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» On the Hardness of Graph Isomorphism
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COMBINATORICS
1999
82views more  COMBINATORICS 1999»
14 years 11 months ago
On Highly Closed Cellular Algebras and Highly Closed Isomorphisms
We define and study m-closed cellular algebras (coherent configurations) and m-isomorphisms of cellular algebras which can be regarded as mth approximations of Schurian algebras (...
Sergei Evdokimov, Ilia N. Ponomarenko
AI
2010
Springer
14 years 12 months ago
AllDifferent-based filtering for subgraph isomorphism
The subgraph isomorphism problem involves deciding if there exists a copy of a pattern graph in a target graph. This problem may be solved by a complete tree search combined with ...
Christine Solnon
IPCO
2001
117views Optimization» more  IPCO 2001»
15 years 1 months ago
Pruning by Isomorphism in Branch-and-Cut
The paper presents a branch-and-cut for solving (0, 1) integer linear programs having a large symmetry group. The group is used for pruning the enumeration tree and for generating ...
François Margot
IPL
2010
115views more  IPL 2010»
14 years 10 months ago
Hardness and approximation of minimum distortion embeddings
We show that the problem of computing a minimum distortion embedding of a given graph into a path remains NP-hard when the input graph is restricted to a bipartite, cobipartite, o...
Pinar Heggernes, Daniel Meister
176
Voted
ICDE
2006
IEEE
196views Database» more  ICDE 2006»
16 years 1 months ago
Closure-Tree: An Index Structure for Graph Queries
Graphs have become popular for modeling structured data. As a result, graph queries are becoming common and graph indexing has come to play an essential role in query processing. ...
Huahai He, Ambuj K. Singh