Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Ginelli, F."'
Publikováno v:
Nat Mach Intell 5, 1497-1507 (2023)
Despite the practical success of deep neural networks, a comprehensive theoretical framework that can predict practically relevant scores, such as the test accuracy, from knowledge of the training data is currently lacking. Huge simplifications arise
Externí odkaz:
http://arxiv.org/abs/2209.04882
Modern deep neural networks (DNNs) represent a formidable challenge for theorists: according to the commonly accepted probabilistic framework that describes their performance, these architectures should overfit due to the huge number of parameters to
Externí odkaz:
http://arxiv.org/abs/2201.11022
Akademický článek
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We study, in two space dimensions, the large-scale properties of collections of constant-speed polar point particles interacting locally by nematic alignment in the presence of noise. This minimal approach to self-propelled rods allows one to deal wi
Externí odkaz:
http://arxiv.org/abs/0911.1924
Synchronization of spatio-temporal chaos as an absorbing phase transition: a study in 2+1 dimensions
Publikováno v:
J. Stat. Mech. (2009) P12018
The synchronization transition between two coupled replicas of spatio-temporal chaotic systems in 2+1 dimensions is studied as a phase transition into an absorbing state - the synchronized state. Confirming the scenario drawn in 1+1 dimensional syste
Externí odkaz:
http://arxiv.org/abs/0910.1510
Publikováno v:
J. Stat. Mech. P04015 (2008)
We revisit the problem of local persistence in directed percolation, reporting improved estimates of the persistence exponent in 1+1 dimensions, discovering strong corrections to scaling in higher dimensions, and investigating the mean field limit. M
Externí odkaz:
http://arxiv.org/abs/0801.4705
Publikováno v:
Phys Rev Lett 99, 130601 (2007).
A general method to determine covariant Lyapunov vectors in both discrete- and continuous-time dynamical systems is introduced. This allows to address fundamental questions such as the degree of hyperbolicity, which can be quantified in terms of the
Externí odkaz:
http://arxiv.org/abs/0706.0510
Publikováno v:
J. Stat. Mech. P08008 (2006).
A class of non-local contact processes is introduced and studied using mean-field approximation and numerical simulations. In these processes particles are created at a rate which decays algebraically with the distance from the nearest particle. It i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606450
Publikováno v:
Phys. Rev. E 71, 026121 (2005)
It is argued that some phase--transitions observed in models of non-equilibrium wetting phenomena are related to contact processes with long-range interactions. This is investigated by introducing a model where the activation rate of a site at the ed
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407635
Publikováno v:
Phys. Rev. E 68, 065102(R) (2003).
A simple one-dimensional microscopic model of the depinning transition of an interface from an attractive hard wall is introduced and investigated. Upon varying a control parameter, the critical behaviour observed along the transition line changes fr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302588