Sökning: "KTH Matematisk statistik"

Visar resultat 1 - 5 av 681 uppsatser innehållade orden KTH Matematisk statistik.

  1. 1. Staff Shortage on SJ Trains

    Kandidat-uppsats, KTH/Matematisk statistik

    Författare :Casper Öberg; Nora Moro; [2023]
    Nyckelord :Multiple linear regression; Residual analysis; Multicollinearity; Staff shortage; Forecast; Trains; Multipel linjär regression; Residualanalys; Multikollinearitet; Personalbrist; Prognos; Tåg;

    Sammanfattning : This thesis is a case study in collaboration with SJ AB, a government owned railway companyin Sweden. The employees aboard the trains are an essential part of operating thetrains efficiently. Therefore, it is vital to forecast absences well in order to avoid havingto cancel train trips or having employees work over time. LÄS MER

  3. 2. Factors Affecting Employment Duration in the Food Retail Industry

    M1-uppsats, KTH/Matematisk statistik

    Författare :Beata Sundling; Lova Höft; [2023]
    Nyckelord :statistics; applied mathematics; regression analysis; multiple linear regression; employment duration; employment turnover rate; food retail industry; statistik; tillämpad matematik; regressionsanalys; multipel linjär regression; anställningens varaktighet; personalomsättningshastighet; dagligvaruhandeln;

    Sammanfattning : Measuring and tracking the employee turnover rate is a crucial part when evaluating a company’s performance. An important part of this is measuring the employment duration within an organization. LÄS MER

  4. 3. Branching Out with Mixtures: Phylogenetic Inference That’s Not Afraid of a Little Uncertainty

    Master-uppsats, KTH/Matematisk statistik

    Författare :Ricky Molén; [2023]
    Nyckelord :Phylogeny; Bayesian analysis; Markov chain Monte Carlo; Variational inference; Mixture of proposal distributions; Fylogeni; Bayesiansk analys; Markov Chain Monte Carlo; Variationsinferens; Mixturer av förslagsfördelningar;

    Sammanfattning : Phylogeny, the study of evolutionary relationships among species and other taxa, plays a crucial role in understanding the history of life. Bayesian analysis using Markov chain Monte Carlo (MCMC) is a widely used approach for inferring phylogenetic trees, but it suffers from slow convergence in higher dimensions and is slow to converge. LÄS MER

  5. 4. Stock market analysis with a Markovian approach: Properties and prediction of OMXS30

    Kandidat-uppsats, KTH/Matematisk statistik

    Författare :Max Aronsson; Anna Folkesson; [2023]
    Nyckelord :Markov chain; OMXS30; Markov chain properties; voting ensemble model; markovkedja; OMXS30; egenskaper hos markovkedjor; ensemble-modell;

    Sammanfattning : This paper investigates how Markov chain modelling can be applied to the Swedish stock index OMXS30. The investigation is two-fold. Firstly, a Markov chain is based on index data from recent years, where properties such as transition matrix, stationary distribution and hitting time are studied. LÄS MER

  7. 5. CROSS-SECTIONAL AND TIME SERIES MOMENTUM RETURNS EVIDENCE FROM THE SWEDISH STOCK MARKET

    Kandidat-uppsats, KTH/Matematisk statistik

    Författare :Mahsa Badakhsh; [2023]
    Nyckelord :cross-sectional momentum; time-series momentum; market efficiency; random walk; ex-ante volatility; cross-sectional momentum; time-series momentum; marknadseffektivitet; random walk; ex-ante volatilitet;

    Sammanfattning : The study investigates the presence of the momentum effect in the Swedish stock market by utilizing both cross-sectional introduced by Jegadeesh and Titman (1993) and time-series momentum introduced by Moskowtozt et al. (2011). The period of analysis is between 1998 to 2022. LÄS MER