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COMPGEOM
2009
ACM
15 years 4 months ago
2009
ACM
Data conflation is a major issue in GIS: spatial data obtained from different sources, using different acquisition techniques, needs to be combined into one single consistent d...
COMPGEOM
2009
ACM
15 years 4 months ago
2009
ACM
We consider the following combinatorial problem: given a set of n objects (for example, disks in the plane, triangles), and an integer L ≥ 1, what is the size of the smallest su...
COMPGEOM
2009
ACM
15 years 4 months ago
2009
ACM
We present a data structure for ray shooting-and-insertion in the free space among disjoint polygonal obstacles with a total of n vertices in the plane, where each ray starts at t...
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COMPGEOM
2009
ACM
15 years 4 months ago
2009
ACM
Following recent work of Clarkson, we translate the coreset framework to the problems of finding the point closest to the origin inside a polytope, finding the shortest distance...
COMPGEOM
2009
ACM
15 years 4 months ago
2009
ACM
We consider a number of range reporting problems in two and three dimensions and prove lower bounds on the amount of space used by any cache-oblivious data structure for these pro...