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» Predicates for line transversals to lines and line segments ...
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COMPGEOM
2008
ACM
14 years 20 days ago
Predicates for line transversals to lines and line segments in three-dimensional space
When an observer is in a 3D scene, a topological change in the view arises when the line of sight is tangent to four objects. If we consider polyhedral scenes, the relevant lines ...
Olivier Devillers, Marc Glisse, Sylvain Lazard
CCCG
2006
14 years 8 days ago
Predicates for Line Transversals in 3D
In this paper we study various predicates concerning line transversals to lines and segments in 3D. We compute the degrees of standard methods of evaluating these predicates. The ...
Hazel Everett, Sylvain Lazard, William J. Lenhart,...
KDD
1997
ACM
161views Data Mining» more  KDD 1997»
14 years 3 months ago
Automated Discovery of Active Motifs in Three Dimensional Molecules
In this paper 1 we present a method for discovering approximately common motifs (also known as active motifs) in three dimensional (3D) molecules. Each node in a molecule is repre...
Xiong Wang, Jason Tsong-Li Wang, Dennis Shasha, Br...