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» Rounding algorithms for covering problems
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SIAMCOMP
2008
167views more  SIAMCOMP 2008»
14 years 9 months ago
Approximation Algorithms for Data Placement Problems
We develop approximation algorithms for the problem of placing replicated data in arbitrary networks, where the nodes may both issue requests for data objects and have capacity fo...
Ivan D. Baev, Rajmohan Rajaraman, Chaitanya Swamy
CCCG
2007
14 years 11 months ago
Covering Points by Isothetic Unit Squares
Given a set P of n points in R2 , we consider two related problems. Firstly, we study the problem of computing two isothetic unit squares which may be either disjoint or intersect...
Priya Ranjan Sinha Mahapatra, Partha P. Goswami, S...
CORR
2010
Springer
104views Education» more  CORR 2010»
14 years 9 months ago
Approximating the minimum directed tree cover
Given a directed graph G with non negative cost on the arcs, a directed tree cover of G is a directed tree such that either head or tail (or both of them) of every arc in G is touc...
Viet Hung Nguyen
TCC
2007
Springer
100views Cryptology» more  TCC 2007»
15 years 3 months ago
Private Approximation of Clustering and Vertex Cover
Private approximation of search problems deals with finding approximate solutions to search problems while disclosing as little information as possible. The focus of this work is ...
Amos Beimel, Renen Hallak, Kobbi Nissim
ICCNMC
2005
Springer
15 years 3 months ago
Minimum Disc Cover Set Construction in Mobile Ad Hoc Networks
— The minimum disc cover set can be used to construct the dominating set on the fly for energy-efficient communications in mobile ad hoc networks. The approach used to compute ...
Min-Te Sun, Xiaoli Ma, Chih-Wei Yi, Chuan-Kai Yang...