2026
Improved Runtime Guarantees for the SPEA2 Multi-Objective Optimizer
AAAI 2026technical
Together with the NSGA-II, the SPEA2 is one of the most widely used domination-based multi-objective evolutionary algorithms. For both algorithms, the known runtime guarantees are linear in the population size; for the NSGA-II, matching lower bounds exist. With a careful study of the more complex se