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- W1569200533 abstract "Clustering in very large databases or data warehouses, with many applications in areas such as spatial computation, web information collection, pattern recognition and economic analysis, is a huge task that challenges data mining researches. Current clustering methods always have the problems: 1) scanning the whole database leads to high I/O cost and expensive maintenance (e.g., R*-tree); 2) pre-specifying the uncertain parameter k, with which clustering can only be refined by trial and test many times; 3) lacking high efficiency in treating arbitrary shape under very large data set environment. In this paper, we first present a new hybrid-clustering algorithm to solve these problems. This new algorithm, which combines both distance and density strategies,can handle any arbitrary shape clusters effectively. It makes full use of statistics information in mining to reduce the time complexity greatly while keeping good clustering quality. Furthermore,this algorithm can easily eliminate noises and identify outliers. An experimental evaluation is performed on a spatial database with this method and other popular clustering algorithms (CURE and DBSCAN). The results show that our algorithm outperforms them in terms of efficiency and cost, and even gets much more speedup as the data size scales up much larger." @default.
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- W1569200533 date "2003-01-01" @default.
- W1569200533 modified "2023-09-24" @default.
- W1569200533 title "Clustering in Very Large Databases Based on Distance and Density" @default.
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