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INFOCOM
2009
IEEE
14 years 3 months ago
Greedy Routing with Bounded Stretch
—Greedy routing is a novel routing paradigm where messages are always forwarded to the neighbor that is closest to the destination. Our main result is a polynomial-time algorithm...
Roland Flury, Sriram V. Pemmaraju, Roger Wattenhof...
COMPGEOM
2009
ACM
14 years 3 months ago
PTAS for geometric hitting set problems via local search
We consider the problem of computing minimum geometric hitting sets in which, given a set of geometric objects and a set of points, the goal is to compute the smallest subset of p...
Nabil H. Mustafa, Saurabh Ray
FOCS
2007
IEEE
14 years 3 months ago
On the Optimality of Planar and Geometric Approximation Schemes
We show for several planar and geometric problems that the best known approximation schemes are essentially optimal with respect to the dependence on ǫ. For example, we show that...
Dániel Marx
ICDCS
2007
IEEE
14 years 3 months ago
Asymptotic Connectivity in Wireless Networks Using Directional Antennas
Connectivity is a crucial issue in wireless networks. Gupta and Kumar show that with omnidirectional antennas, the critical transmission range for a wireless network to achieve as...
Pan Li, Chi Zhang, Yuguang Fang
ICESS
2007
Springer
14 years 3 months ago
An Efficient Buffer Management Scheme for Implementing a B-Tree on NAND Flash Memory
Recently, NAND flash memory has been used for a storage device in various mobile computing devices such as MP3 players, mobile phones and laptops because of its shock-resistant, lo...
Hyun-Seob Lee, Sangwon Park, Ha-Joo Song, Dong-Ho ...