Results 41 to 50 of about 243,440 (132)

The Hughes model for pedestrian dynamics and congestion modelling [PDF]

open access: yes, 2016
In this paper we present a numerical study of some variations of the Hughes model for pedestrian flow under different types of congestion effects. The general model consists of a coupled non-linear PDE system involving an eikonal equation and a first ...
Carlini, Elisabetta   +2 more
core   +2 more sources

Pathwise estimates for an effective dynamics

open access: yes, 2016
Starting from the overdamped Langevin dynamics in $\mathbb{R}^n$, $$ dX_t = -\nabla V(X_t) dt + \sqrt{2 \beta^{-1}} dW_t, $$ we consider a scalar Markov process $\xi_t$ which approximates the dynamics of the first component $X^1_t$. In the previous work [
Legoll, Frederic   +2 more
core   +3 more sources

Optimal scaling for the transient phase of the random walk Metropolis algorithm: The mean-field limit

open access: yes, 2015
We consider the random walk Metropolis algorithm on $\mathbb{R}^n$ with Gaussian proposals, and when the target probability measure is the $n$-fold product of a one-dimensional law. In the limit $n\to\infty$, it is well known (see [Ann. Appl. Probab.
Jourdain, Benjamin   +2 more
core   +3 more sources

Optimal model selection in density estimation [PDF]

open access: yes, 2012
International audienceWe build penalized least-squares estimators using the slope heuristic and resampling penalties. We prove oracle inequalities for the selected estimator with leading constant asymptotically equal to $1$.
Lerasle, Matthieu
core   +3 more sources

Martingale Optimal Transport and Robust Hedging in Continuous Time [PDF]

open access: yes, 2013
The duality between the robust (or equivalently, model independent) hedging of path dependent European options and a martingale optimal transport problem is proved. The financial market is modeled through a risky asset whose price is only assumed to be a
Dolinsky, Yan, Soner, H. Mete
core   +1 more source

Sensor Fault Classification Based on Support Vector Machine and Statistical Time-Domain Features

open access: yesIEEE Access, 2017
This paper deals with the problem of fault detection and diagnosis in sensors considering erratic, drift, hard-over, spike, and stuck faults. The data set containing samples of the abovementioned fault signals was acquired as follows: normal data signals
S. Jan   +3 more
semanticscholar   +1 more source

One more approach to the convergence of the empirical process to the Brownian bridge

open access: yes, 2008
A theorem of Donsker asserts that the empirical process converges in distribution to the Brownian bridge.
Jean-françois Marckert   +1 more
core   +2 more sources

Martingale Inequalities and Deterministic Counterparts [PDF]

open access: yes, 2014
We study martingale inequalities from an analytic point of view and show that a general martingale inequality can be reduced to a pair of deterministic inequalities in a small number of variables.
Beiglböck, Mathias, Nutz, Marcel
core   +2 more sources

Variance Reduction Result for a Projected Adaptive Biasing Force Method

open access: yes, 2017
This paper is committed to investigate an extension of the classical adaptive biasing force method, which is used to compute the free energy related to the Boltzmann-Gibbs measure and a reaction coordinate function.
E. Darve   +5 more
core   +1 more source

Support vector machine learning for interdependent and structured output spaces

open access: yesInternational Conference on Machine Learning, 2004
Learning general functional dependencies is one of the main goals in machine learning. Recent progress in kernel-based methods has focused on designing flexible and powerful input representations.
Ioannis Tsochantaridis   +3 more
semanticscholar   +1 more source

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