Sciweavers

534 search results - page 12 / 107
» Tight approximation algorithm for connectivity augmentation ...
Sort
View
ALGORITHMICA
2005
99views more  ALGORITHMICA 2005»
13 years 8 months ago
Improved Approximation Algorithms for the Quality of Service Multicast Tree Problem
Abstract. The Quality of Service Multicast Tree Problem is a generalization of the Steiner tree problem which appears in the context of multimedia multicast and network design. In ...
Marek Karpinski, Ion I. Mandoiu, Alexander Olshevs...
AAIM
2006
Springer
222views Algorithms» more  AAIM 2006»
14 years 2 months ago
Connected Set Cover Problem and Its Applications
Abstract. We study an extension of the set cover problem, the connected set cover problem, the problem is to find a set cover of minimal size that satisfies some connectivity con...
Tianping Shuai, Xiao-Dong Hu
COCOA
2008
Springer
13 years 10 months ago
Polynomial Time Approximation Scheme for Connected Vertex Cover in Unit Disk Graph
Connected Vertex Cover Problem (CVC) is an NP-hard problem. The currently best known approximation algorithm for CVC has performance ration 2. This paper gives the first Polynomial...
Zhao Zhang, Xiaofeng Gao, Weili Wu
FOCS
2009
IEEE
14 years 3 months ago
Approximability of Combinatorial Problems with Multi-agent Submodular Cost Functions
Abstract— Applications in complex systems such as the Internet have spawned recent interest in studying situations involving multiple agents with their individual cost or utility...
Gagan Goel, Chinmay Karande, Pushkar Tripathi, Lei...
COCOON
2007
Springer
14 years 2 months ago
Priority Algorithms for the Subset-Sum Problem
Greedy algorithms are simple, but their relative power is not well understood. The priority framework [5] captures a key notion of “greediness” in the sense that it processes (...
Yuli Ye, Allan Borodin