36 search results - page 4 / 8 » Improved Approximation Algorithms for the Spanning Star Fore... |
AINA
2007
IEEE
14 years 1 months ago
2007
IEEE
The construction of multicast trees is complicated by the need to balance a number of important objectives, including: minimizing latencies, minimizing depth/hops, and bounding th...
STOC
2010
ACM
14 years 12 days ago
2010
ACM
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
FOCS
2006
IEEE
14 years 1 months ago
2006
IEEE
We extend the binary search technique to searching in trees. We consider two models of queries: questions about vertices and questions about edges. We present a general approach t...
APPROX
2000
Springer
13 years 12 months ago
2000
Springer
Given a graph (directed or undirected) with costs on the edges, and an integer k, we consider the problem of nding a k-node connected spanning subgraph of minimum cost. For the ge...
FOCS
2006
IEEE
14 years 1 months ago
2006
IEEE
Given an n-element set U and a family of subsets S ⊆ 2U we show how to count the number of k-partitions S1 ∪ · · · ∪ Sk = U into subsets Si ∈ S in time 2nnO(1). The only...