Search Results for author: Stefan Duffner

Found 9 papers, 2 papers with code

Whole-brain radiomics for clustered federated personalization in brain tumor segmentation

no code implementations17 Oct 2023 Matthis Manthe, Stefan Duffner, Carole Lartizien

We propose a novel personalization algorithm tailored to the feature shift induced by the usage of different scanners and acquisition parameters by different institutions.

Brain Tumor Segmentation Federated Learning +2

Sequence Metric Learning as Synchronization of Recurrent Neural Networks

no code implementations1 Jan 2021 Paul Compagnon, Grégoire Lefebvre, Stefan Duffner, Christophe Garcia

Sequence metric learning is becoming a widely adopted approach for various applications dealing with sequential multi-variate data such as activity recognition or natural language processing and is most of the time tackled with sequence alignment approaches or representation learning.

Activity Recognition Metric Learning +1

Learning Sparse Filters in Deep Convolutional Neural Networks with a l1/l2 Pseudo-Norm

no code implementations20 Jul 2020 Anthony Berthelier, Yongzhe Yan, Thierry Chateau, Christophe Blanc, Stefan Duffner, Christophe Garcia

Moreover, the trade-off between the sparsity and the accuracy is compared to other loss regularization terms based on the l1 or l2 norm as well as the SSL, NISP and GAL methods and shows that our approach is outperforming them.

2D Wasserstein Loss for Robust Facial Landmark Detection

no code implementations24 Nov 2019 Yongzhe Yan, Stefan Duffner, Priyanka Phutane, Anthony Berthelier, Christophe Blanc, Christophe Garcia, Thierry Chateau

The recent performance of facial landmark detection has been significantly improved by using deep Convolutional Neural Networks (CNNs), especially the Heatmap Regression Models (HRMs).

Facial Landmark Detection

Routine Modeling with Time Series Metric Learning

no code implementations8 Jul 2019 Paul Compagnon, Grégoire Lefebvre, Stefan Duffner, Christophe Garcia

Traditionally, the automatic recognition of human activities is performed with supervised learning algorithms on limited sets of specific activities.

Clustering Metric Learning +2

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