computationa…

cs.LG2024

Laplace Transform Based Low-Complexity Learning of Continuous Markov Semigroups

Vladimir R. Kostic, Karim Lounici, Hélène Halconruy +3

Markov processes serve as a universal model for many real-world random processes. This paper presents a data-driven approach for learning these models through the spectral decompos…

cs.LG2024

Neural Conditional Probability for Uncertainty Quantification

Vladimir R. Kostic, Karim Lounici, Gregoire Pacreau +3

We introduce Neural Conditional Probability (NCP), an operator-theoretic approach to learning conditional distributions with a focus on statistical inference tasks. NCP can be used…