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As a famous member of R-tree family, R^*-tree is widely used in multimedia databases and spatial databases, in which NN (Nearest Neighbor) search is very popular. Based on the observation that the obj...ects are not well-clustered in R^*-tree leaf nodes, this paper proposes an approach to improve NN search performance of R^*-tree by introducing clustering technology to R^*-tree. The experimental result indicates that our improved R^*-tree has much better NN search performance than the original R^*-tree.show more
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