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Hilbert R-tree: An Improved R-tree Using Fkactals
Ibrahim Kamel Christos Faloutsos *
Department of Computer Science Department of Computer Science and
University of Maryland Institute for Systems Research (ISR)
College Park, MD 20742 University of Maryland
kamelQcs.umd.edu College Park, MD 20742
christos@cs.umd.edu
Hilbert R-tree. Our experiments show that
the ‘2-to-3’ split policy provides a cornpro
Abstract mise betweenthe insertion complexity and the
searchcost, giving up to 28% savings over the
We propose a new Rtree structure that out- R’ - tree [BKSSOO]on real data.
performs all the older ones. The heart of the
idea is to facilitate the deferred splitting ap
preach in R-trees. This is done by propos- 1 Introduction
ing an ordering on the R-tree nodes. This
One of the requirements for the database management
ordering has to be ‘good’, in the sense that
systems (DBMSs) of the near future
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