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- W79669986 abstract "Previous chapter Next chapter Full AccessProceedings Proceedings of the 2003 SIAM International Conference on Data Mining (SDM)Mixture models and frequent sets: combining global and local methods for 0–1 dataJaakko Hollmén, Jouni K. Seppänen, and Heikki MannilaJaakko Hollmén, Jouni K. Seppänen, and Heikki Mannilapp.289 - 293Chapter DOI:https://doi.org/10.1137/1.9781611972733.32PDFBibTexSections ToolsAdd to favoritesExport CitationTrack CitationsEmail SectionsAboutAbstract We study the interaction between global and local techniques in data mining. Specifically, we study the collections of frequent sets in clusters produced by a probabilistic clustering using mixtures of Bernoulli models. That is, we first analyze 0–1 datasets by a global technique (probabilistic clustering using the EM algorithm) and then do a local analysis (discovery of frequent sets) in each of the clusters. The results indicate that the use of clustering as a preliminary phase in finding frequent sets produces clusters that have significantly different collections of frequent sets. We also test the significance of the differences in the frequent set collections in the different clusters by obtaining estimates of the underlying joint density. To get from the local patterns in each cluster back to distributions, we use the maximum entropy technique [17] to obtain a local model for each cluster, and then combine these local models to get a mixture model. We obtain clear improvements to the approximation quality against the use of either the mixture model or the maximum entropy model. Previous chapter Next chapter RelatedDetails Published:2003ISBN:978-0-89871-545-3eISBN:978-1-61197-273-3 https://doi.org/10.1137/1.9781611972733Book Series Name:ProceedingsBook Code:PR112Book Pages:xiv + 347" @default.
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- W79669986 title "Mixture models and frequent sets: combining global and local methods for 0–1 data" @default.
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