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The goal of this research is to find how dependencies affect the capability of several feature selection approaches to extract of the relevant features for a classification purpose. The hypothesis is that more dependencies and higher level dependencies mean more complexity for the task. Some experiments are used to intend to discover some limitations of several feature selection approaches by altering...
Particle swarm optimization (PSO) has shown good search ability on many optimization problems. However, PSO easily suffers from local optima on some complex problems, such as multimodal function problems. This paper presents an improved PSO, namely IPSO, which employs an adaptive chaotic mutation operator. The adaptive mutation adjusts the step size of mutation in terms of the distance between the...
Co- and Ga-doped magnetites were synthesized at room temperature and CoFe 2 O 4 was synthesized at 60 °C. They were analyzed by Mössbauer analysis, X-ray diffraction, scan electron microscopy as well as magnetization determination. The information of composition, cation distribution in the spinel structure and the particle size distribution of the products were obtained. Meanwhile,...
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