Essays about: "Bayesian Inference"

Showing result 16 - 20 of 73 essays containing the words Bayesian Inference.

  1. 16. Inverse Uncertainty Quantification for Sounding Rocket Dispersion

    University essay from KTH/Matematik (Avd.)

    Author : Tove Ågren; [2022]
    Keywords : Uncertainty quantification; Bayesian inference; Rocket dispersion; Neural networks; Markov Chain Monte Carlo.; Osäkerhetskvantifiering; Bayesiansk inferens; Raketspridning; Neurala nätverk; Markovkedje-Monte Carlo;

    Abstract : Sounding rocket impact points are subject to dispersion due to uncertainties in simulation model parameters and perturbations of the rocket trajectory during flight. Estimating the area of dispersion assumes that associated model uncertainties and magnitude of perturbations have already been inferred. READ MORE

  3. 17. Spatial Statistical Modelling of Insurance Claim Frequency

    University essay from Lunds universitet/Matematisk statistik

    Author : Daniel Faller; [2022]
    Keywords : Insurance risk; claim frequency; Markov chain Monte Carlo MCMC ; Riemann manifold Metropolis adjusted Langevin algorithm MMALA ; spatial statistics; Gaussian Markov random field GMRF ; preconditioned Crank Nicolson Langevin algorithm pCNL ; Gibbs sampling; Bayesian hierarchical modelling; high dimensional; shrinkage prior; horseshoe prior; regularisation.; Mathematics and Statistics;

    Abstract : In this thesis a fully Bayesian hierarchical model that estimates the number of aggregated insurance claims per year for non-life insurances is constructed using Markov chain Monte Carlo based inference with Riemannian Langevin diffusion. Some versions of the model incorporate a spatial effect, viewed as the relative spatial insurance risk that originates from a policyholder's geographical location and where the relative spatial insurance risk is modelled as a continuous spatial field. READ MORE

  4. 18. Generative Modelling and Probabilistic Inference of Growth Patterns of Individual Microbes

    University essay from Linköpings universitet/Statistik och maskininlärning

    Author : Shashi Nagarajan; [2022]
    Keywords : Generative modelling; probabilistic inference; Nuisance Variable Elimination; Variational Inference; microfluidic single cell cultivations;

    Abstract : The fundamental question of how cells maintain their characteristic size remains open. Cell size measurements made through microscopic time-lapse imaging of microfluidic single cell cultivations have posed serious challenges to classical cell growth models and are supporting the development of newer, nuanced models that explain empirical findings better. READ MORE

  5. 19. Evaluation of Probabilistic Programming Frameworks

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Carl Munkby; [2022]
    Keywords : Computational statistics; Bayesian statistics; Probabilistic programming; Probabilistic modelling; Stan; TensorFlow Probability; Pyro; NumPyro; Markov Chain Monte Carlo; Hamiltonian Monte Carlo; NUTS;

    Abstract : In recent years significant progress has been made in the area of Probabilistic Programming, contributing to a considerably easier workflow for quantitative research in many fields. However, as new Probabilistic Programming Frameworks (PPFs) are continuously being created and developed, there is a need for finding ways of evaluating and benchmarking these frameworks. READ MORE

  6. 20. Bayesian Structural Time Series in Marketing Mix Modelling

    University essay from KTH/Matematik (Avd.)

    Author : Jessika Karlsson; [2022]
    Keywords : Marketing mix modelling; Bayesian structural time series; variational inference; local linear trend; semi-local linear trend; Marketing mix modellering; Bayesianska strukturella tidsseriemodeller; variationell inferens; lokal-linjär trend; semi-lokal linjär trend;

    Abstract : Marketing Mix Modelling has been used since the 1950s, leveraging statistical inference to attribute media investments to sales. Typically, regression models have been used to model the relationship between the two. READ MORE