An O(N1.5+ε) expected time algorithm for canonization and isomorphism testing of trivalent graphs

Author(s):  
Luděk Kučera
1987 ◽  
Vol 25 (2) ◽  
pp. 77-86 ◽  
Author(s):  
Jyrki Katajainen ◽  
Olli Nevalainen ◽  
Jukka Teuhola
Keyword(s):  

1986 ◽  
Vol 34 (2) ◽  
pp. 223-231 ◽  
Author(s):  
Pierre Hansen ◽  
Brigitte Jaumard ◽  
Michel Minoux
Keyword(s):  

2010 ◽  
Vol 02 (04) ◽  
pp. 553-565
Author(s):  
JOHN AUGUSTINE ◽  
DAVID EPPSTEIN ◽  
KEVIN A. WORTMAN

We provide an efficient reduction from the problem of querying approximate multiplicatively weighted farthest neighbors in a metric space to the unweighted problem. Combining our techniques with core-sets for approximate unweighted farthest neighbors, we show how to find approximate farthest neighbors that are farther than a factor (1 - ∊) of optimal in time O( log n) per query in D-dimensional Euclidean space for any constants D and ∊. As an application, we find an O(n log n) expected time algorithm for choosing the center of a star topology network connecting a given set of points, so as to approximately minimize the maximum dilation between any pair of points.


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