Search Results for author: Michel Lang

Found 12 papers, 6 papers with code

Automated Benchmark-Driven Design and Explanation of Hyperparameter Optimizers

1 code implementation29 Nov 2021 Julia Moosbauer, Martin Binder, Lennart Schneider, Florian Pfisterer, Marc Becker, Michel Lang, Lars Kotthoff, Bernd Bischl

Automated hyperparameter optimization (HPO) has gained great popularity and is an important ingredient of most automated machine learning frameworks.

Bayesian Optimization Hyperparameter Optimization

mlr3spatiotempcv: Spatiotemporal resampling methods for machine learning in R

1 code implementation25 Oct 2021 Patrick Schratz, Marc Becker, Michel Lang, Alexander Brenning

This contribution reviews the state-of-the-art in spatial and spatiotemporal cross-validation, and introduces the {R} package {mlr3spatiotempcv} as an extension package of the machine-learning framework {mlr3}.

BIG-bench Machine Learning Model Selection

Employing an Adjusted Stability Measure for Multi-Criteria Model Fitting on Data Sets with Similar Features

no code implementations15 Jun 2021 Andrea Bommert, Jörg Rahnenführer, Michel Lang

We propose the approach of tuning the hyperparameters of a predictive model in a multi-criteria fashion with respect to predictive accuracy and feature selection stability.

feature selection

mlr3proba: An R Package for Machine Learning in Survival Analysis

no code implementations18 Aug 2020 Raphael Sonabend, Franz J. Király, Andreas Bender, Bernd Bischl, Michel Lang

As machine learning has become increasingly popular over the last few decades, so too has the number of machine learning interfaces for implementing these models.

Benchmarking BIG-bench Machine Learning +1

Feature Selection Methods for Cost-Constrained Classification in Random Forests

no code implementations14 Aug 2020 Rudolf Jagdhuber, Michel Lang, Jörg Rahnenführer

Cost-sensitive feature selection describes a feature selection problem, where features raise individual costs for inclusion in a model.

Classification feature selection +2

High Dimensional Restrictive Federated Model Selection with multi-objective Bayesian Optimization over shifted distributions

1 code implementation24 Feb 2019 Xudong Sun, Andrea Bommert, Florian Pfisterer, Jörg Rahnenführer, Michel Lang, Bernd Bischl

To carry out a clinical research under this scenario, an analyst could train a machine learning model only on local data site, but it is still possible to execute a statistical query at a certain cost in the form of sending a machine learning model to some of the remote data sites and get the performance measures as feedback, maybe due to prediction being usually much cheaper.

Bayesian Optimization BIG-bench Machine Learning +2

mlrMBO: A Modular Framework for Model-Based Optimization of Expensive Black-Box Functions

4 code implementations9 Mar 2017 Bernd Bischl, Jakob Richter, Jakob Bossek, Daniel Horn, Janek Thomas, Michel Lang

We present mlrMBO, a flexible and comprehensive R toolbox for model-based optimization (MBO), also known as Bayesian optimization, which addresses the problem of expensive black-box optimization by approximating the given objective function through a surrogate regression model.

Bayesian Optimization regression +1

Cannot find the paper you are looking for? You can Submit a new open access paper.