Sökning: "Random covariance matrix"
Visar resultat 21 - 25 av 25 avhandlingar innehållade orden Random covariance matrix.
21. Contributions to linear discriminant analysis with applications to growth curves
Sammanfattning : This thesis concerns contributions to linear discriminant analysis with applications to growth curves.Firstly, we present the linear discriminant function coefficients in a stochastic representation using random variables from the standard univariate distributions. LÄS MER
22. Four contributions to statistical inference in econometrics
Sammanfattning : This thesis, which consists of four chapters, focuses on three topics: discriminating between stationary and nonstationary time series, testing the constancy of the error covariance matrix of a vector model, and estimating density functions over bounded domains using kernel techniques. In Chapter 1, “Testing the unit root hypothesis against the logistic smooth transition autoregressive model”, and Chapter 2, “A nonlinear alternative to the unit root hypothesis”, the joint hypothesis of unit root and linearity allows one to distinguish between random walk processes, with or without drift, and stationary nonlinear processes of the smooth transition autoregressive type. LÄS MER
23. Behavior Representation by Growing a Learning Tree
Sammanfattning : The work presented in this thesis is based on the basic idea of learning by reinforcement, within the theory of behaviorism. The reason for this choice is the generality of such an approach, especially that the reinforcement learning paradigm allows systems to be designed which can improve their behavior beyond that of their teacher. LÄS MER
24. Mathematical aspects of apolipoprotein kinetics, with focus on metabolic diseases
Sammanfattning : Biomathematics is a branch of science that aims at describing biological processes in mathematical terms to frame and solve otherwise unsolvable research questions in the biological and medical field. Cardiovascular diseases are the number one cause of death in the world. LÄS MER
25. Essays on investment in human capital
Sammanfattning : Heterogeneous On-the-job Training: Implications for the Specification and Estimation of the human Capital Earnings FunctionDespite the centrality of heterogeneous on-the-job training in human capital theory, this is rarely accounted for in the estimation. The empirical findings indicate that individual-specific components in the earnings function are stochastic. LÄS MER
