55 resultados para Generalized Gibbs sampler


Relevância:

20.00% 20.00%

Publicador:

Resumo:

2000 Mathematics Subject Classification: 26A33, 33C20

Relevância:

20.00% 20.00%

Publicador:

Resumo:

2000 Mathematics Subject Classification: 35E45

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: 30B10, 30B30; 33C10, 33C20

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: Primary 33E20, 44A10; Secondary 33C10, 33C20, 44A20

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: 33C05, 33C10, 33C20, 33C60, 33E12, 33E20, 40A30

Relevância:

20.00% 20.00%

Publicador:

Resumo:

2000 Mathematics Subject Classification: Primary 46F25, 26A33; Secondary: 46G20

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: 33D60, 33D90, 26A33

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: 44A05, 44A35

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Mathematics Subject Classification: 33C60, 33C20, 44A15

Relevância:

20.00% 20.00%

Publicador:

Resumo:

2000 Mathematics Subject Classification: 26A33, 33C60, 44A20

Relevância:

20.00% 20.00%

Publicador:

Resumo:

AMS Subj. Classification: 90C27, 05C85, 90C59

Relevância:

20.00% 20.00%

Publicador:

Resumo:

We develop, implement and study a new Bayesian spatial mixture model (BSMM). The proposed BSMM allows for spatial structure in the binary activation indicators through a latent thresholded Gaussian Markov random field. We develop a Gibbs (MCMC) sampler to perform posterior inference on the model parameters, which then allows us to assess the posterior probabilities of activation for each voxel. One purpose of this article is to compare the HJ model and the BSMM in terms of receiver operating characteristics (ROC) curves. Also we consider the accuracy of the spatial mixture model and the BSMM for estimation of the size of the activation region in terms of bias, variance and mean squared error. We perform a simulation study to examine the aforementioned characteristics under a variety of configurations of spatial mixture model and BSMM both as the size of the region changes and as the magnitude of activation changes.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

MSC 2010: 30C45, 30A20, 34A40

Relevância:

20.00% 20.00%

Publicador:

Resumo:

MSC 2010: 26A33, 46Fxx, 58C05 Dedicated to 80-th birthday of Prof. Rudolf Gorenflo

Relevância:

20.00% 20.00%

Publicador:

Resumo:

2000 Mathematics Subject Classification: 90C26, 90C20, 49J52, 47H05, 47J20.