Bayesian Effect Selection in Structured Additive Distributional Regression Models
نویسندگان
چکیده
We propose a novel spike and slab prior specification with scaled beta prime marginals for the importance parameters of regression coefficients to allow general effect selection within class structured additive distributional regression. This enables us model effects on all arbitrary parametric distributions, consider various types such as non-linear or spatial well hierarchical structures. Our relies parameter expansion that separates blocks into overall scalar vectors standardised coefficients. Hence, we can work quantity instead possibly high-dimensional vector, which yields improved shrinkage sampling performance compared classical normal-inverse-gamma prior. investigate propriety posterior, show desirable properties, way eliciting provide efficient Markov Chain Monte Carlo sampling. Using both simulated three large-scale data sets, our approach is applicable potentially large number covariates, multilevel predictors accounting hierarchically nested non-standard response bivariate normal zero-inflated Poisson.
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ژورنال
عنوان ژورنال: Bayesian Analysis
سال: 2021
ISSN: ['1936-0975', '1931-6690']
DOI: https://doi.org/10.1214/20-ba1214