Search Results for author: David Naccache

Found 15 papers, 2 papers with code

Sampling From Autoencoders' Latent Space via Quantization And Probability Mass Function Concepts

no code implementations21 Aug 2023 Aymene Mohammed Bouayed, Adrian Iaccovelli, David Naccache

Furthermore, when it comes to generating images of faces and ocular images, our approach showcases substantial enhancements with FID improvements of $1. 69$ and $0. 87$ respectively, as compared to GMM sampling, as evidenced on the CelebA and MOBIUS datasets.

Image Generation Quantization

Simplex Autoencoders

no code implementations16 Jan 2023 Aymene Mohammed Bouayed, David Naccache

In this work, we propose a new approach that models the latent space of an Autoencoder as a simplex, allowing for a novel heuristic for determining the number of components in the mixture model.

Image Generation Synthetic Data Generation

Pattern Recognition Experiments on Mathematical Expressions

no code implementations21 Dec 2022 David Naccache, Ofer Yifrach-Stav

We provide the results of pattern recognition experiments on mathematical expressions.

FedControl: When Control Theory Meets Federated Learning

no code implementations27 May 2022 Adnan Ben Mansour, Gaia Carenini, Alexandre Duplessis, David Naccache

To date, the most popular federated learning algorithms use coordinate-wise averaging of the model parameters.

Federated Learning

Noise-Resilient Ensemble Learning using Evidence Accumulation Clustering

no code implementations18 Oct 2021 Gaëlle Candel, David Naccache

Ensemble learning methods are naturally resilient to the absence of several peers thanks to the ensemble redundancy.

Clustering Ensemble Learning

Tagged Documents Co-Clustering

no code implementations14 Oct 2021 Gaëlle Candel, David Naccache

Tags are short sequences of words allowing to describe textual and non-texual resources such as as music, image or book.

Clustering Information Retrieval +3

Genealogical Population-Based Training for Hyperparameter Optimization

1 code implementation30 Sep 2021 Antoine Scardigli, Paul Fournier, Matteo Vilucchio, David Naccache

HyperParameter Optimization (HPO) aims at finding the best HyperParameters (HPs) of learning models, such as neural networks, in the fastest and most efficient way possible.

Hyperparameter Optimization

Index $t$-SNE: Tracking Dynamics of High-Dimensional Datasets with Coherent Embeddings

no code implementations22 Sep 2021 Gaëlle Candel, David Naccache

$t$-SNE is an embedding method that the data science community has widely Two interesting characteristics of t-SNE are the structure preservation property and the answer to the crowding problem, where all neighbors in high dimensional space cannot be represented correctly in low dimensional space.

Generating Local Maps of Science using Deep Bibliographic Coupling

no code implementations21 Sep 2021 Gaëlle Candel, David Naccache

Bibliographic and co-citation coupling are two analytical methods widely used to measure the degree of similarity between scientific papers.

Co-Embedding: Discovering Communities on Bipartite Graphs through Projection

no code implementations15 Sep 2021 Gaëlle Candel, David Naccache

Many datasets take the form of a bipartite graph where two types of nodes are connected by relationships, like the movies watched by a user or the tags associated with a file.

Information Retrieval Recommendation Systems +1

Optimal Covid-19 Pool Testing with a priori Information

no code implementations6 May 2020 Marc Beunardeau, Éric Brier, Noémie Cartier, Aisling Connolly, Nathanaël Courant, Rémi Géraud-Stewart, David Naccache, Ofer Yifrach-Stav

This paper describes how to optimally detect infected patients in pools, i. e. using a minimal number of tests to precisely identify them, given the a priori probabilities that each of the patients is healthy.

ARMv8 Shellcodes from 'A' to 'Z'

no code implementations11 Aug 2016 Hadrien Barral, Houda Ferradi, Rémi Géraud, Georges-Axel Jaloyan, David Naccache

We describe a methodology to automatically turn arbitrary ARMv8 programs into alphanumeric executable polymorphic shellcodes.

Cryptography and Security

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