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RSA
2010
94views more  RSA 2010»
13 years 7 months ago
Word maps and spectra of random graph lifts
We study here the spectra of random lifts of graphs. Let G be a finite connected graph, and let the infinite tree T be its universal cover space. If λ1 and ρ are the spectral ...
Nati Linial, Doron Puder
AB
2007
Springer
14 years 1 months ago
Prefix Reversals on Binary and Ternary Strings
Given a permutation , the application of prefix reversal f(i) to reverses the order of the first i elements of . The problem of Sorting By Prefix Reversals (also known as pancake ...
Cor A. J. Hurkens, Leo van Iersel, Judith Keijsper...
ICDE
2003
IEEE
146views Database» more  ICDE 2003»
14 years 10 months ago
Distance Based Indexing for String Proximity Search
In many database applications involving string data, it is common to have near neighbor queries (asking for strings that are similar to a query string) or nearest neighbor queries...
Jai Macker, Murat Tasan, Süleyman Cenk Sahina...
COMPGEOM
2005
ACM
13 years 11 months ago
Inequalities for the curvature of curves and surfaces
In this paper, we bound the difference between the total mean curvatures of two closed surfaces in R3 in terms of their total absolute curvatures and the Fr´echet distance betwee...
David Cohen-Steiner, Herbert Edelsbrunner
FOCS
2009
IEEE
14 years 3 months ago
Distance Oracles for Sparse Graphs
Abstract— Thorup and Zwick, in their seminal work, introduced the approximate distance oracle, which is a data structure that answers distance queries in a graph. For any integer...
Christian Sommer 0002, Elad Verbin, Wei Yu