Sökning: "generalised linear model"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden generalised linear model.

1. 1. Generalised linear models with clustered data

   Författare :Henrik Holmberg; Göran Broström; Kenneth Carling; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistics; Statistik; Statistics; statistik;

   Sammanfattning : In situations where a large data set is partitioned into many relativelysmall clusters, and where the members within a cluster have some common unmeasured characteristics, the number of parameters requiring estimation tends to increase with sample size if a fixed effects model is applied. This fact causes the assumptions underlying asymptotic results to be violated. LÄS MER

3. 2. Weighted Analysis of Microarray Experiments

   Författare :Anders Sjögren; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DNA microarray; differential expression; gene expression; quality control QC ; quality assurance QA ; quality assessment; generalised linear model; empirical Bayes; weighted moderated statistic; invalid p-value; heteroscedasticity; WAME; heteroscedasticity;

   Sammanfattning : DNA microarrays are strikingly efficient tools for analysing gene expression for large sets of genes simultaneously. The aim is often to identify genes which are differentially expressed between some studied conditions, thereby gaining insight into which cellular mechanisms are differently active between the conditions. LÄS MER

4. 3. Explicit Influence Analysis in Crossover Models

   Författare :Chengcheng Hao; Tatjana von Rosen; Dietrich von Rosen; Tapio Nummi; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; explicit maximum likelihood estimate; generalised mixed linear model; influential observation; perturbation scheme; statistical diagnostics; Statistics; statistik;

   Sammanfattning : This dissertation develops influence diagnostics for crossover models. Mixed linear models and generalised mixed linear models are utilised to investigate continuous and count data from crossover studies, respectively. LÄS MER

5. 4. Improved Bridge Evaluation

   Författare :Hendrik Schlune; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model updating; structural identification; Bridge evaluation; concrete structures; finite element analysis; finite element method; load cases;

   Sammanfattning : Accurate structural models are required for optimal management of existing bridges and economical new ones. However, unavoidable modelling uncertainties and difficulty in modelling the non-linear response of concrete bridges can lead to structural models which do not fulfil this requirement. LÄS MER

7. 5. Visualisation and Generalisation of 3D City Models

   Författare :Bo Mao; Yifang Ban; Lars Harrie; Monika Sester; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D city models; visualisation; generalisation; multiple representation structure; similarity evaluation; aggregation; typification; shell model; street index; texture compression; texture segmentation; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : 3D city models have been widely used in various applications such as urban planning, traffic control, disaster management etc. Efficient visualisation of 3D city models in different levels of detail (LODs) is one of the pivotal technologies to support these applications. LÄS MER