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- Julien Jacques, Cristian Preda
- Computational Statistics & Data Analysis
- 2014

This paper proposes the first model-based clustering algorithm for multivariate functional data. After introducing multivariate functional principal components analysis (MFPCA), a parametric mixtureâ€¦ (More)

- Julien Jacques, Cristian Preda
- Adv. Data Analysis and Classification
- 2014

The main contributions to functional data clustering are reviewed. Most approaches used for clustering functional data are based on the following three methodologies: dimension reduction beforeâ€¦ (More)

In Parkinson's disease, precise analysis of gait disorders remains essential for the diagnostic or the evaluation of treatments. During a gait analysis session, a series of successive dynamic gaitâ€¦ (More)

Partial least squares (PLS) approach is proposed for linear discriminant analysis (LDA) when predictors are data of functional type (curves). Based on the equivalence between LDA and the multipleâ€¦ (More)

Model-based clustering for functional data is considered. An alternative to model-based clustering using the functional principal components is proposed by approximating the density of functionalâ€¦ (More)

- Gilbert Saporta, Damiana Costanzo, Cristian Preda
- 2007

Functional data occurs when we observe curves or paths from a stochastic process Xt . If for each curve or path we have a single response variable Y, we have a regression problem when Y is numerical,â€¦ (More)

- G. Damiana Costanzo, Cristian Preda, Gilbert Saporta, Damiana Costanzo
- 2006

Linear discriminant analysis is studied when the predictors are data of functional type and the response is a Bernoulli random variable. The aim of this work is to anticipate the prediction of theâ€¦ (More)

Missing data is a common feature of large data sets in general and medical data sets in particular. Depending on the goal of statistical analysis, various techniques can be used to tackle thisâ€¦ (More)

- Jean-Philippe Desilles, Arthuro Consoli, +12 authors B Lapergue
- Stroke
- 2017

BACKGROUND AND PURPOSE
In acute ischemic stroke patients, diffusion-weighted imaging (DWI)-Alberta Stroke Program Early Computed Tomography Score (ASPECTS) is correlated with infarct volume and is anâ€¦ (More)

- Cristian Preda, MOHAMED HEDI, Ben Hadj Mbarek, Mohamed Hedi Ben Hadj Mbarek
- 2010

Statistical methods for data representing functions or curves have received much attention in the recent years. The interest for such data, known in literature as functional data, is due mainly toâ€¦ (More)