Sciweavers

COMPGEOM
2005
ACM
14 years 1 months ago
The skip quadtree: a simple dynamic data structure for multidimensional data
We present a new multi-dimensional data structure, which we call the skip quadtree (for point data in R2) or the skip octree (for point data in Rd, with constant d > 2). Our da...
David Eppstein, Michael T. Goodrich, Jonathan Z. S...
COMPGEOM
2005
ACM
14 years 1 months ago
Incidences of not-too-degenerate hyperplanes
We present a multi-dimensional generalization of the Szemer´edi-Trotter Theorem, and give a sharp bound on the number of incidences of points and not-too-degenerate hyperplanes i...
György Elekes, Csaba D. Tóth
COMPGEOM
2005
ACM
14 years 1 months ago
Energy-aware stage illumination
Friedrich Eisenbrand, Stefan Funke, Andreas Karren...
COMPGEOM
2005
ACM
14 years 1 months ago
1-link shortest paths in weighted regions
We illustrate the Link Solver software for computing 1-link shortest paths in weighted regions. The Link Solver implements a prune-and-search method that can be used to approximat...
Ovidiu Daescu, James D. Palmer
COMPGEOM
2005
ACM
14 years 1 months ago
Stability of persistence diagrams
The persistence diagram of a real-valued function on a topological space is a multiset of points in the extended plane. We prove that under mild assumptions on the function, the p...
David Cohen-Steiner, Herbert Edelsbrunner, John Ha...
COMPGEOM
2005
ACM
14 years 1 months ago
Inequalities for the curvature of curves and surfaces
In this paper, we bound the difference between the total mean curvatures of two closed surfaces in R3 in terms of their total absolute curvatures and the Fr´echet distance betwee...
David Cohen-Steiner, Herbert Edelsbrunner
COMPGEOM
2005
ACM
14 years 1 months ago
Hadwiger and Helly-type theorems for disjoint unit spheres in R3
Let S be an ordered set of disjoint unit spheres in R3 . We show that if every subset of at most six spheres from S admits a line transversal respecting the ordering, then the ent...
Otfried Cheong, Xavier Goaoc, Andreas Holmsen
COMPGEOM
2005
ACM
14 years 1 months ago
Provable dimension detection using principal component analysis
Siu-Wing Cheng, Yajun Wang, Zhuangzhi Wu
COMPGEOM
2005
ACM
14 years 1 months ago
Shortest path amidst disc obstacles is computable
An open question in Exact Geometric Computation is whether there are transcendental computations that can be made “geometrically exact”. Perhaps the simplest such problem in c...
Ee-Chien Chang, Sung Woo Choi, DoYong Kwon, Hyungj...
COMPGEOM
2005
ACM
14 years 1 months ago
Multi-pass geometric algorithms
We initiate the study of exact geometric algorithms that require limited storage and make only a small number of passes over the input. Fundamental problems such as lowdimensional...
Timothy M. Chan, Eric Y. Chen