Schur complement | Sciweavers

47

SDM
2011
SIAM

241views Data Mining» more SDM 2011»

A Fast Algorithm for Sparse PCA and a New Sparsity Control Criteria

13 years 2 months ago

Sparse principal component analysis (PCA) imposes extra constraints or penalty terms to the standard PCA to achieve sparsity. In this paper, we ﬁrst introduce an eﬃcient algor...

Yunlong He, Renato Monteiro, Haesun Park

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46

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MMAS
2011
Springer

182views Intelligent Agents» more MMAS 2011»

Sweeping Preconditioner for the Helmholtz Equation: Moving Perfectly Matched Layers

13 years 2 months ago

Download www.math.utexas.edu

This paper introduces a new sweeping preconditioner for the iterative solution of the variable coeﬃcient Helmholtz equation in two and three dimensions. The algorithms follow th...

Björn Engquist, Lexing Ying

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36

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COMPUTING
2000

89views more COMPUTING 2000»

Condition Numbers of Approximate Schur Complements in Two- and Three-Dimensional Discretizations on Hierarchically Ordered Grids

13 years 11 months ago

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