102 search results - page 2 / 21 » Better Algorithms and Bounds for Directed Maximum Leaf Probl... |
JGAA
2007
13 years 4 months ago
2007
The task of finding the largest subset of vertices of a graph that induces a planar subgraph is known as the Maximum Induced Planar Subgraph problem (MIPS). In this paper, some n...
ALGORITHMICA
2005
13 years 4 months ago
2005
A cycle cover of a graph is a spanning subgraph each node of which is part of exactly one simple cycle. A k-cycle cover is a cycle cover where each cycle has length at least k. Gi...
FOCS
2008
IEEE
13 years 11 months ago
2008
IEEE
We prove that approximating the Max Acyclic Subgraph problem within a factor better than 1/2 is Unique-Games hard. Specifically, for every constant ε > 0 the following holds:...
ESA
2008
Springer
13 years 6 months ago
2008
Springer
The edge asymmetry of a directed, edge-weighted graph is defined as the maximum ratio of the weight of antiparallel edges in the graph, and can be used as a measure of the heterog...
CIAC
2010
Springer
13 years 8 months ago
2010
Springer
A flow on a directed network is said to be confluent if the flow uses at most one outgoing arc at each node. Confluent flows arise naturally from destination-based routing. We stud...