370 search results - page 52 / 74 » Improved Approximation Algorithms for Connected Sensor Cover |
ICDCN
2009
Springer
15 years 2 months ago
2009
Springer
Wireless sensor networks with multiple users collecting data directly from the sensors have many potential applications. An important problem is to allocate for each user a query r...
APPROX
2010
Springer
14 years 11 months ago
2010
Springer
In this paper, we consider the checkpoint problem in which given an undirected graph G, a set of sourcedestinations {(s1, t1), (s1, t1), . . . , (sk, tk)} and a set of fixed paths...
FOCS
2007
IEEE
15 years 4 months ago
2007
IEEE
We continue the recent line of work on the connection between semidefinite programming-based approximation algorithms and the Unique Games Conjecture. Given any boolean 2-CSP (or...
ICALP
2009
Springer
15 years 10 months ago
2009
Springer
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
FOCS
1996
IEEE
15 years 1 months ago
1996
IEEE
In the minimum path coloring problem, we are given a list of pairs of vertices of a graph. We are asked to connect each pair by a colored path. Paths of the same color must be edg...