Sökning: "Bayes"

Visar resultat 1 - 5 av 57 avhandlingar innehållade ordet Bayes.

1. 1. Empirical Bayes Methods for DNA Microarray Data

   Författare :Ingrid Lönnstedt; Allan Gut; Tom Britton; Mette Langaas; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical statistics; two-channel microarrays; differential expression; replication; empirical Bayes; factorial design; interaction; time trends; hierarchical Bayes; MCMC simulations; ANOVA; F-statistics; Matematisk statistik; Mathematical statistics; Matematisk statistik;

   Sammanfattning : cDNA microarrays is one of the first high-throughput gene expression technologies that has emerged within molecular biology for the purpose of functional genomics. cDNA microarrays compare the gene expression levels between cell samples, for thousands of genes simultaneously. LÄS MER

3. 2. Approximations of Bayes Classifiers for Statistical Learning of Clusters

   Författare :Magnus Ekdahl; Timo Koski; Jukka Corander; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pattern Recognition; Stochastic Complexity; Naïve Bayes; Bayesian Network; Classification; Clustering; Chow-Liu trees; Mathematical statistics; Matematisk statistik;

   Sammanfattning : It is rarely possible to use an optimal classifier. Often the classifier used for a specific problem is an approximation of the optimal classifier. Methods are presented for evaluating the performance of an approximation in the model class of Bayesian Networks. LÄS MER

4. 3. Coping with Misbehavior in Mobile Ad-hoc Networks

   Författare :Sonja Buchegger; Jean-Yves Le Boudec; EPFL; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; mobile ad-hoc networks; incentives; cooperation; reputation systems; Bayes; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : n this work, we address the question of how to enable a system to operate despite the presence of misbehavior. Specifically, in a mobile ad-hoc network, how can we keep the network functional for normal nodes when other nodes do not route and forward correctly? Node misbehavior due to selfish or malicious reasons or faulty nodes can significantly degrade the performance of mobile ad-hoc networks. LÄS MER

5. 4. Categorization Work in the Swedish Welfare State : Doctors and social insurance officers on persons with mental ill-health

   Författare :Maricel L Knechtel; Michael Allvin; Rafael Lindqvist; Sandra Torres; David Rosenberg; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; institutional categorization; institutional categories; street-level bureaucrats; discretion; sick leave; sick listing; diagnosis; mental illness; psychiatric diagnosis; moral work; deservingness; worthiness; medical sociology; work capability; medical certification; social insurance; vignette studies; discrimination; labeling; stickiness; social mechanisms; matching; screening; signaling; cognitive categorization; working conditions; conflicting demands; client processing; Human Service Organizations; work approach; primary health care; moral stress; Bayes; work capability; rationing; Sociologi; Sociology;

   Sammanfattning : This dissertation contributes to the debate on street-level bureaucracy, which highlights how the decisions made by workers in public bureaucracies effectively become public policy. This debate has paid relatively little attention to the study of how professionals carry out their work by means of institutional categorization, a knowledge gap that this study helps to close. LÄS MER

7. 5. Estimations of Hydrogeological Properties in Vulnerability and Risk Assessments

   Författare :Lars Rosen; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; groundwater; Markov; conceptual model; Bayes; risk; vulnerability;

   Sammanfattning : The main objective of this thesis was to evaluate and develop approaches for hydrogeological vulnerability and risk assessments, starting with scant data and updating the results as new information becomes available. This work was performed within three separate projects between 1989 and 1995. LÄS MER