MOBIHOC
2012
ACM
11 years 7 months ago
2012
ACM
A key feature of wireless communications is the spatial reuse. However, the spatial aspect is not yet well understood for the purpose of designing efficient spectrum sharing mecha...
SIGMETRICS
2011
ACM
12 years 7 months ago
2011
ACM
Source-controlled routing has been proposed as a way to improve flexibility of future network architectures, as well as simplifying the data plane. However, if a packet specifie...
ICALP
2011
Springer
12 years 8 months ago
2011
Springer
Given a directed graph G = (V, E) and an integer k ≥ 1, a Steiner k-transitive-closure-spanner (Steiner k-TC-spanner) of G is a directed graph H = (VH , EH ) such that (1) V ⊆ ...
DASFAA
2011
IEEE
12 years 8 months ago
2011
IEEE
Abstract. Graph-structured databases have numerous recent applications including the Semantic Web, biological databases and XML, among many others. In this paper, we study the main...
TCBB
2011
12 years 11 months ago
2011
Galled trees, directed acyclic graphs that model evolutionary histories with isolated hybridization events, have become very popular due to both their biological significance and ...
IEICET
2011
12 years 11 months ago
2011
In this paper, we study the minimum spanning tree problem for vertex-labeled graphs, where the weights of edges may vary depending on the selection of labels of vertices at both e...
ECCC
2010
13 years 1 months ago
2010
We consider the reachability problem for a certain class of directed acyclic graphs embedded on surfaces. Let G(m, g) be the class of directed acyclic graphs with m = m(n) source ...
ALGORITHMICA
2002
13 years 4 months ago
2002
Given a directed acyclic graph with timing constraints, the budget management problem is to assigntoeachvertexanincrementaldelaysuchthatthesumofthesedelaysismaximizedwithoutviolati...
CORR
2007
Springer
13 years 4 months ago
2007
Springer
We investigate here the computational complexity of three natural problems in directed acyclic graphs. We prove their NP Completeness and consider their restrictions to linear orde...
EACL
1989
ACL Anthology
13 years 5 months ago
1989
ACL Anthology
We propose an apparently minor extension to Kay's (1985} notation for describing directed acyclic graphs (DAGs}. The proposed notation permits concise descriptions of phenome...