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By Mohammed J. Zaki, Jeffrey Xu Yu, B. Ravindran, Vikram Pudi

This ebook constitutes the complaints of the 14th Pacific-Asia convention, PAKDD 2010, held in Hyderabad, India, in June 2010.

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Additional resources for Advances in Knowledge Discovery and Data Mining, Part I: 14th Pacific-Asia Conference, PAKDD 2010, Hyderabat, India, June 21-24, 2010, Proceedings

Example text

In practice we often observe that first few rounds of the batch update scheme quickly improves the objective value. It would therefore be beneficial to begin with several rounds of batch updating, followed by an incremental update phase to further refine the clustering. It should be noted that in an incremental reassignment of v from cluster Ai to cluster Aj , the contributions R(A) = w∈A R(Qw |A| , A) to R for an individual cluster A do not need to be recomputed except for A = Ai and A = Aj . To verify whether the reassignment would increase the value of R, it suffices to perform the test R(Aj ∪ {v}) + R(Ai \ {v}) − R(Aj ) − R(Ai ) > 0.

638–647 (2008) 13. : bigVAT: Visual assessment of cluster tendency for large data sets. Pattern Recognition 38(11), 1875–1886 (2005) 14. : A computer generated aid for cluster analysis. Communications of the ACM 16(6), 355–361 (1973) iVAT and aVAT: Enhanced Visual Analysis 27 15. : A graphical aid to the interpretations and validation of cluster analysis. Journal of Computational and Applied Mathematics 20(1), 53–65 (1987) 16. C. (Automatic) cluster count extraction from unlabeled datasets. In: Joint International Conference on Natural Computation and International Conference on Fuzzy Systems and Knowledge Discovery, vol.

It would therefore be beneficial to begin with several rounds of batch updating, followed by an incremental update phase to further refine the clustering. It should be noted that in an incremental reassignment of v from cluster Ai to cluster Aj , the contributions R(A) = w∈A R(Qw |A| , A) to R for an individual cluster A do not need to be recomputed except for A = Ai and A = Aj . To verify whether the reassignment would increase the value of R, it suffices to perform the test R(Aj ∪ {v}) + R(Ai \ {v}) − R(Aj ) − R(Ai ) > 0.

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