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AN IMPROVED NICHE GENETIC ALGORITHM
A simulated annealing based niche genetic algorithm
(SANGA) has been presented to strength the optimization ability
of niche genetic algorithm (NGA). The improved idea is to define
niche formation using probability condition rather than simply
distance condition. Individuals who only have close neighbors are
inclined to build up niche; individuals who only have far
neighbors are likely to depart from niche. The feasibility and
validity of the proposed method is proved by the contrast
between current NGA based on penalty, NGA based on fitness
sharing, NGA based on deterministic crowding and SANGA in
some simulation experiments and applications of 0-1 knapsack
problem.
2014-04-23
COVERAGE OPTIMIZATION METHODS IN WIRELESS HOMO-SENSOR NETWORK
An improved particle swarm optimization (PSO) algorithm is designed for the grid based wireless homo-sensor network position problem. The proposed method, called guided method, introduces the simulation of migration process to PSO and its mutation algorithm, using a previous designed sparse position plan to guide the swarm to the optimization solution, and accelerates the search process. Experiments show not only the feasibility and validity of the proposed method but also a marked improvement in performance over traditional PSO.
2014-04-23
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