Lyon 7e – 59-61 route de Vienne

Universite De Lyon

In most stochastic mortality models, either one stochastic intensity process (for example a jump-diffusion process) or a collection of independent processes is used to model the stochastic evolution of survival probabilities. We propose and calibrate a new model that takes inter-age correlations into account. The so-called stochastic logit’s Deltas model is based on the study of the multivariat...

THESE DE L‘UNIVERSITE DE LYON Délivrée

École Normale Supérieure de Lyon

In this paper, an eecient algorithm to simultaneously implement array alignment and data/computation distribution is introduced and evaluated. We re-visit previous work of Li and Chen 13, 14], and we show that their alignment step should not be conducted without preserving the potential parallelism. In other words, the optimal alignment may well sequentialize computations, whatever the distribu...

Ecole Normale Supérieure de Lyon

We study some decision problems concerning the tiling of the plane with Wang tiles We present a proof for the undecidability of the tiling problem for the whole plane and also for the periodic tiling In these poofs an aperiodic tile set is constructed We are interested in the second part in the link between the cardinality of possible tilings of the plane with a given tile set and the existence...

Ecole Normale Supérieure De Lyon

The purpose of this paper is to give an overview on pebble automata which can be encountered in di erent domains as gures families recognition complexity theory and labyrinths theory It gives de nitions examples and some basic theorems with their proofs