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In today's era is the era of information technology rapid development, with the constant progress of the society, the network technology is in constant development, now the network is essential in our daily life people less a thing. Using the network, at home the whole messy, never leave home can know...

Nowadays, the living standard of our society has risen obviously. Along with the continuous development and progress of the economy, the educational work of colleges and universities has made rapid progress. At present, the education department of our country has made it clear that in the efficient teaching...

Concept hierarchies are important for generalization in many data mining applications. We propose a method to automatically build a concept hierarchy from a provided distance matrix. The method is a modification of traditional agglomerative hierarchical clustering algorithm. When two closest clusters...