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NETWORKS
2010
13 years 7 months ago
Complexity of some inverse shortest path lengths problems
The input to an Inverse Shortest Path Lengths Problem (ISPL) consists of a graph G with arc weights, and a collection of source-sink pairs with prescribed distances that do not ne...
Tingting Cui, Dorit S. Hochbaum
SWAT
2004
Springer
146views Algorithms» more  SWAT 2004»
14 years 2 months ago
Cache-Oblivious Data Structures and Algorithms for Undirected Breadth-First Search and Shortest Paths
We present improved cache-oblivious data structures and algorithms for breadth-first search and the single-source shortest path problem on undirected graphs with non-negative edge...
Gerth Stølting Brodal, Rolf Fagerberg, Ulri...
CORR
2010
Springer
180views Education» more  CORR 2010»
13 years 6 months ago
Shortest path problem in rectangular complexes of global nonpositive curvature
Abstract. CAT(0) metric spaces constitute a far-reaching common generalization of Euclidean and hyperbolic spaces and simple polygons: any two points x and y of a CAT(0) metric spa...
Victor Chepoi, Daniela Maftuleac
CCCG
2010
13 years 10 months ago
Approximate shortest path algorithms for sequences of pairwise disjoint simple polygons
Assume that two points p and q are given and a finite ordered set of simple polygons, all in the same plane; the basic version of a touring-a-sequence-of-polygons problem (TPP) is...
Xiuxia Pan, Fajie Li, Reinhard Klette
CORR
2008
Springer
133views Education» more  CORR 2008»
13 years 8 months ago
Approximation Algorithms for Shortest Descending Paths in Terrains
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
Mustaq Ahmed, Sandip Das, Sachin Lodha, Anna Lubiw...