301 search results - page 4 / 61 » The k-Median Problem for Directed Trees |
ISITA
2010
13 years 5 months ago
2010
Abstract--Chow and Liu considered the problem of approximating discrete joint distributions with dependence tree distributions where the goodness of the approximations were measure...
FOCS
1999
IEEE
13 years 11 months ago
1999
IEEE
We consider the DIRECTED STEINER NETWORK problem, also called the POINT-TO-POINT CONNECTION problem, where given a directed graph G and p pairs {(s1,t1),...,(sp,tp)} of nodes in t...
JCSS
2010
13 years 5 months ago
2010
A subgraph T of a digraph D is an out-branching if T is an oriented spanning tree with only one vertex of in-degree zero (called the root). The vertices of T of out-degree zero ar...
TCS
2008
13 years 7 months ago
2008
Transitive signatures allow a signer to authenticate edges in a graph in such a way that anyone, given the public key and two signatures on adjacent edges (i, j) and (j, k), can c...
FSTTCS
2007
Springer
14 years 1 months ago
2007
Springer
The Directed Maximum Leaf Out-Branching problem is to find an out-branching (i.e. a rooted oriented spanning tree) in a given digraph with the maximum number of leaves. In this pa...