Abstract We improve convergence speed by two orders of magnitude and the global exploration capabilities particle swarm optimization (PSO) through targeted position-mutated elitism (TPME). The proposed fast-converging TPME operator requires a fitness-based classification technique to categorize particles. introduced is motivated its simplicity, low memory requirements, automated termination cri...

We analyse how the conventional Genetic Algorithm can be stripped down and reduced to its basics. We present a minimal, modified version that can be interpreted in terms of horizontal gene transfer, as in bacterial conjugation. Whilst its functionality is effectively similar to the conventional version, it is much easier to program, and recommended for both teaching purposes and practical appli...

In this chapter we present a brief analysis of the current research performed on evolutionary multiobjective optimization. After analyzing first and second generation multiobjective evolutionary algorithms, we address two important issues: the role of elitism in evolutionary multiobjective optimization and the way in which concepts from multiobjective optimization can be applied to constraint-h...

In this paper, we present performance comparisons between two popular elitism–based evolutionary multi-objective optimization algorithms -NSGA2 and SPEA2 in the presence of noise. Three test problems and six noise levels are employed in the research experiments. The results show that SPEA2 outperforms NSGA2 in the early generations. NSGA2, however, is superior during latter generations regardle...

Brazil's political history had long been marked by authoritarian, techno-bureaucratic regimes in which the state dominated over civil society. A political culture based on a tradition of clientelism and patrimonial elitism meant that the management of municipal public budgets (the 'black box' as it was known) was far from transparent. All this produced a society with extreme social inequalities...

The approach to computer aided hierarchical circuit design on the base of univariate algorithms was derived by the analysing the mathematical principles behind recombination. In this paper it is considered how to introduce mutation in this approach. A number of experiments applied to circuit design are discussed. Experiments indicate that mutation and elitism increase the performance of the alg...