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ICALP

2011

Springer

9 years 3 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

9 years 6 months 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

9 years 9 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

9 years 9 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

9 years 11 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

9 years 11 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

9 years 11 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

9 years 11 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

9 years 11 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

9 years 11 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...