126 search results - page 17 / 26 » Lower Bounds for Set Intersection Queries |
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VLDB
2007
ACM
15 years 9 months ago
2007
ACM
Existing work on similar sequence matching has focused on either whole matching or range subsequence matching. In this paper, we present novel methods for ranked subsequence match...
WADS
2005
Springer
15 years 3 months ago
2005
Springer
Spatial databases support a variety of geometric queries on point data such as range searches, nearest neighbor searches, etc. Balanced Aspect Ratio (BAR) trees are hierarchical sp...
FOCS
2009
IEEE
15 years 4 months ago
2009
IEEE
We prove the existence of an algorithm A for computing 2-d or 3-d convex hulls that is optimal for every point set in the following sense: for every set S of n points and for ever...
STOC
2001
ACM
15 years 10 months ago
2001
ACM
We study two fundamental static data structure problems, membership and perfect hashing, in Yao's cell probe model. The first space and bit probe optimal worst case upper bou...
COMPGEOM
2004
ACM
15 years 3 months ago
2004
ACM
We prove that the lines tangent to four possibly intersecting convex polyhedra in 3 with n edges in total form Θ(n2 ) connected components in the worst case. In the generic ca...