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COMAD
2009
13 years 10 months ago
Epsilon Equitable Partition: A positional analysis method for large social networks
Positional analysis is considered an important tool in the analysis of social networks. It involves partitioning of the set of actors into subsets such that actors in a subset are...
Kiran Kate, Balaraman Ravindran
MFCS
2009
Springer
14 years 3 months ago
FO Model Checking on Nested Pushdown Trees
Nested Pushdown Trees are unfoldings of pushdown graphs with an additional jump-relation. These graphs are closely related to collapsible pushdown graphs. They enjoy decidable µ-c...
Alexander Kartzow
APPROX
2010
Springer
220views Algorithms» more  APPROX 2010»
13 years 11 months ago
Constant Approximation Algorithms for Embedding Graph Metrics into Trees and Outerplanar Graphs
We present a simple factor 6 algorithm for approximating the optimal multiplicative distortion of embedding (unweighted) graph metrics into tree metrics (thus improving and simplif...
Victor Chepoi, Feodor F. Dragan, Ilan Newman, Yuri...
ISAAC
2005
Springer
111views Algorithms» more  ISAAC 2005»
14 years 2 months ago
Boosting Spectral Partitioning by Sampling and Iteration
A partition of a set of n items is a grouping of the items into k disjoint classes of equal size. Any partition can be modeled as a graph: the items become the vertices of the grap...
Joachim Giesen, Dieter Mitsche
ACTA
2008
88views more  ACTA 2008»
13 years 8 months ago
Weighted height of random trees
We consider a model of random trees similar to the split trees of Devroye [30] in which a set of items is recursively partitioned. Our model allows for more flexibility in the cho...
Nicolas Broutin, Luc Devroye, Erin McLeish