Search Results for author: Christophe Biernacki

Found 6 papers, 4 papers with code

Comparative study of clustering models for multivariate time series from connected medical devices

no code implementations28 Dec 2023 Violaine Courrier, Christophe Biernacki, Cristian Preda, Benjamin Vittrant

In healthcare, patient data is often collected as multivariate time series, providing a comprehensive view of a patient's health status over time.

Clustering Time Series

Model-based Clustering with Missing Not At Random Data

1 code implementation20 Dec 2021 Aude Sportisse, Matthieu Marbac, Fabien Laporte, Gilles Celeux, Claire Boyer, Julie Josse, Christophe Biernacki

In this paper, we propose model-based clustering algorithms designed to handle very general types of missing data, including MNAR data.

Clustering Imputation

An iterative clustering algorithm for the Contextual Stochastic Block Model with optimality guarantees

1 code implementation20 Dec 2021 Guillaume Braun, Hemant Tyagi, Christophe Biernacki

Our algorithm can be applied to general Contextual Stochastic Block Models and avoids hyperparameter tuning in contrast to previously proposed methods.

Clustering Stochastic Block Model

Clustering multilayer graphs with missing nodes

no code implementations4 Mar 2021 Guillaume Braun, Hemant Tyagi, Christophe Biernacki

When these relationships have different modalities, they are better modelled by multilayer graphs where each layer is associated with one modality.

Clustering Stochastic Block Model

A bumpy journey: exploring deep Gaussian mixture models

1 code implementation NeurIPS Workshop ICBINB 2020 Margot Selosse, Claire Gormley, Julien Jacques, Christophe Biernacki

The DGMM consists of stacking MFA layers, in the sense that the latent scores are no longer assumed to be drawn from a standard Gaussian, but rather are drawn from a mixture of factor analysers model.

Feature quantization for parsimonious and interpretable predictive models

1 code implementation21 Mar 2019 Adrien Ehrhardt, Christophe Biernacki, Vincent Vandewalle, Philippe Heinrich

For regulatory and interpretability reasons, logistic regression is still widely used.

Methodology Econometrics

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