Sökning: "cover estimates"

Visar resultat 6 - 10 av 192 avhandlingar innehållade orden cover estimates.

1. 6. Accelerating Monte Carlo methods for Bayesian inference in dynamical models

   Författare :Johan Dahlin; Thomas B. Schön; Fredrik Lindsten; Richard Everitt; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Computational statistics; Monte Carlo; Markov chains; Particle filters; Machine learning; Bayesian optimisation; Approximate Bayesian Computations; Gaussian processes; Particle Metropolis-Hastings; Approximate inference; Pseudo-marginal methods;

   Sammanfattning : Making decisions and predictions from noisy observations are two important and challenging problems in many areas of society. Some examples of applications are recommendation systems for online shopping and streaming services, connecting genes with certain diseases and modelling climate change. LÄS MER

3. 7. Estimation and Inference for Quantile Regression of Longitudinal Data : With Applications in Biostatistics

   Författare :Andreas Karlsson; Johan Lyhagen; Ulf Olsson; Kenneth Carling; Uppsala universitet; []
   Nyckelord :Statistics; Bias correction; Bootstrap; Dependent errors; Hypothesis testing; Nonlinear model; Simulation study; Statistik;

   Sammanfattning : This thesis consists of four papers dealing with estimation and inference for quantile regression of longitudinal data, with an emphasis on nonlinear models.The first paper extends the idea of quantile regression estimation from the case of cross-sectional data with independent errors to the case of linear or nonlinear longitudinal data with dependent errors, using a weighted estimator. LÄS MER

4. 8. Chronic Hypertension and Pregnancy : Epidemiological Aspects on Maternal and Perinatal Complications

   Författare :Karin Zetterström; Solveig Lindeberg; Ulf Hanson; Bengt Haglund; Henry Nisell; Uppsala universitet; []
   Nyckelord :Obstetrics and gynaecology; chronic hypertension; preeclampsia; gestational diabetes; abruptio placenta; SGA; perinatal death; stillbirth; neonatal death; gender; generation; Obstetrik och kvinnosjukdomar;

   Sammanfattning : These studies were undertaken to investigate risks of maternal and perinatal complications in pregnant women with chronic hypertensive disease, and to investigate future risk of preeclampsia in women born small for gestational age (SGA). Population based cohort studies using the Swedish Medical Birth Register from different years were performed. LÄS MER

5. 9. Impact of Geographical and Environmental Structures on Habitat Choice, Metapopulation Dynamics and Genetic Structure for Hazel Grouse (Bonasa bonasia)

   Författare :Jonas Sahlsten; Jacob Höglund; Eric Rapaport; Markku Pyykönen; Jon Swenson; Uppsala universitet; []
   Nyckelord :Ecology; Landscape; Patch occupancy model; Perimeter-area ratio; Geneland; Dispersal; Neighbourhood size; Ekologi;

   Sammanfattning : In this work suitable habitats for hazel grouse (Bonasa bonasia) were identified using ecological niche factor analysis (ENFA). The results from ENFA reveal that hazel grouse utilize a different and more restricted niche than what is generally available in the study area. LÄS MER

7. 10. Reforming a publicly owned monopoly : costs and incentives in railway maintenance

   Författare :Kristofer Odolinski; Jan-Eric Nilsson; Andrew Smith; Lars Hultkrantz; Marc Ivaldi; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Railway track; Maintenance; Contract; Incentive reward ; Competition; Cost; Quality; Economic efficiency; J01 Railway: Railway track; J01 Railway: Railway track; J13 Railway: Economics; J13 Railway: Economics; Economics;

   Sammanfattning : The railway system is often considered to be an industry where a monopoly occurs “naturally”, which can explain the public ownership and the use of regulations. However, railways in Europe have been subject to reforms during the last three decades. LÄS MER