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New Algorithms for Relaxed Multiplication

by Joris van der Hoeven , 2003
"... ..."
Abstract - Cited by 3 (3 self) - Add to MetaCart
Abstract not found

Stochastic relaxation, Gibbs distributions and the Bayesian restoration of images.

by Stuart Geman , Donald Geman - IEEE Trans. Pattern Anal. Mach. Intell. , 1984
"... Abstract-We make an analogy between images and statistical mechanics systems. Pixel gray levels and the presence and orientation of edges are viewed as states of atoms or molecules in a lattice-like physical system. The assignment of an energy function in the physical system determines its Gibbs di ..."
Abstract - Cited by 5126 (1 self) - Add to MetaCart
mechanisms, including blurring, nonlinear deformations, and multiplicative or additive noise, the posterior distribution is an MRF with a structure akin to the image model. By the analogy, the posterior distribution defines another (imaginary) physical system. Gradual temperature reduction in the physical

Discovery of Multiple-Level Association Rules from Large Databases

by Jiawei Han, Yongjian Fu - In Proc. 1995 Int. Conf. Very Large Data Bases , 1995
"... Previous studies on mining association rules find rules at single concept level, however, mining association rules at multiple concept levels may lead to the discovery of more specific and concrete knowledge from data. In this study, a top-down progressive deepening method is developed for mining mu ..."
Abstract - Cited by 463 (34 self) - Add to MetaCart
Previous studies on mining association rules find rules at single concept level, however, mining association rules at multiple concept levels may lead to the discovery of more specific and concrete knowledge from data. In this study, a top-down progressive deepening method is developed for mining

A Data Locality Optimizing Algorithm

by Michael E. Wolf, Monica S. Lam , 1991
"... This paper proposes an algorithm that improves the locality of a loop nest by transforming the code via interchange, reversal, skewing and tiling. The loop transformation algorithm is based on two concepts: a mathematical formulation of reuse and locality, and a loop transformation theory that unifi ..."
Abstract - Cited by 804 (16 self) - Add to MetaCart
that unifies the various transforms as unimodular matrix transformations. The algorithm has been implemented in the SUIF (Stanford University Intermediate Format) compiler, and is successful in optimizing codes such as matrix multiplication, successive over-relaxation (SOR), LU decomposition without pivoting

Studies of transformation of Escherichia coli with plasmids

by Douglas Hanahan - J. Mol. Biol , 1983
"... Factors that affect he probability of genetic transformation f Escherichia coli by plasmids have been evaluated. A set of conditions is described under which about one in every 400 plasmid molecules produces a transformed cell. These conditions include cell growth in medium containing elevated level ..."
Abstract - Cited by 1632 (1 self) - Add to MetaCart
levels of Mg 2+. and incubation of the cells at 0 ~ in a solution of Mn 2+, ("a 2+, Rb + or K +, dimethyl sulfoxide, dithiothreitol, and hexamine cobalt (III). Transibrmation efficiency declines linearly with increasing plasmid size. Relaxed and supercoiled plasmids transfol'm with similar

Evaluation of Release Consistent Software Distributed Shared Memory on Emerging Network Technology

by Sandhya Dwarkadas, Pete Keleher, Alan L. Cox, Willy Zwaenepoel
"... We evaluate the effect of processor speed, network characteristics, and software overhead on the performance of release-consistent software distributed shared memory. We examine five different protocols for implementing release consistency: eager update, eager invalidate, lazy update, lazy invalidat ..."
Abstract - Cited by 467 (43 self) - Add to MetaCart
such as Cholesky achieve little speedup regardless of the protocol used because of the frequency of synchronization operations and the high latency involved. While the use of relaxed memory models, lazy implementations, and multiple-writer protocols has reduced the impact of false sharing, synchronization latency

Algorithms for simultaneous sparse approximation. Part II: Convex relaxation

by Joel A. Tropp, Anna C. Gilbert, Martin, J. Strauss, J. A. Tropp, A. C. Gilbert, M. J. Strauss , 2004
"... Abstract. A simultaneous sparse approximation problem requests a good approximation of several input signals at once using different linear combinations of the same elementary signals. At the same time, the problem balances the error in approximation against the total number of elementary signals th ..."
Abstract - Cited by 366 (5 self) - Add to MetaCart
problems. The second part of the paper develops another algorithmic approach called convex relaxation, and it provides theoretical results on the performance of convex relaxation for simultaneous sparse approximation. Date: Typeset on March 17, 2005. Key words and phrases. Greedy algorithms, Orthogonal

Relaxed Multiplication Using the Middle Product Joris van der Hoeven

by Département De Mathématiques (bât
"... In previous work, we have introduced the technique of re-laxed power series computations. With this technique, it is possible to solve implicit equations almost as quickly as doing the operations which occur in the implicit equation. In this paper, we present a new relaxed multiplication algo-rithm ..."
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In previous work, we have introduced the technique of re-laxed power series computations. With this technique, it is possible to solve implicit equations almost as quickly as doing the operations which occur in the implicit equation. In this paper, we present a new relaxed multiplication algo

Relaxed Multiple Routing Configurations: IP Fast Reroute for Single and Correlated Failures

by Tarik Čičić, Audun Fosselie Hansen, Amund Kvalbein, Matthias Hartman, Rüdiger Martin, Michael Menth, Stein Gjessing, Olav Lysne
"... Multi-topology routing is an increasingly popular IP network management concept that allows transport of different traffic types over disjoint network paths. The concept is of particular interest for implementation of IP fast reroute (IP FRR). First, it can support guaranteed, instantaneous recovery ..."
Abstract - Cited by 15 (1 self) - Add to MetaCart
based on multi-topology routing called Multiple Routing Configurations (MRC). In this paper we present two contributions. First we define an enhanced IP FRR scheme which we call ”relaxed MRC” (rMRC). Through experiments we demonstrate that rMRC is an improvement over MRC in all important aspects

Generating textures on arbitrary surfaces using reaction-diffusion

by Greg Turk - Computer Graphics , 1991
"... This paper describes a biologically motivated method of texture synthesis called reaction-diffusion and demonstrates how these textures can be generated in a manner that directly matches the geometry of a given surface. Reaction-diffusion is a process in which two or more chemicals diffuse at unequa ..."
Abstract - Cited by 283 (5 self) - Add to MetaCart
at unequal rates over a surface and react with one another to form stable patterns such as spots and stripes. Biologists and mathematicians have explored the patterns made by several reaction-diffusion systems. We extend the range of textures that have previously been generated by using a cascade of multiple
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