Technical Comments

Response to Comment on "Clustering by Passing Messages Between Data Points"

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Science  08 Feb 2008:
Vol. 319, Issue 5864, pp. 726
DOI: 10.1126/science.1151268

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Affinity propagation (AP) can be viewed as a generalization of the vertex substitution heuristic (VSH), whereby probabilistic exemplar substitutions are performed concurrently. Although results on small data sets (≤900 points) demonstrate that VSH is competitive with AP, we found VSH to be prohibitively slow for moderate-to-large problems, whereas AP was much faster and could achieve lower error.

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