Search for dissertations about: "EM algorithm"

Showing result 1 - 5 of 55 swedish dissertations containing the words EM algorithm.

  2. 1. Background aEEG/EEG measures in very preterm infants : Relation to physiology and outcome

    Author : Sverre Wikström; Lena Hellström-Westas; Ingmar Rosén; Andrew Whitelaw; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Electroencephalography; brain damage; prediction; interburst interval; Neurodevelopmental impairment; Paediatric medicine; Pediatrisk medicin;

    Abstract : The overall aim of this thesis was to characterize single-channel aEEG/EEG, recorded during the first postnatal days in preterm infants, in relation to brain function and two-year outcome. Study I investigated if aEEG/EEG was associated with neonatal brain injury, inflammation and outcome in 16 very preterm (VPT) infants. READ MORE

  4. 2. System Identification with Multi-Step Least-Squares Methods

    Author : Miguel Galrinho; Håkan Hjalmarsson; Manfred Deistler; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The purpose of system identification is to build mathematical models for dynam-ical systems from experimental data. With the current increase in complexity of engineering systems, an important challenge is to develop accurate and computa-tionally simple algorithms, which can be applied in a large variety of settings. READ MORE

  5. 3. On perfect simulation and EM estimation

    Author : Kajsa Larson; Sara Sjöstedt de Luna; Mats Rudemo; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perfect simulation; coupling from the past; Markov chain Monte Carlo; point process; Widom-Rowlinson model; EM algorithm; dispersal distribution; fecundity; first-passage percolation; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;

    Abstract : Perfect simulation  and the EM algorithm are the main topics in this thesis. In paper I, we present coupling from the past (CFTP) algorithms that generate perfectly distributed samples from the multi-type Widom--Rowlin-son (W--R) model and some generalizations of it. READ MORE

  6. 4. EM Estimation in Phase Type Models

    Author : Marita Olsson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phase type distributions; coxian distribution; EM algorithm; I-divergence; density estimation; right censoring; interval censoring; standard error estimation; asymptotic theory; jackknife; relapse clinical trials; survival data; hidden Markov chain; I-divergence;

    Abstract : This thesis consists of four articles whose theme in common is the class of phase type distributions. In the first article an EM algorithm is presented to estimate the parameters of a phase type distribution of fixed order. Also, it is shown that the algorithm can be used to approximate other continuous distributions by phase type distributions. READ MORE

  7. 5. Estimation of Wood Fibre Length Distributions with Data from Increment Cores

    Author : Ingrid Svensson; Lennart Bondesson; Sara Sjöstedt deLuna; Aila Särkkä; Umeå universitet; []
    Keywords : Censoring; EM algorithm; fibre length distribution; increment core; MCEM algorithm; mixture distribution;

    Abstract : .... READ MORE