146 search results - page 17 / 30 » An Algorithm for Enumerating All Spanning Trees of a Directe... |
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...
GC
2008
Springer
13 years 7 months ago
2008
Springer
In this paper we study the class of weakly quasi-threshold graphs that are obtained from a vertex by recursively applying the operations (i) adding a new isolated vertex, (ii) addi...
WADS
2007
Springer
14 years 1 months ago
2007
Springer
We introduce a family of directed geometric graphs, denoted Gθ λ, that depend on two parameters λ and θ. For 0 ≤ θ < π 2 and 1 2 < λ < 1, the Gθ λ graph is a s...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
Reachability queries on large directed graphs have attracted much attention recently. The existing work either uses spanning structures, such as chains or trees, to compress the c...
COCOON
2003
Springer
14 years 19 days ago
2003
Springer
Drugs and other chemical compounds are often modeled as polygonal shapes, where each vertex represents an atom of the molecule, and covalent bonds between atoms are represented by...