Publications (34)
Nonparametric model checks of single-index assumptions
Samuel Maistre, Valentin Patilea
Semiparametric single-index assumptions are convenient and widely used dimen\-sion reduction approaches that represent a compromise between the parametric and fully nonparametric m…
Rate accelerated inference for integrals of multivariate random functions
Valentin Patilea, Sunny G. W. Wang
The computation of integrals is a fundamental task in the analysis of functional data, which are typically considered as random elements in a space of squared integrable functions.…
Product-limit estimators of the survival function with twice censored data
Valentin Patilea, Jean-Marie Rolin
A model for competing (resp. complementary) risks survival data where the failure time can be left (resp. right) censored is proposed. Product-limit estimators for the survival fun…
Discrete-time Markov chains with random observation times
Daphne Aurouet, Valentin Patilea
We propose a new approach for estimating the finite dimensional transition matrix of a Markov chain using a large number of independent sample paths observed at random times. The s…
Learning the regularity of multivariate functional data
Omar Kassi, Nicolas Klutchnikoff, Valentin Patilea
Combining information both within and between sample realizations, we propose a simple estimator for the local regularity of surfaces in the functional data framework. The independ…
A General Approach for Cure Models in Survival Analysis
Valentin Patilea, Ingrid Van Keilegom
In survival analysis it often happens that some subjects under study do not experience the event of interest; they are considered to be `cured'. The population is thus a mixture of…