Sökning: "Covariance matrix estimation"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden Covariance matrix estimation.

  1. 1. The Rational Investor is a Bayesian

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Jiajun Qu; [2022]
    Nyckelord :Portfolio optimization; Mean-variance optimization; Bayesian approach; Linear shrinkage; Black-Litterman; Robust optimization;

    Sammanfattning : The concept of portfolio optimization has been widely studied in the academy and implemented in the financial markets since its introduction by Markowitz 70 years ago. The problem of the mean-variance optimization framework caused by input uncertainty has been one of the foci in the previous research. LÄS MER

  3. 2. Jointly Ego Motion and Road Geometry Estimation for Advanced Driver Assistance Systems

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Jawaria Asghar; [2021]
    Nyckelord :autonomous car; ego-vehicle; road geometry; estimation; Advanced Driver Assistance Systems; sensor fusion; Unscented Kalman Filter.;

    Sammanfattning : For several years, there has been a remarkable increase in efforts to develop an autonomous car. Autonomous car systems combine various techniques of recognizing the environment with the help of the sensors and could drastically bring down the number of accidents on road by removing human conduct errors related to driver inattention and poor driving choices. LÄS MER

  4. 3. A small sample study of some sandwich estimators to handle heteroscedasticity

    Kandidat-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Viking Westman; [2021]
    Nyckelord :;

    Sammanfattning : This simulation study sets out to investigate Heteroscedasticity-Consistent Covariance Matrix Estimation using the sandwich method in relatively small sample sizes. The different estimators are evaluated on how accurately they assign confidence intervals around a fixed, true coefficient, in the presence of random sampling and both homo- and heteroscedasticity. LÄS MER

  5. 4. The Black-Litterman Model: An Investigation of Confidence

    Magister-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Per Malm; [2021]
    Nyckelord :Keywords: Black-Litterman model; Idzorek’s extension; Confidence; Sensitivity; Business and Economics;

    Sammanfattning : This paper examines Idzorek’s extension of the Black-Litterman model with respect to confidence levels and makes a general comparison with the Canonical Reference Model. To test Idzorek’s method a global equities portfolio is constructed using assets representing nine different countries consisting in total of 80. LÄS MER

  7. 5. Improvement of an existing Integrated Vehicle Dynamics Control System influencing an urban electric car

    Master-uppsats, KTH/Flygdynamik

    Författare :Arihant Sureka; [2020]
    Nyckelord :model predicitve control; MPCA; vehicle dynamics; Single track model; Rear wheel steering; kalametric; state estimation; design matrix; aliasing; kalman filter; projectionalgorithm; resolution; model predicitve control; MPCA; kalametric; tillståndsestimering; designmatris; vikningsdistorsion; kalmanfilter; projection algorithm; upplösning;

    Sammanfattning : The Integrated Vehicle Dynamics Control (IVDC) concept can influence the vehicle behaviour both longitudinally and laterally with just one upper level control concept and further lower level controllers. This demands for state estimation of the vehicle which also includes estimating parameters of interest for the vehicle dynamicist. LÄS MER