13 search results - page 1 / 3 » Planar graphs, negative weight edges, shortest paths, and ne... |
JCSS
2006
13 years 7 months ago
2006
SIAMCOMP
1998
13 years 7 months ago
1998
This paper introduces a near-linear time sequential algorithm for constructing a sparse neighborhood cover. This implies analogous improvements (from quadratic to near-linear time)...
COMGEO
2006
ACM
13 years 7 months ago
2006
ACM
Geometric shortest paths are a major topic in computational geometry; see the survey paper by Mitchell [12]. A shortest path between two points in a simple polygon can be found in...
STOC
2009
ACM
14 years 8 months ago
2009
ACM
We present an improved oracle for the distance sensitivity problem. The goal is to preprocess a directed graph G = (V, E) with non-negative edge weights to answer queries of the f...
SODA
1998
ACM
13 years 8 months ago
1998
ACM
Given a planar graph on n nodes with costs weights on its edges, de ne the distance between nodes i and j as the length of the shortest path between i and j. Consider this as an i...