Search Results for author: Juho Piironen

Found 7 papers, 5 papers with code

A Decision-Theoretic Approach for Model Interpretability in Bayesian Framework

1 code implementation21 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.

Interpretable Machine Learning

Implicitly Adaptive Importance Sampling

2 code implementations20 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.

Projective Inference in High-dimensional Problems: Prediction and Feature Selection

1 code implementation4 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.

feature selection Vocal Bursts Intensity Prediction

Bayesian Estimation of Gaussian Graphical Models with Projection Predictive Selection

1 code implementation17 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

Variable selection for Gaussian processes via sensitivity analysis of the posterior predictive distribution

2 code implementations21 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.

Gaussian Processes Variable Selection

Iterative Supervised Principal Components

no code implementations17 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

Comparison of Bayesian predictive methods for model selection

no code implementations30 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.

Model Selection

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