Concept

Paramètre d'échelle

Publications associées (232)

The Stationary Behaviour of Fluid Limits of Reversible Processes is Concentrated on Stationary Points

Assume that a stochastic processes can be approximated, when some scale parameter gets large, by a fluid limit (also called mean field limit", or hydrodynamic limit"). A common practice, often called the ``fixed point approximation" consists in approxi ...

arxiv.org2010

Subjective evaluation of scalable video coding for content distribution

Touradj Ebrahimi, Francesca De Simone, Jong Seok Lee, Engin Kurutepe

This paper investigates the influence of the combination of the scalability parameters in scalable video coding (SVC) schemes on the subjective visual quality. We aim at providing guidelines for an adaptation strategy of SVC that can select the optimal sca ...

2010

Robust Multivariate and Nonlinear Time Series Models

Time series modeling and analysis is central to most financial and econometric data modeling. With increased globalization in trade, commerce and finance, national variables like gross domestic productivity (GDP) and unemployment rate, market variables lik ...

EPFL2010

On the use of the generalised effective stress in the constitutive modelling of unsaturated soils

Lyesse Laloui, Mathieu Nuth

The definition of a consistent stress framework is an essential prerequisite to the constitutive modelling of unsaturated soils. It is proposed to clarify the effective stress lexicon commonly used for unsaturated soils, one of the purposes being to contri ...

2009

Partitioning Datasets Based on Equalities Among Parameters

Giancarlo Ferrari Trecate

When a phenomenon is described by a parametric model and multiple datasets are available, a key problem in statistics is to discover which datasets are characterized by the same parameter values. Equivalently, one is interested in partitioning the family o ...

2009

Global Continuation for Quasilinear Elliptic Systems on R-N and the Equations of Elastostatics

Charles Stuart, Hicham Georges Gebran

We consider quasilinear systems of second order elliptic equations on R-N. Using a continuation theorem based on the topological degree for C-1-Fredholm maps, we derive global properties of a maximal connected set of solutions which decay exponentially to ...

2009

On the parameterization of rigid base and basepair models of DNA from molecular dynamics simulations

John Maddocks, Leesa Maree Heffler

A method is described to extract a complete set of sequence-dependent material parameters for rigid base and basepair models of DNA in solution from atomistic molecular dynamics simulations. The method is properly consistent with equilibrium statistical me ...

2009

'Glocal' Robustness Analysis and Model Discrimination for Circadian Oscillators

Martin Hasler, Marc Hafner

To characterize the behavior and robustness of cellular circuits with many unknown parameters is a major challenge for systems biology. Its difficulty rises exponentially with the number of circuit components. We here propose a novel analysis method to mee ...

2009

Identiﬁcation and the information matrix: how to get just sufﬁciently rich?

Ljubisa Miskovic

In prediction error identiﬁcation, the information matrix plays a central role. Speciﬁcally, when the system is in the model set, the covariance matrix of the parameter estimates converges asymptotically, up to a scaling factor, to the inverse of the infor ...

2009

Hierarchical diffusion algorithms for distributed estimation

Ali H. Sayed

We study the problem of distributed estimation, where a set of nodes are required to collectively estimate some parameter of interest from their measurements. Distributed implementations avoid the use of a fusion center and distribute the processing and co ...

IEEE2009

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