no code implementations • 28 Feb 2022 • Mohamed El Yafrani, Marcella Scoczynski, Myriam Delgado, Ricardo Lüders, Peter Nielsen, Markus Wagner
Since its inception in 2013, the Travelling Thief Problem (TTP) has been widely studied as an example of problems with multiple interconnected sub-problems.
no code implementations • 29 Apr 2020 • Marcella Scoczynski Ribeiro Martins, Mohamed El Yafrani, Myriam R. B. S. Delgado, Ricardo Luders
A Local Optima Network (LON) is a graph model that compresses the fitness landscape of a particular combinatorial optimization problem based on a specific neighborhood operator and a local search algorithm.
no code implementations • 27 Apr 2020 • Mohamed El Yafrani, Marcella Scoczynski Ribeiro Martins, Inkyung Sung, Markus Wagner, Carola Doerr, Peter Nielsen
In contrast to most static (feature-independent) algorithm tuning engines such as irace and SPOT, our approach aims to derive the best parameter configuration of a given algorithm for a specific problem, exploiting the relationships between the algorithm parameters and the features of the problem.
no code implementations • 1 Mar 2019 • Mohamed El Yafrani
In fact, a PMIC can be considered simply as a single optimisation problem and the dependencies between components could be investigated by studying the decomposability of the problem and the correlations between the sub-problems.
no code implementations • 15 Feb 2019 • Mohamed El Yafrani, Marcella S. R. Martins, Myriam R. B. S. Delgado, Inkyung Sung, Ricardo Lüders, Markus Wagner
This step should be completed at each iteration of BOA, resulting in a very time-consuming process.
no code implementations • 22 Jun 2016 • Mohamed El Yafrani, Belaïd Ahiod
This extended abstract presents an overview on NP-hard optimization problems with multiple interdependent components.
no code implementations • 23 Mar 2016 • Mohamed El Yafrani, Belaïd Ahiod
Real-world problems are very difficult to optimize.