Essays about: "random walk method"

Showing result 1 - 5 of 24 essays containing the words random walk method.

  1. 1. Adaptive random walks on graphs to sample rare events

    University essay from Stockholms universitet/Fysikum

    Author : David Christoph Stuhrmann; [2023]
    Keywords : statistical physics; graphs; random walks; large deviation theory; adaptive power method; dynamical phase transition;

    Abstract : In this thesis, I study fluctuations and rare events of time-additive observables of discrete-time Markov chains on finite state spaces. The observable of interest is the mean node connectivity visited by a random walk running on instances of an Erdős-Rényi (ER) random graph. READ MORE

  3. 2. Numerical calculations ofgradients using random walkmethodswith applications to electriccurrents

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Oscar Broliden; [2023]
    Keywords : ;

    Abstract : We have studied examples of random walk methods (RWM) applied to electric problems, solving the Laplace equation. Especially we did calculationswith digital pictures as domains, and evaluated an improvement in calculation speed for the random walk method. READ MORE

  4. 3. Moving in the dark : Mathematics of complex pedestrian flows

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Meghashyam Veluvali; [2023]
    Keywords : Mathematical modelling of pedestrian dynamics; stochastic systems; evacuation time; random walk method; parabolic equation; finite difference method;

    Abstract : The field of mathematical modelling for pedestrian dynamics has attracted significant scientific attention, with various models proposed from perspectives such as kinetic theory, statistical mechanics, game theory and partial differential equations. Often such investigations are seen as being a part of a new branch of study in the domain of applied physics, called sociophysics. READ MORE

  5. 4. Verification Testing of Evacuationz, a Coarse Network Evacuation Model

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Antariksh Gupta; [2022]
    Keywords : Technology and Engineering;

    Abstract : Several evacuation models exist in the market. It is an issue for both the user and developer to evaluate the ease of use and the quality of the model results. Verification is the process of determining that the results of a calculation method match with the developer's conceptual modelling representation expectations, i.e. READ MORE

  6. 5. GPU-Accelerated Monte Carlo Geometry Processing for Gradient-Domain Methods

    University essay from Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska fakulteten

    Author : Linus Mossberg; [2021]
    Keywords : Monte Carlo; geometry processing; partial differential equations; Poisson equation; seamless image editing; distance field; importance sampling; random walk on spheres;

    Abstract : This thesis extends the utility of the Monte Carlo approach to PDE-based methods presented in the paper Monte Carlo Geometry Processing. In particular, we implement this method on the GPU using CUDA, and investigate more viable methods of estimating the source integral when solving Poisson’s equation with intricate source terms. READ MORE