Sökning: "Bayesian Bootstrap"
Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Bayesian Bootstrap.
1. Learning local predictive accuracy for expert evaluation and forecast combination
Sammanfattning : This thesis consists of four papers that study several topics related to expert evaluation and aggregation. Paper I explores the properties of Bayes factors. Bayes factors, which are used for Bayesian hypothesis testing as well as to aggregate models using Bayesian model averaging, are sometimes observed to behave erratically. LÄS MER
2. On the efficiency of the Bayesian bootstrap
Sammanfattning : The efficiency of the Bayesian bootstrap is treated for large and small samples from infinite and finite populations. The Bayesian bootstrap is compared with nonparametric and parametric Bayesian methods in the infinite case, for large samples and considering the mean and truncation functionals. LÄS MER
3. Multiple Kernel Imputation : A Locally Balanced Real Donor Method
Sammanfattning : We present an algorithm for imputation of incomplete datasets based on Bayesian exchangeability through Pólya sampling. Each (donee) unit with a missing value is imputed multiple times by observed (real) values on units from a donor pool. The donor pools are constructed using auxiliary variables. LÄS MER
4. Phylogenetic Support and Chloroplast Genome Evolution in Sileneae (Caryophyllaceae)
Sammanfattning : Evolutionary biology is dependent on accurate phylogenies. In this thesis two branch support methods, Bayesian posterior probablities and bootstrap frequencies, were evaluated with simulated data and empirical data from the chloroplast genome. LÄS MER
5. On Estimating Topology and Divergence Times in Phylogenetics
Sammanfattning : This PhD thesis consists of an introduction and five papers, dealing with statistical methods in phylogenetics.A phylogenetic tree describes the evolutionary relationships among species assuming that they share a common ancestor and that evolution takes place in a tree like manner. LÄS MER