Sciweavers

328 search results - page 40 / 66
» An O(log n log log n) space algorithm for undirected st-conn...
Sort
View
SODA
2008
ACM
140views Algorithms» more  SODA 2008»
13 years 9 months ago
Minimizing average latency in oblivious routing
We consider the problem of minimizing average latency cost while obliviously routing traffic in a network with linear latency functions. This is roughly equivalent to minimizing t...
Prahladh Harsha, Thomas P. Hayes, Hariharan Naraya...
ICALP
2009
Springer
14 years 7 months ago
Towards Optimal Range Medians
We consider the following problem: given an unsorted array of n elements, and a sequence of intervals in the array, compute the median in each of the subarrays defined by the inter...
Beat Gfeller, Peter Sanders
ALGORITHMICA
2008
63views more  ALGORITHMICA 2008»
13 years 7 months ago
The Swap Edges of a Multiple-Sources Routing Tree
Let T be a spanning tree of a graph G and S V (G) be a set of sources. The routing cost of T is the total distance from all sources to all vertices. For an edge e of T, the swap ...
Bang Ye Wu, Chih-Yuan Hsiao, Kun-Mao Chao
FSTTCS
2008
Springer
13 years 8 months ago
Pruning 2-Connected Graphs
Given an edge-weighted undirected graph G with a specified set of terminals, let the density of any subgraph be the ratio of its weight/cost to the number of terminals it contain...
Chandra Chekuri, Nitish Korula
ICALP
2011
Springer
12 years 11 months ago
Improved Approximation for the Directed Spanner Problem
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
Piotr Berman, Arnab Bhattacharyya, Konstantin Maka...