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• W2031293887 abstract "Clustering is a popular data analysis and data mining technique. However, applying traditional clustering algorithms directly to a database is not straightforward due to the fact that a database usually consists of structured and related data; moreover, there might be several object views of the database to be clustered, depending on a data analyst's particular interest. Finally, in many cases, there is a data model discrepancy between the format used to store the database to be analyzed and the representation format that clustering algorithms expect as their input. These discrepancies have been mostly ignored by current research. This paper focuses on identifying those discrepancies and on analyzing their impact on the application of clustering techniques to databases. We are particularly interested in the question on how clustering algorithms can be generalized to become more directly applicable to real-world databases. The paper introduces methodologies, techniques, and tools that serve this purpose. We propose a data set representation framework for database clustering that characterizes objects to be clustered through sets of tuples, and introduce preprocessing techniques and tools to generate object views based on this framework. Moreover, we introduce bag-oriented similarity measures and clustering algorithms that are suitable for our proposed data set representation framework. We also demonstrate that our approach is capable of dealing with relationship information commonly found in databases through the bag-oriented clustering. We also argue that our bag-oriented data representation framework is more suitable for database clustering than the commonly used flat file format and produce better quality of clusters." @default.
• W2031293887 created "2016-06-24" @default.
• W2031293887 creator A5019887282 @default.
• W2031293887 creator A5056584154 @default.
• W2031293887 date "2005-03-04" @default.
• W2031293887 modified "2023-09-26" @default.
• W2031293887 title "A database clustering methodology and tool" @default.
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• W2031293887 doi "https://doi.org/10.1016/j.ins.2004.03.016" @default.
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