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Gene expression programming (GEP) is a new evolutionary algorithm, which has the very good applications in the field of function finding. In view of the insufficiency of traditional GEP, this paper puts forward an improved gene expression programming algorithm based on hybrid strategy (HSI-GEP). This paper has two improvements: (1) using mirror and reset mechanism to replace the inferior individuals...
Harmonics make a great impact on the stable and safe operation of power system in modern society. Empirical mode decomposition enhanced with masking signals could properly extract harmonic components from time-varying power signals, while the parameters for constructing masking signals display a strong influence on the decomposition accuracy. In this paper, recursive cooperative swarm optimization...
On the basis of analyzing the insufficiency of genetic algorithm in the solution of distribution network reconfiguration, an improved immune genetic algorithm (IIGA) is proposed. The key of IIGA lies in the construction of vaccine pool and the design of immune operator. The vaccine pool can be created and updated automatically, and the immune operator consists of vaccination and immunoassay. In addition,...
Sensing reliability is an important issue in wireless sensor networks because of the generally existing failures of sensor nodes. In this paper, we design a reputation-based method to assure sensing reliability for acoustic target location estimation. Sensor reputation is defined here as the probability that a node's measurement is trustable, i.e., reputation actually represents the sensing reliability...
In order to improve the performance of genetic algorithm solving distribution network (DN) reconfiguration, a genetic algorithm based on gene therapy (GTGA) is applied in this problem. A new topology structure description method is proposed. The methods of creating and updating gene pool are given, and the therapy operator, which consists of removing and insertion operation, is designed. The feasibility...
On the basis of the analysis of canonical genetic algorithm's shortage, a novel genetic algorithm based on dynastic changes mechanism of nation (DCGA) is proposed. In DCGA, populations one by one evolve according to the relay race mode, by which the DCGA holds a mechanism of transferring from a local optimal solution to another better one and finally finding the global optimal solution under the guidance...
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