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The advantage of artificial neural network is that there is no need to devise a mathematical model in order to perform a specific task. It processes information through interconnected processing elements (neurons). In assessment of environmental quality, ANN is an efficient and objective classification method. However according to our experience, ANN produces are not always comply with real situation,...
In subject classification, principal component analysis is implemented as an objective and practical validation method, but the real data calculation shows that the result of principal component analysis is not always complied with the real situation. Sometimes, it can be totally messed up. Some problems exist regarding to this classification, while these problems are caused by the nature of principal...
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