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cs.LG2026

Provably Reduced Sample Cost in Prior-Guided Hyperparameter Optimization

Leona Hennig, Jasmin Brandt, Lukas Fehring +3

Large-scale hyperparameter optimization (HPO) in automated machine learning (AutoML) consumes substantial computational resources, raising growing concerns about scalability and en…

cs.LG2026

Dynamic Hyperparameter Importance for Efficient Multi-Objective Optimization

Daphne Theodorakopoulos, Marcel Wever, Marius Lindauer

Choosing a suitable ML model is a complex task that can depend on several objectives, e.g., accuracy, fairness, or energy consumption. In practice, this requires trading off multip…

cs.LG2026

Dynamic Priors in Bayesian Optimization for Hyperparameter Optimization

Lukas Fehring, Marcel Wever, Maximilian Spliethöver +3

Bayesian optimization (BO) is a widely used approach to hyperparameter optimization (HPO). However, most existing HPO methods only incorporate expert knowledge during initializatio…

cs.LG2025

State-Space Models for Tabular Prior-Data Fitted Networks

Felix Koch, Marcel Wever, Fabian Raisch +1

Recent advancements in foundation models for tabular data, such as TabPFN, demonstrated that pretrained Transformer architectures can approximate Bayesian inference with high predi…

cs.LG2025

DeepCAVE: A Visualization and Analysis Tool for Automated Machine Learning

Sarah Segel, Helena Graf, Edward Bergman +5

Hyperparameter optimization (HPO), as a central paradigm of AutoML, is crucial for leveraging the full potential of machine learning (ML) models; yet its complexity poses challenge…

cs.LG2025

HyperSHAP: Shapley Values and Interactions for Explaining Hyperparameter Optimization

Marcel Wever, Maximilian Muschalik, Fabian Fumagalli +1

Hyperparameter optimization (HPO) is a crucial step in achieving strong predictive performance. Yet, the impact of individual hyperparameters on model generalization is highly cont…