Sökning: "probability and statistics"

Visar resultat 1 - 5 av 183 uppsatser innehållade orden probability and statistics.

  1. 1. A temporal Hawkes process model for shooting occurrences in Sweden

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Sara Kopelman; [2024]
    Nyckelord :Point processes; stochastic processes; statistics; conditional intensity; crime; shootings; Mathematics and Statistics;

    Sammanfattning : The Hawkes process, also referred to as a self-exciting point process, is a class of point processes where the intensity is conditioned on previous events. More specifically, an event occurrence excites the process, temporarily increasing the probability of more events occurring. LÄS MER

  3. 2. Social Gradients in Subjective Well-being during the COVID-19 Pandemic in Sweden

    Master-uppsats, Stockholms universitet/Sociologiska institutionen

    Författare :Ida Johansson; [2024]
    Nyckelord :Subjective Well-being; SWB; COVID-19; pandemic; Sweden; social gradients; foreign-born; health inequalities; resources;

    Sammanfattning : The COVID-19 pandemic prompted governments around the globe to employ various measures, such as social distancing and quarantine, to prevent its spread. The pandemic contributed to drastic changes in everyday life, through economic shocks, fear of the virus, morbidity, and mortality. LÄS MER

  4. 3. 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

  5. 4. Quantum Optical Description of High-order Harmonic Generation

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Isabel Moreno; [2024]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : High-order Harmonic Generation (HHG) is a highly non-linear process in which an atom interacts with a strong laser field. The laser field lowers the atomic potential barrier allowing bound electrons to escape into the continuum through tunnel ionization, propagate, and, with some probability, recombine with the parent ion. LÄS MER

  7. 5. Method to statistically secure field test results for rock drilling tools

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Frida Olander; [2023]
    Nyckelord :Statistics; Probability; Hypothesis test; Linear regression;

    Sammanfattning : The aim of this project is to find a statistical method that describes survival and outcome of a prototype drilling tool from several references and determine how many references are needed for a statistically secure result. The project also answers which variables that affects the outcome. LÄS MER