Abstract

Two commonly used clustering criteria are single linkage, which maximizes the minimum distance between clusters, and complete linkage, which minimizes the maximum distance within a cluster. By synthesizing these criteria, partitions of objects are sought which maximize a combined measure of the minimum distance between clusters and the maximum distance within a cluster. Each combined measure is shown to select a partition in the single linkage hierarchy. Therefore, in effect, complete linkage is used to provide a stopping rule for single linkage. An algorithm is outlined which uses the distance between each pair of objects twice only. To illustrate the method, an example is given using 23 Glamorganshire soil profiles.

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