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» Testing the Expansion of a Graph
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AAAI
1994
14 years 11 months ago
Tractable Planning with State Variables by Exploiting Structural Restrictions
So far, tractable planning problems reported in the literature have been defined by syntactical restrictions. To better exploit the inherent structure in problems, however, it is ...
Peter Jonsson, Christer Bäckström
SAC
2010
ACM
15 years 4 months ago
Spanders: distributed spanning expanders
We consider self-stabilizing and self-organizing distributed construction of a spanner that forms an expander. The following results are presented. • A randomized technique to r...
Shlomi Dolev, Nir Tzachar
FOCS
2006
IEEE
15 years 3 months ago
Better lossless condensers through derandomized curve samplers
Lossless condensers are unbalanced expander graphs, with expansion close to optimal. Equivalently, they may be viewed as functions that use a short random seed to map a source on ...
Amnon Ta-Shma, Christopher Umans
FOCS
2003
IEEE
15 years 3 months ago
Quantum Search of Spatial Regions
: Can Grover’s algorithm speed up search of a physical region—for example a 2-D grid of size √ n × √ n? The problem is that √ n time seems to be needed for each query, j...
Scott Aaronson, Andris Ambainis
ICS
1989
Tsinghua U.
15 years 1 months ago
Control flow optimization for supercomputer scalar processing
Control intensive scalar programs pose a very different challenge to highly pipelined supercomputers than vectorizable numeric applications. Function call/return and branch instru...
Pohua P. Chang, Wen-mei W. Hwu