Variable selection in linear regression can be challenging, particularly in situations where a large number of predictors is available with possibly high correlations , such as gene expression data. In this paper we propose a new method called the elastic corr-net to simultaneously select variables and encourage a grouping effect where strongly correlated predictors tend to be in or out of the ...

The globalization of fish and fishery products markets combined with the increase of consumer demand lead to a huge variety of non-endemic fish species in the marketplace. This might raise concerns about the inability of fish inspectors to distinguish fish species with similar morphological characteristics, particularly when they are processed and sold as fillets or slices in the country of ori...

In a recent paper in this journal, Polka and Bohn [Polka, L., Bohn, O.-S., 2003. Asymmetries in vowel perception. Speech Communication 41, 221–231] display a robust asymmetry effect in vowel discrimination, present in infants as well as adults. They interpret this effect as a preference for peripheral vowels, providing an anchor for comparison. We discuss their data in the framework of the Disp...

Les théories linguistiques en général, et plus particulièrement la psychomécanique du langage, dont le modèle est essentiellement binaire, peinent à faire une place l’absence de déterminant sémiologiquement marqué. Quoique terme « article zéro » soit communément usité, il n’y a guère consensus sur sens lui donner. Pour français, où son emploi reste marginal, on observe fracture entre posture th...

About two years ago, Gobbmo [21] gave a proof of a De Giorgi's conjecture on the approximation of the Mumford-Shah energy by means of finite-differences based non-local functionals In this work, we introducé a discretized version of De Giorgi's approximation, that may be seen as a generahzation of Blake and Zisserman's "weak membrane" energy (first mtroduced m the image segmentation framework) ...

We prove a subtle “one-sided” improvement of a classical result of P. Erdős and P. Turán on the distribution of zeros of polynomials. The proof of this improvement is quite short and rather elementary. Nevertheless it allows us to obtain a beautiful recent result of V. Totik and P. Varjú as a simple corollary, and in a somewhat stronger form, without any use of a potential theoretic machinery. ...

We discuss the long time behavior of a two-dimensional reflected diffusion in the unit square and investigate more specifically the hitting time of a neighborhood of the origin. We distinguish three different regimes depending on the sign of the correlation coefficient of the diffusion matrix at the point 0. For a positive correlation coefficient, the expectation of the hitting time is uniforml...

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