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stat.CO2021
A numerically stable online implementation and exploration of WAIC through variations of the predictive density, using NIMBLE
Joshua E. Hug, Christopher J. Paciorek
We go through the process of crafting a robust and numerically stable online algorithm for the computation of the Watanabe-Akaike information criteria (WAIC). We implement this alg…
stat.ME2021
Computational strategies and estimation performance with Bayesian semiparametric Item Response Theory models
Sally Paganin, Christopher J. Paciorek, Claudia Wehrhahn +3
Item response theory (IRT) models typically rely on a normality assumption for subject-specific latent traits, which is often unrealistic in practice. Semiparametric extensions bas…