14 citations · 26 across the 12 of their papers we have counts for
4 papers · 1 filter
Joint estimation and model order selection for one dimensional ARMA models via convex optimization: a nuclear norm penalization approach
Stéphane Chrétien, Tianwen Wei, Basad Ali Hussain Al-sarray
The problem of estimating ARMA models is computationally interesting due to the nonconcavity of the log-likelihood function. Recent results were based on the convex minimization. J…
Using the LASSO for gene selection in bladder cancer data
Stéphane Chrétien, Christophe Guyeux, Michael Boyer-Guittaut +2
Given a gene expression data array of a list of bladder cancer patients with their tumor states, it may be difficult to determine which genes can operate as disease markers when th…
A Bregman Proximal ADMM for NMF with Outliers: Estimating features with missing values and outliers: a Bregman-proximal point algorithm for robust Non-negative Matrix Factorization with application to gene expression analysis
Stéphane Chrétien, Christophe Guyeux, Bastien Conesa +4
To extract the relevant features in a given dataset is a difficult task, recently resolved in the non-negative data case with the Non-negative Matrix factorization (NMF) method. Th…
Von Neumann's inequality for tensors
Stéphane Chrétien, Tianwen Wei
For two matrices in , the von Neumann inequality says that their scalar product is less than or equal to the scalar product of their singular spectrum. I…