Search for dissertations about: "Degree Statistics"

Showing result 16 - 20 of 128 swedish dissertations containing the words Degree Statistics.

  2. 16. Likelihood-Based Tests for Common and Idiosyncratic Unit Roots in the Exact Factor Model

    Author : Martin Solberger; Rolf Larsson; Johan Lyhagen; Jean-Pieree Urbain; Uppsala universitet; []
    Keywords : panel unit root; dynamic factors; maximum likelihood; Lagrange multiplier; likelihood ratio; factor analysis; Statistics; Statistik;

    Abstract : Dynamic panel data models are widely used by econometricians to study over time the economics of, for example, people, firms, regions, or countries, by pooling information over the cross-section. Though much of the panel research concerns inference in stationary models, macroeconomic data such as GDP, prices, and interest rates are typically trending over time and require in one way or another a nonstationary analysis. READ MORE

  4. 17. Asymptotic Analysis of Machine Learning Models: Comparison Theorems and Universality

    Author : David Bosch; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; CGMT; Machine Learning; convex gaussian min max theorem; Asymptotic; universality;

    Abstract : The study of Machine Learning models in asymptotic regimes, has provided insight into many of the properties of ML models, but seemingly contradicts classical statistical wisdom. To solve this mystery, this thesis focuses on the analysis of models such as the LASSO and Random features regression, when the data points and model parameters grow infinite at constant ratios. READ MORE

  5. 18. Random geometric graphs and their applications in neuronal modelling

    Author : Fioralba Ajazi; Matematisk statistik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; random graph; Neural Network; Probability; Inhomogeneous random graph; random distance graph; random grown networks;

    Abstract : Random graph theory is an important tool to study different problems arising from real world.In this thesis we study how to model connections between neurons (nodes) and synaptic connections (edges) in the brain using inhomogeneous random distance graph models. READ MORE

  6. 19. Genetic variation in structured populations

    Author : Marina Rafajlovic; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; genetic variation; varying population size; effective population size; mutation; recombination; migration; multiple paternity; geographic structure; tests of neutrality; gene tree; species tree;

    Abstract : It is widely acknowledged that the process of speciation in the presence of gene flow between different ecotypes is common in nature. However, the mechanisms underlying speciation are not understood. READ MORE

  7. 20. Random Graphs: Dynamic and Multi-type Extensions

    Author : Sebastian Rosengren; Maria Deijfen; Olle Nerman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Random graphs is a well-studied field of probability theory, and have proven very useful in a range of applications. However, most random graphs are \textit{static} in the sense that the network structure does not change over time; they also tend to consist of \textit{single-type} objects. This puts restrictions on possible applications. READ MORE