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CORR
2010
Springer
178views Education» more  CORR 2010»
14 years 8 months ago
Enumerative Algorithms for the Shortest and Closest Lattice Vector Problems in Any Norm via M-Ellipsoid Coverings
We give an algorithm for solving the exact Shortest Vector Problem in n-dimensional lattices, in any norm, in deterministic 2O(n) time (and space), given poly(n)-sized advice that...
Daniel Dadush, Chris Peikert, Santosh Vempala
CIE
2005
Springer
15 years 3 months ago
Schnorr Dimension
Following Lutz’s approach to effective (constructive) dimension, we define a notion of dimension for individual sequences based on Schnorr’s concept(s) of randomness. In contr...
Rodney G. Downey, Wolfgang Merkle, Jan Reimann
74
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IJBC
2007
80views more  IJBC 2007»
14 years 9 months ago
Exact Approximations of omega Numbers
A Chaitin Omega number is the halting probability of a universal prefix-free Turing machine. Every Omega number is simultaneously computably enumerable (the limit of a computable...
Cristian S. Calude, Michael J. Dinneen
ECOOP
2007
Springer
15 years 1 months ago
Efficiently Generating Structurally Complex Inputs with Thousands of Objects
Abstract. We present Shekoosh, a novel framework for constraint-based generation of structurally complex inputs of large sizes. Given a Java predicate that represents the desired s...
Bassem Elkarablieh, Yehia Zayour, Sarfraz Khurshid
83
Voted
PVLDB
2008
100views more  PVLDB 2008»
14 years 9 months ago
Efficiently approximating query optimizer plan diagrams
Given a parametrized n-dimensional SQL query template and a choice of query optimizer, a plan diagram is a color-coded pictorial enumeration of the execution plan choices of the o...
Atreyee Dey, Sourjya Bhaumik, Harish D., Jayant R....