Search Results for author: Niki van Stein

Found 7 papers, 1 papers with code

A Deep Dive into Effects of Structural Bias on CMA-ES Performance along Affine Trajectories

no code implementations26 Apr 2024 Niki van Stein, Sarah L. Thomson, Anna V. Kononova

To guide the design of better iterative optimisation heuristics, it is imperative to understand how inherent structural biases within algorithm components affect the performance on a wide variety of search landscapes.

Bias Detection

A Functional Analysis Approach to Symbolic Regression

no code implementations9 Feb 2024 Kirill Antonov, Roman Kalkreuth, Kaifeng Yang, Thomas Bäck, Niki van Stein, Anna V Kononova

The superior performance of the proposed algorithm and insights into the limitations of GP open the way for further advancing GP for SR and related areas of explainable machine learning.

Benchmarking regression +1

Shapelet-based Model-agnostic Counterfactual Local Explanations for Time Series Classification

no code implementations2 Feb 2024 Qi Huang, Wei Chen, Thomas Bäck, Niki van Stein

In this work, we propose a model-agnostic instance-based post-hoc explainability method for time series classification.

Classification counterfactual +2

Explainable Benchmarking for Iterative Optimization Heuristics

1 code implementation31 Jan 2024 Niki van Stein, Diederick Vermetten, Anna V. Kononova, Thomas Bäck

Introducing the IOH-Xplainer software framework, for analyzing and understanding the performance of various optimization algorithms and the impact of their different components and hyper-parameters.

Benchmarking Evolutionary Algorithms

Clustering-based Domain-Incremental Learning

no code implementations21 Sep 2023 Christiaan Lamers, Rene Vidal, Nabil Belbachir, Niki van Stein, Thomas Baeck, Paris Giampouras

A key challenge in this setting is the so-called "catastrophic forgetting problem", in which the performance of the learner in an "old task" decreases when subsequently trained on a "new task".

Clustering Continual Learning +2

Challenges of ELA-guided Function Evolution using Genetic Programming

no code implementations24 May 2023 Fu Xing Long, Diederick Vermetten, Anna V. Kononova, Roman Kalkreuth, Kaifeng Yang, Thomas Bäck, Niki van Stein

Within the optimization community, the question of how to generate new optimization problems has been gaining traction in recent years.

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