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Definition of "cluster analysis" |
in pattern recognition, the unsupervised analysis of samples to cluster them into classes based on (a) a distance metric and (b) a clustering algorithm. Typical algorithms minimize a cluster criterion (e.g., representation error) by grouping samples hierarchically or by iteratively reassigning samples to clusters. The K-means algorithm is an example of the latter. In the case of 2-D measurements, cluster analysis becomes a method of image segmentation. |
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