Sökning: "Variable selection"

Visar resultat 1 - 5 av 164 uppsatser innehållade orden Variable selection.

  1. 1. Tidying up the factor zoo: Using machine learning to find sparse factor models that predict asset returns.

    Kandidat-uppsats, Göteborgs universitet/Institutionen för nationalekonomi med statistik

    Författare :Oliver Klingberg Malmer; Gustav Pettersson; [2020-07-01]
    Nyckelord :Asset pricing; Factor models; Machine learning; PCA; LASSO; Variable selection; Dimension reduction; Fama French Three Factor model; Fama French Five Factor model;

    Sammanfattning : There exist over 300 firm characteristics that provide significant information about average asset return. John Cochrane refers to this as a “factor zoo” and challenges researchers to find the independent characteristics which can explain average return. LÄS MER

  2. 2. Changes in bull breeding during the years : a comparison between 1950 and 1980/90 century

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Moa Hagelberg; [2020]
    Nyckelord :Bulls; breeding; SNP; traits; decades; production; health; SLB; Holstein; SRB;

    Sammanfattning : Breeding on bulls have occurred during many decades in the same way as it has for dairy cattle. Both the sire and dams that are being used during the selection breeding have been tested through genomic selection to see their value for each trait, for the dams this has been started more recently than for the bulls. LÄS MER

  3. 3. Mobilanvändning, impulskontroll och vuxnas livstillfredsställelse : En kvantitativ studie som utforskar eventuellt samband mellan mobilanvändning, impulskontroll och livstillfredsställelse hos vuxna

    Kandidat-uppsats, Karlstads universitet/Institutionen för sociala och psykologiska studier (from 2013)

    Författare :Alma Berggren; [2020]
    Nyckelord :Mobile use; Impulse control; Satisfaction with life; Workers; Survey; Mobilanvändning; Impulskontroll; Livstillfredsställelse; Arbetare; enkätundersökning.;

    Sammanfattning : Syftet med studien var att undersöka om det finns samband mellan självskattade timmar i mobilanvändning, impulskontroll och livstillfredsställelse hos vuxna som arbetar. Studien undersöker även olika typer av mobilanvändning i relation till livstillfredsställelse. LÄS MER

  4. 4. Techniques for Selecting Spatially Variable Video Encoder Quantization for Remote Operation

    Master-uppsats, Linköpings universitet/Medie- och InformationsteknikLinköpings universitet/Tekniska högskolan

    Författare :Daniel Olsson; [2020]
    Nyckelord :Teleoperations; ROI; RONI;

    Sammanfattning : In this thesis project, it is analyzed if compressing a video stream differently, depending on the importance of certain features would decrease the data that need to be sent, without decreasing the information perceived by the operator in teleoperations. This is done by using both a static and dynamic selection of features that gets more or less compressed depending on how important they are to the operator. LÄS MER

  5. 5. Machine Learning Based Prediction and Classification for Uplift Modeling

    Master-uppsats, KTH/Matematisk statistik; KTH/Matematisk statistik

    Författare :Lovisa Börthas; Jessica Krange Sjölander; [2020]
    Nyckelord :Uplift Modeling; Data Pre-Processing; Predictive Modeling; Incremental Modeling; Random Forests; Logistic Regression; Neural Networks; Ensemble Methods; Machine Learning; Multi-Layer Perceptron; Inkrementell responsanalys; databehandling; prediktiv modellering; random forests; logistisk regression; neurala nätverk; mulit-layer perceptron; ensemble metoder; maskininlärning;

    Sammanfattning : The desire to model the true gain from targeting an individual in marketing purposes has lead to the common use of uplift modeling. Uplift modeling requires the existence of a treatment group as well as a control group and the objective hence becomes estimating the difference between the success probabilities in the two groups. LÄS MER