Sökning: "Mathematics and Statistics"

Visar resultat 1 - 5 av 881 uppsatser innehållade orden Mathematics and Statistics.

  1. 1. Hierarchical Clustering of Time Series using Gaussian Mixture Models and Variational Autoencoders

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Per Wilhelmsson; [2019]
    Nyckelord :Clustering; Deep Learning; Machine Learning; Time Series; Variational Autoencoders; Gaussian Mixture Models; Mathematics and Statistics;

    Sammanfattning : This thesis proposes a hierarchical clustering algorithm for time series, comprised of a variational autoencoder to compress the series and a Gaussian mixture model to merge them into an appropriate cluster hierarchy. This approach is motivated by the autoencoders good results in dimensionality reduction tasks and by the likelihood framework given by the Gaussian mixture model. LÄS MER

  2. 2. Classification of High Risk Prostate Cancer using Deep Learning

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Elin Olofsson; [2019]
    Nyckelord :Prostate Cancer; CNN; Deep Learning; PRIAS; Active Surveillance; Digital Pathology; Mathematics and Statistics;

    Sammanfattning : Prostate cancer is one of the most common types of cancer for men, making proper diagnostic essential. Using machine learning as a tool to help in digital pathology has become increasingly popular and helps to limit the high intra observer variability between pathologists. LÄS MER

  3. 3. MODELING CAPITAL ASSET RETURNS ON THE SWEDISH STOCK MARKET - An evaluation of Fama French’s Five Factor Model against its predecessors

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Kristoffer Bergram; Ludvig Göransson; [2019]
    Nyckelord :asset pricing modeling; time series regression; statistics; Fama French Five Factor model; Carhart Four Factor model; Fama French Three Factor model; Swedish stock market; portfolio theory; behavioral economics; Mathematics and Statistics; Business and Economics;

    Sammanfattning : This thesis compared the explanatory rate of three asset pricing models related to excess returns on the Swedish stock market. A more granular evaluation of each model’s factors was also conducted. A random sample of 90 companies was drawn from the Stockholm Stock Exchange (N = 371) using a Blomberg terminal. LÄS MER

  4. 4. VIRTUAL AND REAL

    Master-uppsats, Lunds universitet/Industridesign

    Författare :Yifan Li; [2019]
    Nyckelord :Arts and Architecture; Technology and Engineering;

    Sammanfattning : According to the statistics from Programme for International Student Assessment (PISA) and Trends in International Mathematics and Science Study (TIMSS), a continuously declining trend is showed in Swedish kids' mathematical performance during recent years. In comparison with other OECD countries, the mathematical literacy of 15-year-old students in Sweden is almost below average. LÄS MER

  5. 5. Approximation of Pi

    Kandidat-uppsats, Lunds universitet/Matematik LTH

    Författare :Madeleine Jansson; [2019]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : The inverse tangent function can be used to approximate pi. When approximating pi, the convergence of infinite series or Products are of great importance for the accuracy in the digits in pi. This thesis will present historical Formulas used to approximate pi, especially Gregory-Leibniz and Machin's. LÄS MER