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SODA
2010
ACM
231views Algorithms» more  SODA 2010»
14 years 2 months ago
Asymmetric Traveling Salesman Path and Directed Latency Problems
We study integrality gaps and approximability of two closely related problems on directed graphs. Given a set V of n nodes in an underlying asymmetric metric and two specified nod...
Zachary Friggstad, Mohammad R. Salavatipour, Zoya ...
SODA
2008
ACM
156views Algorithms» more  SODA 2008»
13 years 6 months ago
Approximating TSP on metrics with bounded global growth
The Traveling Salesman Problem (TSP) is a canonical NP-complete problem which is known to be MAXSNP hard even on Euclidean metrics (of high dimensions) [40]. In order to circumven...
T.-H. Hubert Chan, Anupam Gupta
CATS
2007
13 years 6 months ago
Constructing Optimal Highways
For two points p and q in the plane, a straight line h, called a highway, and a real v > 1, we define the travel time (also known as the city distance) from p and q to be the ...
Hee-Kap Ahn, Helmut Alt, Tetsuo Asano, Sang Won Ba...
GIS
2008
ACM
13 years 6 months ago
Heuristic algorithms for route-search queries over geographical data
In a geographical route search, given search terms, the goal is to find an effective route that (1) starts at a given location, (2) ends at a given location, and (3) travels via...
Yaron Kanza, Eliyahu Safra, Yehoshua Sagiv, Yerach...