Sciweavers

249 search results - page 2 / 50
» A factor 1 2 approximation algorithm for two-stage stochasti...
Sort
View
SODA
2012
ACM
297views Algorithms» more  SODA 2012»
11 years 7 months ago
Constant factor approximation algorithm for the knapsack median problem
We give a constant factor approximation algorithm for the following generalization of the k-median problem. We are given a set of clients and facilities in a metric space. Each fa...
Amit Kumar
IPL
2006
151views more  IPL 2006»
13 years 5 months ago
Approximating weighted matchings in parallel
We present an NC approximation algorithm for the weighted matching problem in graphs with an approximation ratio of (1 - ). This improves the previously best approximation ratio of...
Stefan Hougardy, Doratha E. Drake Vinkemeier
CORR
2010
Springer
94views Education» more  CORR 2010»
13 years 3 months ago
When LP is the Cure for Your Matching Woes: Improved Bounds for Stochastic Matchings
Abstract Consider a random graph model where each possible edge e is present independently with some probability pe. Given these probabilities, we want to build a large/heavy match...
Nikhil Bansal, Anupam Gupta, Jian Li, Juliá...
ICALP
2005
Springer
13 years 10 months ago
Approximation Algorithms for the Max-coloring Problem
Given a graph G = (V, E) and positive integral vertex weights w : V → N, the max-coloring problem seeks to find a proper vertex coloring of G whose color classes C1, C2, . . . ,...
Sriram V. Pemmaraju, Rajiv Raman
CPM
2009
Springer
94views Combinatorics» more  CPM 2009»
13 years 12 months ago
Online Approximate Matching with Non-local Distances
Abstract. A black box method was recently given that solves the problem of online approximate matching for a class of problems whose distance functions can be classified as being ...
Raphaël Clifford, Benjamin Sach