Manuscript Number : IJSRSET1844338
Spatio-temporal Models Using R-INLA with Generalized Extreme Value Distribution in Hierarchical Bayes Regression
Authors(4) :-Ro'fah Nur Rachmawati, Anik Djuraidah, Anwar Fitrianto, I Made Sumertajaya
Spatio-temporal data containing information about space, time and its interaction allows researchers to describe potential geographical pattern. Bayesian method commonly used in describing spatio-temporal data is simulated based Markov Chain Monte Carlo (MCMC). However, MCMC may be extremely slow in the posterior inference simulation process and it becomes computationally unfeasible if the specified models are complex and designed hierarchically. The Integrated Nested Laplace Approximation (INLA) in R-INLA package is approximated based method and becomes a viable alternative to fundamental limitation of the expensive MCMC computation. This paper aims to model data using Bayes spatial and spatio-temporal models divided in parametric and non-parametric temporal trend specifications. We use the number of poor people as the response that fit to generalized extreme value distribution and investigate the geographical patterns among regions by adding the socioeconomics information data set in Bayes spatial model. In Bayes spatio-temporal models we conclude classical parametric temporal trend as the best model that can describe space-time interaction based on the smallest deviance criteria. All the estimation processes are performed efficiently with R-INLA resulting fast, accurate and guarantee of convergence posterior inferences compared to MCMC's convergence issues.
Ro'fah Nur Rachmawati
Areal Data, Gaussian Markov Random Field, Laplace Approximation, Random Walk
Publication Details
Published in :
Volume 4 | Issue 4 | March-April 2018 Article Preview
Statistics Department, School of Computer Science, Bina Nusantara University, Jakarta, Indonesia
Anik Djuraidah
Statistics Department, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia
Anwar Fitrianto
Statistics Department, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia
I Made Sumertajaya
Statistics Department, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia
Date of Publication :
2018-04-30
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) :
1129-1143
Manuscript Number :
IJSRSET1844338
Publisher : Technoscience Academy