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IPL
2010
71views more  IPL 2010»
14 years 8 months ago
New common ancestor problems in trees and directed acyclic graphs
We derive a new generalization of lowest common ancestors (LCAs) in dags, called the lowest single common ancestor (LSCA). We show how to preprocess a static dag in linear time su...
Johannes Fischer, Daniel H. Huson
WADS
2001
Springer
124views Algorithms» more  WADS 2001»
15 years 2 months ago
Deciding Clique-Width for Graphs of Bounded Tree-Width
We show that there exists a linear time algorithm for deciding whether a graph of bounded tree-width has clique-width k for some fixed integer k. Communicated by Giuseppe Liotta ...
Wolfgang Espelage, Frank Gurski, Egon Wanke
ICFP
2008
ACM
15 years 9 months ago
Efficient nondestructive equality checking for trees and graphs
The Revised6 Report on Scheme requires its generic equivalence predicate, equal?, to terminate even on cyclic inputs. While the terminating equal? can be implemented via a DFA-equ...
Michael D. Adams, R. Kent Dybvig
PODS
2002
ACM
130views Database» more  PODS 2002»
15 years 10 months ago
Algorithmics and Applications of Tree and Graph Searching
Dennis Shasha, Jason Tsong-Li Wang, Rosalba Giugno