Question 1: In statistics, hierarchical clustering is a method of ________ which seeks to build a hierarchy of clusters. | |||
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Question 2: In most methods of hierarchical clustering, this is achieved by use of an appropriate metric (a measure of ________ between pairs of observations), and a linkage criteria which specifies the dissimilarity of sets as a function of the pairwise distances of observations in the sets. | |||
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Question 3: For text or other non-numeric data, metrics such as the Hamming distance or ________ are often used. | |||
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