Abstract
This article presents PFCM, a parallel algorithm for fuzzy clustering of large data sets. Being a generalization of FCM, the algorithm enables arbitrary numbers of data points, features and clusters to be handled cost-optimally by hypercube SIMD computers of arbitrary cube dimension, the only limitation being the size of the local memories of the processors. Speedup responds optimally to enlarging the hypercube. PFCM owes its flexibility to the technique employed in its derivation from the sequential fuzzy C-means algorithm FCM: the association of each of the three dimensions of the problem (numbers of data points, features and clusters) with a distinct subset of hypercube dimensions.
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