Search Results for author: Thomas Bartz-Beielstein

Found 26 papers, 11 papers with code

Simplifying Hyperparameter Tuning in Online Machine Learning -- The spotRiverGUI

1 code implementation18 Feb 2024 Thomas Bartz-Beielstein

The `spotRiver` package provides a framework for hyperparameter tuning of OML models.

Anomaly Detection

Hyperparameter Tuning Cookbook: A guide for scikit-learn, PyTorch, river, and spotPython

1 code implementation17 Jul 2023 Thomas Bartz-Beielstein

This document provides a comprehensive guide to hyperparameter tuning using spotPython for scikit-learn, PyTorch, and river.

PyTorch Hyperparameter Tuning - A Tutorial for spotPython

2 code implementations19 May 2023 Thomas Bartz-Beielstein

In addition to an introduction to spotPython, this tutorial also includes a brief comparison with Ray Tune, a Python library for running experiments and tuning hyperparameters.

Hyperparameter Optimization

Impact of Energy Efficiency on the Morphology and Behaviour of Evolved Robots

1 code implementation12 Jul 2021 Margarita Rebolledo, Daan Zeeuwe, Thomas Bartz-Beielstein, A. E. Eiben

In this paper, we mitigate this problem by extending our simulator with a battery model and taking energy consumption into account during fitness evaluations.

Behavior-based Neuroevolutionary Training in Reinforcement Learning

1 code implementation17 May 2021 Jörg Stork, Martin Zaefferer, Nils Eisler, Patrick Tichelmann, Thomas Bartz-Beielstein, A. E. Eiben

In addition to their undisputed success in solving classical optimization problems, neuroevolutionary and population-based algorithms have become an alternative to standard reinforcement learning methods.

Evolutionary Algorithms reinforcement-learning +1

Technical Report: Flushing Strategies in Drinking Water Systems

no code implementations25 Dec 2020 Margarita Rebolledo, Sowmya Chandrasekaran, Thomas Bartz-Beielstein

In this report a non-exhaustive overview of optimization methods for flushing in WDS is given.

Hospital Capacity Planning Using Discrete Event Simulation Under Special Consideration of the COVID-19 Pandemic

1 code implementation14 Dec 2020 Thomas Bartz-Beielstein, Frederik Rehbach, Olaf Mersmann, Eva Bartz

There are benefits for medical professionals, e. g, analysis of the pandemic at local, regional, state and federal level, the consideration of special risk groups, tools for validating the length of stays and transition probabilities.

Management

Cognitive Capabilities for the CAAI in Cyber-Physical Production Systems

1 code implementation3 Dec 2020 Jan Strohschein, Andreas Fischbach, Andreas Bunte, Heide Faeskorn-Woyke, Natalia Moriz, Thomas Bartz-Beielstein

The goal of this architecture is to reduce the implementation effort of artificial intelligence (AI) algorithms in CPPS.

EventDetectR -- An Open-Source Event Detection System

no code implementations16 Nov 2020 Sowmya Chandrasekaran, Margarita Rebolledo, Thomas Bartz-Beielstein

EventDetectR: An efficient Event Detection System (EDS) capable of detecting unexpected water quality conditions.

Event Detection

Expected Improvement versus Predicted Value in Surrogate-Based Optimization

1 code implementation9 Jan 2020 Frederik Rehbach, Martin Zaefferer, Boris Naujoks, Thomas Bartz-Beielstein

Few results from the literature show evidence, that under certain conditions, expected improvement may perform worse than something as simple as the predicted value of the surrogate model.

Bayesian Optimization

Why we need an AI-resilient society

no code implementations18 Dec 2019 Thomas Bartz-Beielstein

Some of these threats to society are well-known, e. g., weapons or killer robots.

Surrogate Models for Enhancing the Efficiency of Neuroevolution in Reinforcement Learning

no code implementations22 Jul 2019 Jörg Stork, Martin Zaefferer, Thomas Bartz-Beielstein, A. E. Eiben

In detail, we investigate a) the potential of SMB-NE with respect to evaluation efficiency and b) how to select adequate input sets for the phenotypic distance measure in a reinforcement learning problem.

Evolutionary Algorithms reinforcement-learning +1

Improving NeuroEvolution Efficiency by Surrogate Model-based Optimization with Phenotypic Distance Kernels

no code implementations9 Feb 2019 Jörg Stork, Martin Zaefferer, Thomas Bartz-Beielstein

For these expensive optimization tasks, surrogate model-based optimization is frequently applied as it features a good evaluation efficiency.

Evolutionary Algorithms

A new Taxonomy of Continuous Global Optimization Algorithms

no code implementations27 Aug 2018 Jörg Stork, A. E. Eiben, Thomas Bartz-Beielstein

The extracted features of components or operators allow us to create a set of classification indicators to distinguish between a small number of classes.

Distance-based Kernels for Surrogate Model-based Neuroevolution

no code implementations20 Jul 2018 Jörg Stork, Martin Zaefferer, Thomas Bartz-Beielstein

The topology optimization of artificial neural networks can be particularly difficult if the fitness evaluations require expensive experiments or simulations.

An Empirical Approach For Probing the Definiteness of Kernels

no code implementations10 Jul 2018 Martin Zaefferer, Thomas Bartz-Beielstein, Günter Rudolph

We provide a proof-of-concept with 16 different distance measures for permutations.

Linear Combination of Distance Measures for Surrogate Models in Genetic Programming

no code implementations3 Jul 2018 Martin Zaefferer, Jörg Stork, Oliver Flasch, Thomas Bartz-Beielstein

We investigate how different genotypic and phenotypic distance measures can be used to learn Kriging models as surrogates.

Symbolic Regression

In a Nutshell -- The Sequential Parameter Optimization Toolbox

1 code implementation12 Dec 2017 Thomas Bartz-Beielstein, Martin Zaefferer, Frederik Rehbach

The sequential parameter optimization (SPOT) package for R is a toolbox for tuning and understanding simulation and optimization algorithms.

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