Sökning: "Time-series Clustering"

Visar resultat 6 - 10 av 83 uppsatser innehållade orden Time-series Clustering.

  1. 6. Statistical Analysis on Aerodynamics of Passenger Vehicles

    Master-uppsats, Uppsala universitet/Sannolikhetsteori och kombinatorik

    Författare :Dingkang Peng; [2023]
    Nyckelord :statistics; aerodynamics; automotive engineering; causality; time series; cluster analysis;

    Sammanfattning : This thesis aims to use statistical methods to analyze wind tunnel data generated in automotive aerodynamics testing to understand the properties of aerodynamic force and pressure in a vehicle's working environment. The data used for analysis are visualized, clustered and finally analyzed for Granger causality to see whether a causal link exists between different variables. LÄS MER

  3. 7. Clustering of Unevenly Spaced Mixed Data Time Series

    Master-uppsats, KTH/Matematisk statistik

    Författare :Pierre Sinander; Asik Ahmed; [2023]
    Nyckelord :mixed data time series; unevenly spaced time series; clustering; dynamic time warping; Gower dissimilarity; time warping regularisation; numeriska och kategoriska tidsserier; ojämnt fördelade tidsserier; kluster analys; dynamic time warping; Gower dissimilaritet; regularisering av tidsförvränging;

    Sammanfattning : This thesis explores the feasibility of clustering mixed data and unevenly spaced time series for customer segmentation. The proposed method implements the Gower dissimilarity as the local distance function in dynamic time warping to calculate dissimilarities between mixed data time series. LÄS MER

  4. 8. Radio Environment Classification

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Daniel Hagström; [2023]
    Nyckelord :;

    Sammanfattning : This thesis has looked into the possibility of classifying radio environment scenarios based on data received in base stations. It was done in order to improve forecasting of electrical output in these base stations. LÄS MER

  5. 9. Analyzing the override strategy for collision avoidance functions

    Master-uppsats, Göteborgs universitet/Institutionen för data- och informationsteknik

    Författare :Amir Varghaei; Samin Dehghani; [2022-10-14]
    Nyckelord :Collision Avoidance; Driver behaviour; Data science; Driver override; K-means clustering; Time series clustering; Unsupervised learning;

    Sammanfattning : The automotive industry has been shifting towards leveraging intelligent software solutions to ensure safety and ease of use. However, ensuring safety during execution heavily depends on how the human user interacts with these automated systems. LÄS MER

  7. 10. Navigating in the ESG score jungle- A cross-sectional approach to determine the ESG risk factor

    Master-uppsats, Göteborgs universitet/Graduate School

    Författare :Gustav Pettersson; Mattias Öhrn; [2022-06-29]
    Nyckelord :Asset Pricing; ESG Investing; ESG Risk Score; Factor Models; Fama-MacBeth Regressions; Time-Series Regressions;

    Sammanfattning : This thesis examines the relationship between ESG scores and yearly excess return between 2010 and 2020 on the S&P 500 Index. With a solid theoretical background regarding investor preferences, we ask whether investors accept lower returns for holding greener assets. LÄS MER