Sciweavers

JEI
2008
93views more  JEI 2008»
13 years 11 months ago
Novel workflow for image-guided gamut mapping
We introduce a novel workflow that will hopefully open new directions of processing and improvement in image reproduction. Existing gamut mapping algorithms can be classified into ...
Asaf Golan, Hagit Hel-Or
IPL
2006
151views more  IPL 2006»
13 years 11 months ago
Approximating weighted matchings in parallel
We present an NC approximation algorithm for the weighted matching problem in graphs with an approximation ratio of (1 - ). This improves the previously best approximation ratio of...
Stefan Hougardy, Doratha E. Drake Vinkemeier
IPL
2006
97views more  IPL 2006»
13 years 11 months ago
A fixed-parameter tractability result for multicommodity demand flow in trees
We study an NP-hard (and MaxSNP-hard) problem in trees--Multicommodity Demand Flow--dealing with demand flows between pairs of nodes and trying to maximize the value of the routed...
Jiong Guo, Rolf Niedermeier
CORR
2007
Springer
141views Education» more  CORR 2007»
13 years 11 months ago
A Class of Parallel Tiled Linear Algebra Algorithms for Multicore Architectures
As multicore systems continue to gain ground in the High Performance Computing world, linear algebra algorithms have to be reformulated or new algorithms have to be developed in or...
Alfredo Buttari, Julien Langou, Jakub Kurzak, Jack...
JDA
2008
62views more  JDA 2008»
13 years 11 months ago
A parallel extended GCD algorithm
A new parallel extended GCD algorithm is proposed. It matches the best existing parallel integer GCD algorithms of Sorenson and Chor and Goldreich, since it can be achieved in O (...
Sidi Mohamed Sedjelmaci
CORR
2007
Springer
93views Education» more  CORR 2007»
13 years 11 months ago
Type-IV DCT, DST, and MDCT algorithms with reduced numbers of arithmetic operations
We present algorithms for the type-IV discrete cosine transform (DCT-IV) and discrete sine transform (DST-IV), as well as for the modified discrete cosine transform (MDCT) and it...
Xuancheng Shao, Steven G. Johnson
CORR
2007
Springer
105views Education» more  CORR 2007»
13 years 11 months ago
Relative-Error CUR Matrix Decompositions
Many data analysis applications deal with large matrices and involve approximating the matrix using a small number of “components.” Typically, these components are linear combi...
Petros Drineas, Michael W. Mahoney, S. Muthukrishn...
CORR
2007
Springer
103views Education» more  CORR 2007»
13 years 11 months ago
Interactive Small-Step Algorithms I: Axiomatization
Abstract. In earlier work, the Abstract State Machine Thesis — that arbitrary algore behaviorally equivalent to abstract state machines — was established for several classes of...
Andreas Blass, Yuri Gurevich, Dean Rosenzweig, Ben...
JCST
2008
119views more  JCST 2008»
13 years 11 months ago
Mining Frequent Generalized Itemsets and Generalized Association Rules Without Redundancy
This paper presents some new algorithms to efficiently mine max frequent generalized itemsets (g-itemsets) and essential generalized association rules (g-rules). These are compact ...
Daniel Kunkle, Donghui Zhang, Gene Cooperman
JCST
2008
144views more  JCST 2008»
13 years 11 months ago
Beacon-Less Geographic Routing in Real Wireless Sensor Networks
Geographic Routing (GR) algorithms, require nodes to periodically transmit HELLO messages to allow neighbors know their positions (beaconing mechanism). Beacon-less routing algorit...
Juan A. Sánchez, Rafael Marín-P&eacu...