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» Graphs of Bounded Treewidth can be Canonized in AC1
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178
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ECCC
2011
205views ECommerce» more  ECCC 2011»
14 years 5 months ago
Graphs of Bounded Treewidth can be Canonized in AC1
In recent results the complexity of isomorphism testing on graphs of bounded treewidth is improved to TC1 [GV06] and further to LogCFL [DTW10]. The computation of canonical forms ...
Fabian Wagner
94
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STACS
2010
Springer
15 years 5 months ago
Restricted Space Algorithms for Isomorphism on Bounded Treewidth Graphs
The Graph Isomorphism problem restricted to graphs of bounded treewidth or bounded tree distance width are known to be solvable in polynomial time [2],[19]. We give restricted spa...
Bireswar Das, Jacobo Torán, Fabian Wagner
88
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CSR
2008
Springer
15 years 21 days ago
From Invariants to Canonization in Parallel
A function f of a graph is called a complete graph invariant if two given graphs G and H are isomorphic exactly when f(G) = f(H). If additionally, f(G) is a graph isomorphic to G, ...
Johannes Köbler, Oleg Verbitsky
68
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DAM
2007
111views more  DAM 2007»
14 years 11 months ago
Vertex-minor reductions can simulate edge contractions
We prove that local complementation and vertex deletion, operations from which vertexminors are defined, can simulate edge contractions. As an application, we prove that the rank...
Mamadou Moustapha Kanté
96
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UAI
2008
15 years 10 days ago
Complexity of Inference in Graphical Models
It is well-known that inference in graphical models is hard in the worst case, but tractable for models with bounded treewidth. We ask whether treewidth is the only structural cri...
Venkat Chandrasekaran, Nathan Srebro, Prahladh Har...