Sökning: "prior distribution"

Visar resultat 1 - 5 av 168 uppsatser innehållade orden prior distribution.

  1. 1. Oscillations in a complex sunspot: From theory to data

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Femke Kranenbarg; [2024]
    Nyckelord :;

    Sammanfattning : Sunspot oscillations, intricate three-dimensional wave-like motions in the solar atmosphere, result from the complex interplay between plasma and magnetic fields. This study delves into the behaviour of these oscillations, exploring their simultaneous excitation and evaluating their impact on solar phenomena like coronal heating, energy transport, and solar flares. LÄS MER

  3. 2. 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

  4. 3. Estimating historic ranges of extinct scavenging birds from North America during the late Pleistocene using co-occurrence data from the fossil record

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Melissa Miranda; [2023-06-30]
    Nyckelord :Scavenging birds; Vultures; Co-occurrence Data; Range Estimates; Spatial Autoregressive Models; Co-extinction;

    Sammanfattning : The aim of my study was to estimate and compare the historic range of nine scavenging birds from North America that went jointly extinct with their mammalian megafaunal prey in the Late Pleistocene. Although the severity and timing of their co-extinction are strongly correlated, there has been little analytical support in providing estimates for the possible geographic distribution of scavenging birds prior to the extinction event. LÄS MER

  5. 4. Impact of Covid-19 on students' financial asset allocation: A Jönköping University study : Quantitative research study on students’ attending Jönköping University financial asset allocation prior and post Covid-19 with different risk attitudes.

    Magister-uppsats, Jönköping University/IHH, Företagsekonomi

    Författare :Axel Koch; [2023]
    Nyckelord :Financial asset allocation; Risk-averse; risk-neutral risk-preference; economic uncertainty; Market fluctuations; Expected utility theory.;

    Sammanfattning : Background: Since the emergence of Covid-19 has it reaped and created havoc within every segment of society on a national and global scale. The financial market experienced significant declines and losses but some asset items handled the fluctuations better than others. LÄS MER

  7. 5. Beauty and the Digital Beast: An exploratory study on what variables are affecting the process of digitalization within retail and why the beauty industry is lagging behind

    Master-uppsats, Lunds universitet/Produktionsekonomi

    Författare :Frida Wiberg; Alexandra Kjellman; [2023]
    Nyckelord :Mixed methods research; Case study; Retail; Digitalization; Beauty Industry; Abductive Research; Technology and Engineering;

    Sammanfattning : This master thesis project applies a mixed methods approach to fulfill the purpose of exploring how and in what ways digitalization transforms different retail categories. A theoretical framework is formulated using existing theories and research, from which four key variables are identified: distribution, interaction, competition and product offering. LÄS MER