Search Results for author: Jacob de Nobel

Found 15 papers, 4 papers with code

MO-IOHinspector: Anytime Benchmarking of Multi-Objective Algorithms using IOHprofiler

no code implementations10 Dec 2024 Diederick Vermetten, Jeroen Rook, Oliver L. Preuß, Jacob de Nobel, Carola Doerr, Manuel López-Ibañez, Heike Trautmann, Thomas Bäck

Benchmarking is one of the key ways in which we can gain insight into the strengths and weaknesses of optimization algorithms.

Sampling in CMA-ES: Low Numbers of Low Discrepancy Points

no code implementations24 Sep 2024 Jacob de Nobel, Diederick Vermetten, Thomas H. W. Bäck, Anna V. Kononova

For lower dimensionalities (below 10), we find that using as little as 32 unique low discrepancy points performs similar or better than uniform sampling.

Evolving Reliable Differentiating Constraints for the Chance-constrained Maximum Coverage Problem

no code implementations29 May 2024 Saba Sadeghi Ahouei, Jacob de Nobel, Aneta Neumann, Thomas Bäck, Frank Neumann

Our experiments show that our approach is highly successful in solving the instability issue of the performance ratios and leads to evolving reliable sets of chance constraints with significantly different performance for various types of algorithms.

Avoiding Redundant Restarts in Multimodal Global Optimization

no code implementations2 May 2024 Jacob de Nobel, Diederick Vermetten, Anna V. Kononova, Ofer M. Shir, Thomas Bäck

Na\"ive restarts of global optimization solvers when operating on multimodal search landscapes may resemble the Coupon's Collector Problem, with a potential to waste significant function evaluations budget on revisiting the same basins of attractions.

Solving Deep Reinforcement Learning Tasks with Evolution Strategies and Linear Policy Networks

1 code implementation10 Feb 2024 Annie Wong, Jacob de Nobel, Thomas Bäck, Aske Plaat, Anna V. Kononova

We benchmark both deep policy networks and networks consisting of a single linear layer from observations to actions for three gradient-based methods, such as Proximal Policy Optimization.

Atari Games Deep Reinforcement Learning +2

Computing Star Discrepancies with Numerical Black-Box Optimization Algorithms

no code implementations29 Jun 2023 François Clément, Diederick Vermetten, Jacob de Nobel, Alexandre D. Jesus, Luís Paquete, Carola Doerr

In this work we compare 8 popular numerical black-box optimization algorithms on the $L_{\infty}$ star discrepancy computation problem, using a wide set of instances in dimensions 2 to 15.

Numerical Integration

When to be Discrete: Analyzing Algorithm Performance on Discretized Continuous Problems

no code implementations25 Apr 2023 André Thomaser, Jacob de Nobel, Diederick Vermetten, Furong Ye, Thomas Bäck, Anna V. Kononova

In this work, we use the notion of the resolution of continuous variables to discretize problems from the continuous domain.

Optimizing Stimulus Energy for Cochlear Implants with a Machine Learning Model of the Auditory Nerve

no code implementations14 Nov 2022 Jacob de Nobel, Anna V. Kononova, Jeroen Briaire, Johan Frijns, Thomas Bäck

In the second part of this paper, the Convolutional Neural Network surrogate model was used by an Evolutionary Algorithm to optimize the shape of the stimulus waveform in terms energy efficiency.

Per-run Algorithm Selection with Warm-starting using Trajectory-based Features

no code implementations20 Apr 2022 Ana Kostovska, Anja Jankovic, Diederick Vermetten, Jacob de Nobel, Hao Wang, Tome Eftimov, Carola Doerr

In contrast to other recent work on online per-run algorithm selection, we warm-start the second optimizer using information accumulated during the first optimization phase.

Time Series Analysis

Trajectory-based Algorithm Selection with Warm-starting

no code implementations13 Apr 2022 Anja Jankovic, Diederick Vermetten, Ana Kostovska, Jacob de Nobel, Tome Eftimov, Carola Doerr

We study the quality and accuracy of performance regression and algorithm selection models in the scenario of predicting different algorithm performances after a fixed budget of function evaluations.

regression

IOHexperimenter: Benchmarking Platform for Iterative Optimization Heuristics

1 code implementation7 Nov 2021 Jacob de Nobel, Furong Ye, Diederick Vermetten, Hao Wang, Carola Doerr, Thomas Bäck

IOHexperimenter can be used as a stand-alone tool or as part of a benchmarking pipeline that uses other components of IOHprofiler such as IOHanalyzer, the module for interactive performance analysis and visualization.

Bayesian Optimization Benchmarking

Explorative Data Analysis of Time Series based AlgorithmFeatures of CMA-ES Variants

no code implementations16 Apr 2021 Jacob de Nobel, Hao Wang, Thomas Bäck

From our analysis, we saw that the features can classify the CMA-ES variants, or the function groups decently, and show a potential for predicting the performance of those variants.

Clustering feature selection +2

Tuning as a Means of Assessing the Benefits of New Ideas in Interplay with Existing Algorithmic Modules

1 code implementation25 Feb 2021 Jacob de Nobel, Diederick Vermetten, Hao Wang, Carola Doerr, Thomas Bäck

However, when introducing a new component into an existing algorithm, assessing its potential benefits is a challenging task.

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