Search Results for author: Thomas Augustin

Found 9 papers, 3 papers with code

Explaining Bayesian Optimization by Shapley Values Facilitates Human-AI Collaboration

no code implementations7 Mar 2024 Julian Rodemann, Federico Croppi, Philipp Arens, Yusuf Sale, Julia Herbinger, Bernd Bischl, Eyke Hüllermeier, Thomas Augustin, Conor J. Walsh, Giuseppe Casalicchio

We address this issue by proposing ShapleyBO, a framework for interpreting BO's proposals by game-theoretic Shapley values. They quantify each parameter's contribution to BO's acquisition function.

Bayesian Optimization Gaussian Processes

Evaluating machine learning models in non-standard settings: An overview and new findings

no code implementations23 Oct 2023 Roman Hornung, Malte Nalenz, Lennart Schneider, Andreas Bender, Ludwig Bothmann, Bernd Bischl, Thomas Augustin, Anne-Laure Boulesteix

Our findings corroborate the concern that standard resampling methods often yield biased GE estimates in non-standard settings, underscoring the importance of tailored GE estimation.

Robust Statistical Comparison of Random Variables with Locally Varying Scale of Measurement

1 code implementation22 Jun 2023 Christoph Jansen, Georg Schollmeyer, Hannah Blocher, Julian Rodemann, Thomas Augustin

Spaces with locally varying scale of measurement, like multidimensional structures with differently scaled dimensions, are pretty common in statistics and machine learning.

In all LikelihoodS: How to Reliably Select Pseudo-Labeled Data for Self-Training in Semi-Supervised Learning

1 code implementation2 Mar 2023 Julian Rodemann, Christoph Jansen, Georg Schollmeyer, Thomas Augustin

As a practical proof of concept, we spotlight the application of three of our robust extensions on simulated and real-world data.

Model Selection

Approximately Bayes-Optimal Pseudo Label Selection

no code implementations17 Feb 2023 Julian Rodemann, Jann Goschenhofer, Emilio Dorigatti, Thomas Nagler, Thomas Augustin

We derive this selection criterion by proving Bayes optimality of the posterior predictive of pseudo-samples.

Additive models Pseudo Label

Multi-Target Decision Making under Conditions of Severe Uncertainty

no code implementations13 Dec 2022 Christoph Jansen, Georg Schollmeyer, Thomas Augustin

The quality of consequences in a decision making problem under (severe) uncertainty must often be compared among different targets (goals, objectives) simultaneously.

Decision Making

Statistical Comparisons of Classifiers by Generalized Stochastic Dominance

no code implementations5 Sep 2022 Christoph Jansen, Malte Nalenz, Georg Schollmeyer, Thomas Augustin

This yields indeed a powerful framework for the statistical comparison of classifiers over multiple data sets with respect to multiple quality criteria simultaneously.

Accounting for Gaussian Process Imprecision in Bayesian Optimization

1 code implementation16 Nov 2021 Julian Rodemann, Thomas Augustin

In this paper, we propose Prior-mean-RObust Bayesian Optimization (PROBO) that outperforms classical BO on specific problems.

Bayesian Optimization Gaussian Processes

Information efficient learning of complexly structured preferences: Elicitation procedures and their application to decision making under uncertainty

no code implementations19 Oct 2021 Christoph Jansen, Hannah Blocher, Thomas Augustin, Georg Schollmeyer

The first approach directly utilizes the collected ranking data for obtaining the ordinal part of the preferences, while their cardinal part is constructed implicitly by measuring meta data on the decision maker's consideration times.

Decision Making Decision Making Under Uncertainty

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