Search Results for author: Andre Opris

Found 6 papers, 0 papers with code

Runtime Analyses of NSGA-III on Many-Objective Problems

no code implementations17 Apr 2024 Andre Opris, Duc-Cuong Dang, Frank Neumann, Dirk Sudholt

NSGA-II and NSGA-III are two of the most popular evolutionary multi-objective algorithms used in practice.

A Tight $O(4^k/p_c)$ Runtime Bound for a ($μ$+1) GA on Jump$_k$ for Realistic Crossover Probabilities

no code implementations10 Apr 2024 Andre Opris, Johannes Lengler, Dirk Sudholt

This yields an improved and tight time bound of $O(\mu n \log(k) + 4^k/p_c)$ for a range of~$k$ under the mild assumptions $p_c = O(1/k)$ and $\mu \in \Omega(kn)$.

Evolutionary Algorithms

Analysing the Robustness of NSGA-II under Noise

no code implementations7 Jun 2023 Duc-Cuong Dang, Andre Opris, Bahare Salehi, Dirk Sudholt

To our knowledge, this is the first proof that NSGA-II can outperform GSEMO and the first runtime analysis of NSGA-II in noisy optimisation.

Evolutionary Algorithms

Analysing Equilibrium States for Population Diversity

no code implementations19 Apr 2023 Johannes Lengler, Andre Opris, Dirk Sudholt

We give an exact formula for the drift of population diversity and show that it is driven towards an equilibrium state.

Evolutionary Algorithms

Crossover Can Guarantee Exponential Speed-Ups in Evolutionary Multi-Objective Optimisation

no code implementations31 Jan 2023 Duc-Cuong Dang, Andre Opris, Dirk Sudholt

We provide a theoretical analysis of the well-known EMO algorithms GSEMO and NSGA-II to showcase the possible advantages of crossover: we propose classes of "royal road" functions on which these algorithms cover the whole Pareto front in expected polynomial time if crossover is being used.

Evolutionary Algorithms

Differentiability Properties of Log-Analytic Functions

no code implementations7 Jul 2020 Tobias Kaiser, Andre Opris

We show that the derivative of a log-analytic function is log-analytic.

Logic Algebraic Geometry Classical Analysis and ODEs 03C64, 14P15, 26A09, 26E05, 26E10, 32B20

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