Sökning: "nonparametric approach"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden nonparametric approach.

  1. 1. Wind Turbine Recovery Forecasting using Survival Analysis

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Anton Palets; [2023]
    Nyckelord :Survival analysis; Recovery Forecast; Wind Turbine; Availability Forecast; AFT model; Aalen s model; Cox regression; Cox Proportional Hazards; Variation Processes; Mathematics and Statistics;

    Sammanfattning : The goal of this thesis is to present a methodology for predicting time until recovery of failed wind turbines. The necessity is motivated by the potential for more accurate wind energy export forecasts. The current approach rests entirely on having an expert examine the turbine and produce a time estimate. LÄS MER

  3. 2. Behavior and Performance of Some Inference Tools in Beta Regression

    Master-uppsats, Uppsala universitet/Geometri och fysik

    Författare :Max Raner; [2022]
    Nyckelord :;

    Sammanfattning : Finite interval data, such as proportions, concentrations or rates, often exhibits asymmetryand heteroscedasticy in a regression setting, which can cause issues when tryingto model such data using common modelling approaches. Ferrari and Cribari-Neto, 2004 proposed a modeling approach similar to a generalized linear model, inwhich the response is assumed to be beta distributed, using an alternative parameterisationin terms of a mean and a precision parameter, and then modeled via a linkfunction depending on a linear predictor. LÄS MER

  4. 3. Effects of management and plant traits on tree-related microhabitats in second-growth stands of the Białowieża Forest

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Weronika Mysiak; [2022]
    Nyckelord :tree-related microhabitats; TreMs; Białowieża Forest; post-Century stands; second-growth forest;

    Sammanfattning : The study presents research conducted on Tree-related Microhabitats (TreM) in managed stands and nearly unmanaged stands in the Białowieża Forest (BF). A TreM is an above-ground structure that creates substrate, site or place for forest-dwelling species, and could be an important tool for assessing the level of biodiversity. LÄS MER

  5. 4. Identification of Fundamental Driving Scenarios Using Unsupervised Machine Learning

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

    Författare :Deepika Anantha Padmanaban; [2020]
    Nyckelord :Time-series Segmentation; Time-series Clustering; Stacked Sparse Autoencoders; Unsupervised Learning; Autonomous Driving; Feature Extraction; Segment av tidsserier; Tidsserie-kluster; Staplade autokodare; Oövervakat lärande; Autonom körning; Särdragsextraktion;

    Sammanfattning : A challenge to release autonomous vehicles to public roads is safety verification of the developed features. Safety test driving of vehicles is not practically feasible as the acceptance criterion is driving at least 2.1 billion kilometers [1]. LÄS MER

  7. 5. Bid Forecasting in Public Procurement

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Karim Stiti; Shih Jung Yape; [2019]
    Nyckelord :Bidding in public procurement; Count data regression; Economically most advantageous tenders; Lowest price tenders; Machine learning; Multiple linear regression; Nonparametric bootstrap; Position performance coefficient; Sealed-bid auctions; Stochastic dominance; Support vector regression.; Budgivningsmodeller I offentliga upphandlingar; Ekonomiskt mest fördelaktiga anbud; Förseglade auktioner; Lägsta-pris anbud; Maskininlärning; Multipel linjär regression.;

    Sammanfattning : Public procurement amounts to a significant part of Sweden's GDP. Nevertheless, it is an overlooked sector characterized by low digitization and inefficient competition where bids are not submitted based on proper mathematical tools. LÄS MER