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DEBU
2008
139views more  DEBU 2008»
15 years 4 months ago
Testing SQL Server's Query Optimizer: Challenges, Techniques and Experiences
Query optimization is an inherently complex problem, and validating the correctness and effectiveness of a query optimizer can be a task of comparable complexity. The overall proc...
Leo Giakoumakis, César A. Galindo-Legaria
JC
2006
61views more  JC 2006»
15 years 3 months ago
The discretized discrepancy principle under general source conditions
We discuss adaptive strategies for choosing regularization parameters in TikhonovPhillips regularization of discretized linear operator equations. Two rules turn out to be entirel...
Peter Mathé, Sergei V. Pereverzev
PSYCHNOLOGY
2006
102views more  PSYCHNOLOGY 2006»
15 years 3 months ago
Radiology Informatics and Work Flow Redesign
The transformation from film-based to filmless operations has become more and more challenging as medical imaging studies expand in size and complexity. To adapt to these changes ...
Guido Vaccari, Carlo Saccavini
CGF
2004
114views more  CGF 2004»
15 years 3 months ago
Smooth Surface Reconstruction Using Tensor Fields as Structuring Elements
We propose a new strategy to estimate surface normal information from highly noisy sparse data. Our approach is based on a tensor field morphologically adapted to infer normals. I...
Marcelo Bernardes Vieira, Paulo P. Martins Jr., Ar...
PAA
2000
15 years 3 months ago
Using Renyi's Information and Wavelets for Target Detection: An Application to Mammograms
Abstract: In this paper we present a multi-scale method for the detection of small targets embedded in noisy background. The multiscale representation is built using a weighted und...
Giuseppe Boccignone, Angelo Chianese, Antonio Pica...