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JCAM
2010
94views more  JCAM 2010»
12 years 11 months ago
Cascadic multilevel methods for ill-posed problems
Multilevel methods are popular for the solution of well-posed problems, such as certain boundary value problems for partial differential equations and Fredholm integral equations ...
Lothar Reichel, Andriy Shyshkov
NA
2010
62views more  NA 2010»
13 years 3 months ago
Noise-reducing cascadic multilevel methods for linear discrete ill-posed problems
Cascadic multilevel methods for the solution of linear discrete ill-posed problems with noise-reducing restriction and prolongation operators recently have been developed for the r...
Serena Morigi, Lothar Reichel, Fiorella Sgallari
MOC
2000
126views more  MOC 2000»
13 years 4 months ago
Adaptive multilevel methods in space and time for parabolic problems-the periodic case
The aim of this paper is to display numerical results that show the interest of some multilevel methods for problems of parabolic type. These schemes are based on multilevel spatia...
J. B. Burie, M. Marion
TREC
2003
13 years 6 months ago
TREC 2003 Question Answering Track at CAS-ICT
In our system, we make use of Chunk information to analyze the question. A multilevel method is fulfilled to retrieve candidate Bi-sentences. As to answer selecting, we proposed a...
Yi Chang, Hongbo Xu, Shuo Bai