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ICTCS
2005
Springer
14 years 1 months ago
Inapproximability Results for the Lateral Gene Transfer Problem
This paper concerns the Lateral Gene Transfer Problem. This minimization problem, defined by Hallet and Lagergren [6], is that of finding the most parsimonious lateral gene trans...
Bhaskar DasGupta, Sergio Ferrarini, Uthra Gopalakr...
EUROPAR
2004
Springer
14 years 1 months ago
Architecture-Independent Meta-optimization by Aggressive Tail Splitting
Several optimization techniques are hindered by uncertainties about the control flow in a program, which can generally not be determined by static methods at compile time. We pres...
Michael Rock, Andreas Koch
CIAC
1997
Springer
111views Algorithms» more  CIAC 1997»
14 years 15 days ago
A Meticulous Analysis of Mergesort Programs
The efficiency of mergesortprogramsis analysed under a simple unit-cost model. In our analysis the time performance of the sorting programs includes the costs of key comparisons, e...
Jyrki Katajainen, Jesper Larsson Träff
SDM
2010
SIAM
181views Data Mining» more  SDM 2010»
13 years 9 months ago
Making k-means Even Faster
The k-means algorithm is widely used for clustering, compressing, and summarizing vector data. In this paper, we propose a new acceleration for exact k-means that gives the same a...
Greg Hamerly
CORR
2008
Springer
186views Education» more  CORR 2008»
13 years 8 months ago
Greedy Signal Recovery Review
The two major approaches to sparse recovery are L1-minimization and greedy methods. Recently, Needell and Vershynin developed Regularized Orthogonal Matching Pursuit (ROMP) that ha...
Deanna Needell, Joel A. Tropp, Roman Vershynin