1 code implementation • 21 Oct 2019 • Homayun Afrabandpey, Tomi Peltola, Juho Piironen, Aki Vehtari, Samuel Kaski
Through experiments on real-word data sets, using decision trees as interpretable models and Bayesian additive regression models as reference models, we show that for the same level of interpretability, our approach generates more accurate models than the alternative of restricting the prior.
2 code implementations • 20 Jun 2019 • Topi Paananen, Juho Piironen, Paul-Christian Bürkner, Aki Vehtari
Adaptive importance sampling is a class of techniques for finding good proposal distributions for importance sampling.
1 code implementation • 4 Oct 2018 • Juho Piironen, Markus Paasiniemi, Aki Vehtari
This paper discusses predictive inference and feature selection for generalized linear models with scarce but high-dimensional data.
1 code implementation • 17 Jan 2018 • Donald R. Williams, Juho Piironen, Aki Vehtari, Philippe Rast
Here we introduce a Bayesian method for estimating sparse matrices, in which conditional relationships are determined with projection predictive selection.
Applications Methodology
2 code implementations • 21 Dec 2017 • Topi Paananen, Juho Piironen, Michael Riis Andersen, Aki Vehtari
Variable selection for Gaussian process models is often done using automatic relevance determination, which uses the inverse length-scale parameter of each input variable as a proxy for variable relevance.
no code implementations • 17 Oct 2017 • Juho Piironen, Aki Vehtari
In high-dimensional prediction problems, where the number of features may greatly exceed the number of training instances, fully Bayesian approach with a sparsifying prior is known to produce good results but is computationally challenging.
Methodology
no code implementations • 30 Mar 2015 • Juho Piironen, Aki Vehtari
From a predictive viewpoint, best results are obtained by accounting for model uncertainty by forming the full encompassing model, such as the Bayesian model averaging solution over the candidate models.