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» On Reduct Construction Algorithms
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STOC
2006
ACM
141views Algorithms» more  STOC 2006»
16 years 7 months ago
Lattice problems and norm embeddings
We present reductions from lattice problems in the 2 norm to the corresponding problems in other norms such as 1, (and in fact in any other p norm where 1 p ). We consider latt...
Oded Regev, Ricky Rosen
IV
2009
IEEE
124views Visualization» more  IV 2009»
16 years 1 months ago
An Occlusion-Reduced 3D Hierarchical Data Visualization Technique
Occlusion is an important problem to be solved for readability improvement of 3D visualization techniques. This paper presents an occlusion reduction technique for cityscape-style...
Reiko Miyazaki, Takayuki Itoh
BIOWIRE
2007
Springer
16 years 27 days ago
Beta Random Projection
Random projection (RP) is a common technique for dimensionality reduction under L2 norm for which many significant space embedding results have been demonstrated. In particular, r...
Yu-En Lu, Pietro Liò, Steven Hand
WEA
2005
Springer
117views Algorithms» more  WEA 2005»
16 years 5 days ago
Vertex Cover Approximations: Experiments and Observations
The vertex cover problem is a classic NP-complete problem for which the best worst-case approximation ratio is roughly 2. In this paper, we use a collection of simple reductions, e...
Eyjolfur Asgeirsson, Clifford Stein
ECCC
2011
190views ECommerce» more  ECCC 2011»
14 years 10 months ago
Optimal heuristic algorithms for the image of an injective function
The existence of optimal algorithms is not known for any decision problem in NP \ P. We consider the problem of testing the membership in the image of an injective function. We co...
Edward A. Hirsch, Dmitry Itsykson, Valeria Nikolae...