Neural Networks - 2003 Special issue: Neural network analysis of complex scientific data: Astronomy and geosciences
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In this paper a hybrid system and a hierarchical neural-net approaches are proposed to solve the automatic labeling problem for unsupervised clustering. The first method involves the application of nonneural clustering algorithms directly to the output of a neural net; and the second one is based on a multilayer organization of neural units. Both methods are a substantial improvement with respect to the most important unsupervised neural algorithms existing in the literature. Experimental results are shown to illustrate clustering performance of the systems