Abstract
In this paper we present a compact structure to index semi-static collections of MBRs that solves range queries while keeping a good trade-off between the space needed to store the index and its search efficiency. This is very relevant considering the current sizes and gaps in the memory hierarchy. Our index is based on the wavelet tree, a structure used to represent sequences, permutations, and other discrete functions in stringology. The comparison with the R*-tree and the STR R-tree (the most relevant dynamic and static versions of the R-tree) shows that our proposal needs less space to store the index while keeping competitive search performance, especially when the queries are not too selective.
This work has been partially supported by “Ministerio de Educación y Ciencia” (PGE y FEDER) ref. TIN2009-14560-C03-02, by “Xunta de Galicia” ref. 08SIN009CT, and by Fondecyt Grant 1-080019, Chile.
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Brisaboa, N.R., Luaces, M.R., Navarro, G., Seco, D. (2010). Range Queries over a Compact Representation of Minimum Bounding Rectangles. In: Trujillo, J., et al. Advances in Conceptual Modeling – Applications and Challenges. ER 2010. Lecture Notes in Computer Science, vol 6413. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-16385-2_5
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