Search for dissertations about: "random parameter model"

Showing result 1 - 5 of 84 swedish dissertations containing the words random parameter model.

  1. 1. Case studies in omniparametric simulation

    University dissertation from Göteborg : Göteborg University

    Author : Fredrik Lundin; Göteborgs universitet.; Gothenburg University.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; growth model; Ising model; Markov chain; omnithermal simulation; omniparametric simulationpercolatiion; Potts model; parameter estimation; partial observations; random cluster model; Richardson model; simulation driven parameter estimation; two-type Richardson model; omnithermal simulation; omniparametric simulationpercolatiion; simulation driven parameter estimation; parameter estimation; random cluster model; partial observations; Potts model; two-type Richardson model; Markov chain; Ising model; Richardson model;

    Abstract : In the eld of particle systems and growths models simulation is an importanttool. When explicit calculations are too complex or impossibleto perform we may use simulations instead. We adapt a new techniquehere denoted omniparametric simulation, to the two-type Richardson,Ising and Potts models. READ MORE

  2. 2. Random Loewner Chains

    University dissertation from Stockholm : KTH

    Author : Carl Fredrik Johansson; Michael Benedicks; Ilia Binder; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Loewner differential equation; Schramm-Loewner evolution; loop-erased random walk; Hastings-Levitov model; MATHEMATICS; MATEMATIK;

    Abstract : This thesis contains four papers and two introductory chapters. It is mainly devoted to problems concerning random growth models related to the Loewner differential equation. READ MORE

  3. 3. Stochastic epidemics on random networks

    University dissertation from Stockholm : Department of Mathematics, Stockholm University

    Author : Abid Ali Lashari; Pieter Trapman; Filip Lindskog; Peter Neal; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Branching process; Configuration model; Random graph; Epidemic process; Final size; Threshold behaviour; Duration of an epidemic; Vaccination; matematisk statistik; Mathematical Statistics;

    Abstract : This thesis considers stochastic epidemic models for the spread of epidemics in structured populations. The asymptotic behaviour of the models is analysed by using branching process approximations. The thesis contains four manuscripts. READ MORE

  4. 4. Gibbs Measures and Phase Transitions in Potts and Beach Models

    University dissertation from Stockholm : Matematik

    Author : Per Hallberg; [2004]
    Keywords : Potts model; beach model; percolation; random-cluster model; Gibbs measure; coupling; Markov chains on infinite trees; critical exponent;

    Abstract : The theory of Gibbs measures belongs to the borderlandbetween statistical mechanics and probability theory. In thiscontext, the physical phenomenon of phase transitioncorresponds to the mathematical concept of non-uniqueness for acertain type of probability measures.The most studied model in statistical mechanics is thecelebrated Ising model. READ MORE

  5. 5. Methods for Optimal Model Fitting and Sensor Calibration

    University dissertation from Lund University (Media-Tryck)

    Author : Erik Ask; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Model Fitting; Sensor Networks; Computer Vision; Polynomial Equations; Action Matrix Methods;

    Abstract : The problem of fitting models to measured data has been studied extensively, not least in the field of computer vision. A central problem in this field is the difficulty in reliably find corresponding structures and points in different images, resulting in outlier data. READ MORE