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SIAMSC
2011
148views more  SIAMSC 2011»
14 years 6 months ago
Bootstrap AMG
We develop an algebraic multigrid (AMG) setup scheme based on the bootstrap framework for multiscale scientific computation. Our approach uses a weighted least squares definition...
Achi Brandt, James J. Brannick, K. Kahl, Irene Liv...
ICASSP
2011
IEEE
14 years 3 months ago
Sparse decomposition of transformation-invariant signals with continuous basis pursuit
Consider the decomposition of a signal into features that undergo transformations drawn from a continuous family. Current methods discretely sample the transformations and apply s...
Chaitanya Ekanadham, Daniel Tranchina, Eero P. Sim...
IDEAS
2000
IEEE
117views Database» more  IDEAS 2000»
15 years 4 months ago
Path Query Reduction and Diffusion for Distributed Semi-Structured Data Retrieval
I n this paper, we address the problem of query processing o n distributed semi-structured data. The distributed semistructured data can be modeled as a rooted and edge-labeled gr...
Jaehyung Lee, Yon Dohn Chung, Myoung-Ho Kim
ICDT
1997
ACM
90views Database» more  ICDT 1997»
15 years 3 months ago
Adding Structure to Unstructured Data
We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be mu...
Peter Buneman, Susan B. Davidson, Mary F. Fernande...
ICDE
2009
IEEE
163views Database» more  ICDE 2009»
16 years 1 months ago
A Data Structure for Sponsored Search
Abstract-- Inverted files have been very successful for document retrieval, but sponsored search is different. Inverted files are designed to find documents that match the query (a...
Arnd Christian König, Kenneth Ward Church, Ma...