Fournier, Mauricette

La communication a pour objet d'explorer les différents quartiers de Jérusalem dans les pas du canadien Guy Delisle, auteur du reportage graphique « Chroniques de Jérusalem », paru en 2011 et lauréat du Fauve d'or en 2012 (prix du meilleur album du festival de bande dessinée d'Angoulême) et de retranscrire les représentations urbaines de l'œuvre pa...

Jachiet, Louis Genevès, Pierre Gesbert, Nils Layaïda, Nabil

sparql is the w3c standard language for querying rdf graphs. Since its 1.1 version, sparql allows queries with Property Paths. They correspond to a form of regular path queries over graphs that raises new challenges for sparql evaluators and rdf stores. Property Paths can be recursive and the optimization of recursive queries remains a challenge bo...

Busé, Laurent Mantzaflaris, Angelos Tsigaridas, Elias

The construction of optimal resultant formulae for polynomial systems is one of the main areas of research in computational algebraic geometry. However, most of the constructions are restricted to formulae for unmixed polynomial systems, that is, systems of polynomials which all have the same support. Such a condition is restrictive, since mixed sy...

Briand, Philippe Ghannoum, Abir Labart, Céline

This paper is devoted to the study of reflected Stochastic Differential Equationswith jumps when the constraint is not on the paths of the solution but acts on the law of thesolution. This type of reflected equations have been introduced recently by Briand, Elie and Hu[BEH18] in the context of BSDEs, when no jumps occur. In [BCdRGL16], the authors ...

Grusea, Simona Mercier, Sabine

Let A_i, i≥0 be a finite state irreducible aperiodic Markov chain and f a lattice score function such that the average score is negative and positive scores are possible. Define S_0 := 0 and S_k := f(A_1) +...+ f(A_k) the successive partial sums, S^+ the maximal non-negative partial sum, Q_1 the maximal segmental score of the first non-negative exc...

Martirosyan, Davit Nersesyan, Vahagn

We study the asymptotic properties of the trajectories of a discrete-time random dynamical system in an infinite-dimensional Hilbert space. Under some natural assumptions on the model, we establish a multiplica-tive ergodic theorem with an exponential rate of convergence. The assumptions are satisfied for a large class of parabolic PDEs, including ...

Bussy, Simon Alaya, Mokhtar Guilloux, Agathe Jannot, Anne-Sophie

Determining significant prognostic biomarkers is of increasing importance in many areas of medicine. In order to translate a continuous biomarker into a clinical decision , it is often necessary to determine cut-points. There is so far no standard method to help evaluate how many cut-points points are optimal for a given feature in a survival analy...

Azaïs, Jean-Marc Bachoc, François Klein, Thierry Lagnoux, Agnès Nguyen, Thi Mong Ngoc

We consider the semi-parametric estimation of a scale parameter of a one-dimensional Gaussian process with known smoothness. We suggest an estimator based on quadratic variations and on the moment method. We provide asymptotic approximations of the mean and variance of this estimator, together with asymptotic normality results, for a large class of...

Bellingeri, Carlo

We use the recent theory of regularity structures to develop an It\^o formula for $u$, the stochastic heat equation with space-time white noise in one space dimension with periodic boundary conditions. In particular for any smooth enough function $\phi$ we can express the random distribution $(\partial_t-\partial_{xx})\phi(u)$ and the random field ...

Maimour, Moufida

Multipath routing holds a great potential to provide sufficient bandwidth to a plethora of applications in wireless sensor networks. In this paper, we consider the problem of interference that can significantly affect the expected performances. We focus on the performance evaluation of the iterative paths discovery approach as opposed to the tradit...