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Comments on 'Parallel Algorithms for Hierarchical Clustering and Cluster Validity'
October 1992 (vol. 14 no. 10)
pp. 1056-1057

In the above-titled paper, parallel implementations of hierarchical clustering algorithms that achieve O(n/sup 2/) computational time complexity and thereby improve on the baseline of sequential implementations are described. The latter are stated to be O(n/sup 3/), with the exception of the single-link method. The commenter points out that state-of-the-art hierarchical clustering algorithms have O(n/sup 2/) time complexity and should be referred to in preference to the O(n/sup 3/) algorithms, which were described in many texts in the 1970s. Some further references in the parallelizing of hierarchic clustering algorithms are provided.

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Index Terms:
parallel algorithms; pattern recognition; hierarchical clustering; cluster validity; computational time complexity; single-link method; computational complexity; parallel algorithms; pattern recognition
Citation:
F. Murtaugh, "Comments on 'Parallel Algorithms for Hierarchical Clustering and Cluster Validity'," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 14, no. 10, pp. 1056-1057, Oct. 1992, doi:10.1109/34.159908
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