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FOCS
2004
IEEE
14 years 2 months ago
Edge-Disjoint Paths in Planar Graphs
We study the maximum edge-disjoint paths problem in undirected planar graphs: given a graph G and node pairs (demands) s1t1, s2t2, . . ., sktk, the goal is to maximize the number ...
Chandra Chekuri, Sanjeev Khanna, F. Bruce Shepherd
WSC
2007
14 years 20 days ago
Alternative thread scoring methods in qualitative event graphs
Event Graphs (EGs) and Simulation Graph Models provide a powerful and general modeling framework for discrete event simulation. Qualitative Event Graphs (QEGs) extend the EG frame...
Ricki G. Ingalls, Douglas J. Morrice
SODA
2007
ACM
131views Algorithms» more  SODA 2007»
13 years 11 months ago
On the K-simple shortest paths problem in weighted directed graphs
We obtain the first approximation algorithm for finding the k-simple shortest paths connecting a pair of vertices in a weighted directed graph. Our algorithm is deterministic an...
Liam Roditty
IJCAI
2003
13 years 11 months ago
On a generalization of triangulated graphs for domains decomposition of CSPs
In [Jegou, 1993], a decomposition method has been introduced for improving search efficiency in the area of Constraint Satisfaction Problems. This method is based on properties of...
Assef Chmeiss, Philippe Jégou, Lamia Keddar
JDA
2008
94views more  JDA 2008»
13 years 10 months ago
Approximability of partitioning graphs with supply and demand
Suppose that each vertex of a graph G is either a supply vertex or a demand vertex and is assigned a positive real number, called the supply or the demand. Each demand vertex can ...
Takehiro Ito, Erik D. Demaine, Xiao Zhou, Takao Ni...