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SIAMSC
2008
142views more  SIAMSC 2008»
15 years 4 months ago
A Fast Direct Solver for the Biharmonic Problem in a Rectangular Grid
We present a fast direct solver methodology for the Dirichlet biharmonic problem in a rectangle. The solver is applicable in the case of the second order Stephenson scheme [34] as ...
Matania Ben-Artzi, Jean-Pierre Croisille, Dalia Fi...
TKDE
2008
126views more  TKDE 2008»
15 years 4 months ago
The Discrete Basis Problem
Matrix decomposition methods represent a data matrix as a product of two smaller matrices: one containing basis vectors that represent meaningful concepts in the data, and another ...
Pauli Miettinen, Taneli Mielikäinen, Aristide...
JC
2007
94views more  JC 2007»
15 years 4 months ago
On the complexity of the multivariate Sturm-Liouville eigenvalue problem
We study the complexity of approximating the smallest eigenvalue of −∆ + q with Dirichlet boundary conditions on the d-dimensional unit cube. Here ∆ is the Laplacian, and th...
A. Papageorgiou
DAM
2000
137views more  DAM 2000»
15 years 4 months ago
Solving the feedback vertex set problem on undirected graphs
Feedback problems consist of removing a minimal number of vertices of a directed or undirected graph in order to make it acyclic. The problem is known to be NPcomplete. In this pa...
Lorenzo Brunetta, Francesco Maffioli, Marco Trubia...
JUCS
2000
117views more  JUCS 2000»
15 years 4 months ago
The Light Control Case Study: Problem Description
: This document contains a range of needs and requirements concerning the construction of a light control system for a floor of a university building. A description of the building...
Stefan Queins, Gerhard Zimmermann, Martin Becker, ...