no code implementations • 27 Apr 2020 • Vahid Roostapour, Aneta Neumann, Frank Neumann
Evolutionary algorithms are bio-inspired algorithms that can easily adapt to changing environments.
no code implementations • 22 Apr 2020 • Vahid Roostapour, Jakob Bossek, Frank Neumann
We consider the Minimum Spanning Tree (MST) problem in a single- and multi-objective version, and introduce a biased mutation, which puts more emphasis on the selection of edges of low rank in terms of low domination number.
no code implementations • 6 Mar 2019 • Mojgan Pourhassan, Vahid Roostapour, Frank Neumann
Similar to the classical case, the dynamic changes that we consider on the weighted vertex cover problem are adding and removing edges to and from the graph.
no code implementations • 13 Feb 2019 • Vahid Roostapour, Mojgan Pourhassan, Frank Neumann
In this paper, variations of the Packing While Travelling (PWT) -- also known as the non-linear knapsack problem -- are studied as an attempt to analyse the behaviour of EAs on non-linear problems from theoretical perspective.
no code implementations • 14 Nov 2018 • Vahid Roostapour, Aneta Neumann, Frank Neumann, Tobias Friedrich
We also consider EAMC, a new evolutionary algorithm with polynomial expected time guarantee to maintain $\phi$ approximation ratio, and NSGA-II with two different population sizes as advanced multi-objective optimization algorithm, to demonstrate their challenges in optimizing the maximum coverage problem.
no code implementations • 22 Jun 2018 • Vahid Roostapour, Mojgan Pourhassan, Frank Neumann
Many real-world optimization problems occur in environments that change dynamically or involve stochastic components.