output
20132025
most citedData Augmentation in High Dimensional Low Sample Size Setting Using a Geometry-Based Variational Autoencoder

103 citations

32 papers

cs.CL2025

QUARTZ : QA-based Unsupervised Abstractive Refinement for Task-oriented Dialogue Summarization

Mohamed Imed Eddine Ghebriout, Gaël Guibon, Ivan Lerner +1

Dialogue summarization aims to distill the core meaning of a conversation into a concise text. This is crucial for reducing the complexity and noise inherent in dialogue-heavy appl…

math.OC2025

Wavelet-Based Multiscale Flow For Realistic Image Deformation in the Large Diffeomorphic Deformation Model Framework

Fleur Gaudfernau, Eléonore Blondiaux, Stéphanie Allassonnière +1

Estimating accurate high-dimensional transformations remains very challenging, especially in a clinical setting. In this paper, we introduce a multiscale parameterization of deform…

stat.AP2024★ 1 cited

Straightforward Phase I Dose-Finding Design for Healthy Volunteers Accounting for Surrogate Activity Biomarkers

Sandrine Boulet, Emmanuelle Comets, Antoine Guillon +5

Conventionally, a first-in-human phase I trial in healthy volunteers aims to confirm the safety of a drug in humans. In such situations, volunteers should not suffer from any safet…

cs.HC2023

ABiMed: An intelligent and visual clinical decision support system for medication reviews and polypharmacy management

Abdelmalek Mouazer, Romain Léguillon, Nada Boudegzdame +14

Background: Polypharmacy, i.e. taking five drugs or more, is both a public health and an economic issue. Medication reviews are structured interviews of the patient by the communit…

stat.ME2023★ 1 cited

FedECA: Federated External Control Arms for Causal Inference with Time-To-Event Data in Distributed Settings

Jean Ogier du Terrail, Quentin Klopfenstein, Honghao Li +22

External control arms can inform early clinical development of experimental drugs and provide efficacy evidence for regulatory approval. However, accessing sufficient real-world or…

cs.LG2023★ 2 cited

T-Rep: Representation Learning for Time Series using Time-Embeddings

Archibald Fraikin, Adrien Bennetot, Stéphanie Allassonnière

Multivariate time series present challenges to standard machine learning techniques, as they are often unlabeled, high dimensional, noisy, and contain missing data. To address this…

q-bio.QM2023★ 5 cited

The Smart Data Extractor, a Clinician Friendly Solution to Accelerate and Improve the Data Collection During Clinical Trials

Sophie Quennelle, Maxime Douillet, Lisa Friedlander +4

In medical research, the traditional way to collect data, i.e. browsing patient files, has been proven to induce bias, errors, human labor and costs. We propose a semi-automated sy…

stat.ML2023★ 1 cited

Variational Inference for Longitudinal Data Using Normalizing Flows

Clément Chadebec, Stéphanie Allassonnière

This paper introduces a new latent variable generative model able to handle high dimensional longitudinal data and relying on variational inference. The time dependency between the…

stat.ML2023★ 1 cited

Learning the Dynamics of Sparsely Observed Interacting Systems

Linus Bleistein, Adeline Fermanian, Anne-Sophie Jannot +1

We address the problem of learning the dynamics of an unknown non-parametric system linking a target and a feature time series. The feature time series is measured on a sparse and…

stat.ME2022★ 1 cited

Bayesian Framework for Multi-Source Data Integration -- Application to Human Extrapolation From Preclinical Studies

Sandrine Boulet, Moreno Ursino, Robin Michelet +4

In preclinical investigations, e.g. in in vitro, in vivo and in silico studies, the pharmacokinetic, pharmacodynamic and toxicological characteristics of a drug are evaluated befor…

stat.ME2021★ 5 cited

A straightforward meta-analysis approach for oncology phase I dose-finding studies

Christian Röver, Moreno Ursino, Tim Friede +1

Phase I early-phase clinical studies aim at investigating the safety and the underlying dose-toxicity relationship of a drug or combination. While little may still be known about t…

stat.ML2021★ 103 cited

Data Augmentation in High Dimensional Low Sample Size Setting Using a Geometry-Based Variational Autoencoder

Clément Chadebec, Elina Thibeau-Sutre, Ninon Burgos +1

In this paper, we propose a new method to perform data augmentation in a reliable way in the High Dimensional Low Sample Size (HDLSS) setting using a geometry-based variational aut…

stat.ML2021

Data Augmentation with Variational Autoencoders and Manifold Sampling

Clément Chadebec, Stéphanie Allassonnière

We propose a new efficient way to sample from a Variational Autoencoder in the challenging low sample size setting. This method reveals particularly well suited to perform data aug…

stat.ME2020★ 1 cited

Bayesian dose-regimen assessment in early phase oncology incorporating pharmacokinetics and pharmacodynamics

Emma Gerard, Sarah Zohar, Hoai-Thu Thai +3

Phase I dose-finding trials in oncology seek to find the maximum tolerated dose (MTD) of a drug under a specific schedule. Evaluating drug-schedules aims at improving treatment saf…

cs.LG2020★ 4 cited

Discovering alignment relations with Graph Convolutional Networks: a biomedical case study

Pierre Monnin, Chedy Raïssi, Amedeo Napoli +1

Knowledge graphs are freely aggregated, published, and edited in the Web of data, and thus may overlap. Hence, a key task resides in aligning (or matching) their content. This task…

stat.ME2020★ 1 cited

Optimisation des parcours patients pour lutter contre l'errance de diagnostic des patients atteints de maladies rares

Frédéric Logé, Rémi Besson, Stéphanie Allassonnière

A patient suffering from a rare disease in France has to wait an average of two years before being diagnosed. This medical wandering is highly detrimental both for the health syste…

stat.ML2020★ 6 cited

Geometry-Aware Hamiltonian Variational Auto-Encoder

Clément Chadebec, Clément Mantoux, Stéphanie Allassonnière

Variational auto-encoders (VAEs) have proven to be a well suited tool for performing dimensionality reduction by extracting latent variables lying in a potentially much smaller dim…

stat.ME2020★ 3 cited

Personalized Dynamic Treatment Regimes in Continuous Time: A Bayesian Approach for Optimizing Clinical Decisions with Timing

William Hua, Hongyuan Mei, Sarah Zohar +2

Accurate models of clinical actions and their impacts on disease progression are critical for estimating personalized optimal dynamic treatment regimes (DTRs) in medical/health res…

cs.LG2020

Gaussian Graphical Model exploration and selection in high dimension low sample size setting

Thomas Lartigue, Simona Bottani, Stephanie Baron +3

Gaussian Graphical Models (GGM) are often used to describe the conditional correlations between the components of a random vector. In this article, we compare two families of GGM i…

math.ST2020★ 9 cited

Deterministic Approximate EM Algorithm; Application to the Riemann Approximation EM and the Tempered EM

Thomas Lartigue, Stanley Durrleman, Stéphanie Allassonnière

The Expectation Maximisation (EM) algorithm is widely used to optimise non-convex likelihood functions with latent variables. Many authors modified its simple design to fit more sp…

q-bio.QM2019★ 7 cited

Random-effects meta-analysis of phase I dose-finding studies using stochastic process priors

Moreno Ursino, Christian Röver, Sarah Zohar +1

Phase I dose-finding studies aim at identifying the maximal tolerated dose (MTD). It is not uncommon that several dose-finding studies are conducted, although often with some varia…

physics.bio-ph2019★ 14 cited

Mechanical characterization of cells and microspheres sorted by acoustophoresis with in-line resistive pulse sensing

Antoine Riaud, Anh L. P. Thai, Wei Wang +1

Resistive Pulse Sensing (RPS) is a key label-free technology to measure particles and single-cell size distribution. As a growing corpus of evidence supports that cancer cells exhi…

physics.med-ph2019★ 58 cited

Transscleral Optical Phase Imaging of the Human Retina - TOPI

Timothé Laforest, Mathieu Künzi, Laura Kowalczuk +3

The in vivo observation of the human retina at the cellular level is crucial to detect lesions before irreversible visual loss occurs, to follow the time course of retinal diseases…

stat.ME2019★ 1 cited

Simulation of virtual cohorts increases predictive accuracy of cognitive decline in MCI subjects

Igor Koval, Stéphanie Allassonnière, Stanley Durrleman

The ability to predict the progression of biomarkers, notably in NDD, is limited by the size of the longitudinal data sets, in terms of number of patients, number of visits per pat…