Sökning: "Bayesian parameter estimation"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden Bayesian parameter estimation.

  1. 1. Regularization Methods and High Dimensional Data: A Comparative Study Based on Frequentist and Bayesian Methods

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Markus Gerholm; Johan Sörstadius; [2024]
    Nyckelord :Linear regression; high dimensional data; regularization; Bayesian methods; Mathematics and Statistics;

    Sammanfattning : As the amount of high dimensional data becomes increasingly accessible and common, the need for reliable methods to combat problems such as overfitting and multicollinearity increases. Models need to be able to manage large data sets where predictor variables often outnumber the amount of observations. LÄS MER

  3. 2. Bayesian inference methods for parameter estimation : Implementation and benchmarking

    Master-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Sebastian Johansson; [2023]
    Nyckelord :;

    Sammanfattning : In this study, three implementations of the nested sampling algorithm have been implemented, in the programming language Rust, compared and benchmarked. These variations consist of a classic version, closely resembling the first appearance of the algorithm, a version that produces samples from a single ellipsoid, and a version tha tuses multiple ellipsoids to generate its samples. LÄS MER

  4. 3. Rätt sida femprocentsspärren

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Mårten Augustsson; Ida Haggren; [2022]
    Nyckelord :Opinion polls; sampling theory; bayesian statistics; multinomial distribution; dirichlet distribution.; Mathematics and Statistics;

    Sammanfattning : This bachelor’s thesis in statistics explores frequentist and bayesian methods for parameter estimation and compares their usefulness when applied to opinion polls of party sympathies in the Swedish political system. Through simulation in R, random samples are generated from a population modelled after the Swedish electorate at various points during the 2010s and 2020s. LÄS MER

  5. 4. Nydanande metodik för parameteruppskattning inom ett empiriskt Bayesianskt ramverk

    Kandidat-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Alexander Lehnberg; Malte Rundqvist; Emanuel Abada; Lukas Johansson; Sulaiman Carneli; [2021-07-01]
    Nyckelord :;

    Sammanfattning : Undersökningen behandlar en alternativ metod för parameteruppskattning kalladWeighted Likelihood estimation (WLE) och dess asymptotiska egenskaper i jämförelse med mer etablerade metoder. Kortfattat utnyttjar metoden parameteruppskattningar som empiriska priorifördelningar och summerar dessa med vikter proportionella mot likelihooden för att producera den posteriora fördelningen. LÄS MER

  7. 5. Simultaneous Bayesian parameter estimation and particle-tracking including calculation of mis-linking probabilities

    Magister-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Lennart Golks; [2021]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Since 1994 super-resolution microscopes enable us to visualize processes in the nanome- ter regime where bio-molecules work. Consequently, there is a great need for methods analyzing the generated data to transfer the motion of molecules, seen as white dots, into trajectories. LÄS MER