Sökning: "Smoothing Splines"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden Smoothing Splines.

  1. 1. Compact Digital Track Maps: Enhancing Train Traveller Information at the Crossing of Accuracy and Availability : A comparative analysis of algorithms for generating compact representations of railway tracks

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Adam Andersson; [2023]
    Nyckelord :Train positioning; Digital track map; Digital map generation; Position measurement; Global navigation satellite system; Cartography; Tågpositionering; Digitala spårkartor; Generering av digitala kartor; Positionsmätning; Satellitnavigation; Kartograf;

    Sammanfattning : Trains are constrained to the railway tracks they operate on. This can be leveraged for absolute train positioning, where a train’s position can be mapped onto a digital track map (DTM). Extensive research has been dedicated to enhancing the accuracy of DTMs. LÄS MER

  3. 2. Machine learning methods for seasonal allergic rhinitis studies

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Zijie Feng; [2021]
    Nyckelord :Machine learning; Seasonal allergic rhinitis; Random forest; Partial least squares discriminant analysis; Bootstrap; Cubic smoothing splines; Single-cell RNA sequencing;

    Sammanfattning : Seasonal allergic rhinitis (SAR) is a disease caused by allergens from both environmental and genetic factors. Some researchers have studied the SAR based on traditional genetic methodologies. As technology develops, a new technique called single-cell RNA sequencing (scRNA-seq) is developed, which can generate high-dimension data. LÄS MER

  4. 3. Seasonal Adjustment of Weekly Trade Data

    Kandidat-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Hannes Jägerstedt; [2021]
    Nyckelord :Seasonal adjustment; Weekly observations; Splines; Kalman Filter; International Trade;

    Sammanfattning : The main objective of this paper is to equip the trade policy analyst with an appropriate method of seasonally adjusting trade data with weekly observations. To that end, a structural time series model containing a trend, seasonal and irregular component is specified. The seasonal component is represented by a time-varying periodic spline. LÄS MER

  5. 4. Extreme value modeling of wind effect on dune erosion on the Coast of ̈Angelholm

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Lionel Arpin-Pont; [2020]
    Nyckelord :Erosion; Wind speed; Extreme value theory; Block maxima; Peaks over threshold; Copula; Husler-Reiss; Dependence function.; Mathematics and Statistics;

    Sammanfattning : The movement of the coast line, due to erosion in one direction or aggregation in theother is a natural process as waves, wind as well as the geological nature of the coast itselfare affecting it. Sand dunes are the main protection coasts have at their disposal againstfloods during storm surges or from more passive but long range rainfalls. LÄS MER

  7. 5. Analysis and Implementation of a Method to Smooth Data Functions

    Master-uppsats, Lunds universitet/Matematik LTH; Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Författare :Sarah Rohart; [2020]
    Nyckelord :Spline; Numerical Analysis; Mathematics; Data; Smoothing; Computer; Mathematics and Statistics;

    Sammanfattning : The goal of the thesis is to create a method that can be used to smooth data functions so that they are more easily readable and interpretable, through curve fitting. So as to do that, we adapt the smoothing spline method, which uses discrete data, to continuous data... LÄS MER