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 ⊆ ...
JCT
2011
13 years 4 hour ago
2011
Abstract. We generalize a theorem of Knuth relating the oriented spanning trees of a directed graph G and its directed line graph LG. The sandpile group is an abelian group associa...
PROPERTYTESTING
2010
13 years 2 months ago
2010
We survey results on transitive-closure spanners and their applications. Given a directed graph G = (V, E) and an integer k 1, a k-transitive-closure-spanner (k-TC-spanner) of G ...
IMCSIT
2010
13 years 3 months ago
2010
We will consider balanced directed graphs, i.e., graphs of binary relations, for which the number of inputs and number of outputs are the same for each vertex. The commutative diag...
MP
1998
13 years 4 months ago
1998
Consider a directed graph G = (V;A), and a set of tra c demands to be shipped between pairs of nodes in V. Capacity has to be installed on the edges of this graph (in integer mult...
COMGEO
1999
ACM
13 years 4 months ago
1999
ACM
Let S be a set of n points in IRd and let t > 1 be a real number. A t-spanner for S is a directed graph having the points of S as its vertices, such that for any pair p and q o...
CN
1999
13 years 4 months ago
1999
From a user's perspective, hypertext links on the web form a directed graph between distinct information sources. We investigate the effects of discovering "backlinks&qu...
JALC
2002
13 years 4 months ago
2002
We define general algebraic frameworks for shortest-distance problems based on the structure of semirings. We give a generic algorithm for finding single-source shortest distances...
IPL
2002
13 years 4 months ago
2002
Inspired by recent algorithms for electing a leader in a distributed system, we study the following game in a directed graph: each vertex selects one of its outgoing arcs (if any)...
DSS
2002
13 years 4 months ago
2002
A thorough understanding of the way in which existing business processes currently practice is essential from the perspectives of both process reengineering and workflow managemen...