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» Bias and the limits of pooling
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GIS
2007
ACM
13 years 8 months ago
Contour line thinning and multigrid generation of raster-based digital elevation models
Thin plate spline interpolation is a widely used approach to generate a digital elevation model (DEM) from contour lines and scattered data. In practice, contour maps are scanned a...
Endre Katona
PR
2007
81views more  PR 2007»
13 years 8 months ago
Mining evolving data streams for frequent patterns
A data stream is a potentially uninterrupted flow of data. Mining this flow makes it necessary to cope with uncertainty, as only a part of the stream can be stored. In this pape...
Pierre-Alain Laur, Richard Nock, Jean-Emile Sympho...
PR
2010
184views more  PR 2010»
13 years 6 months ago
Total variation, adaptive total variation and nonconvex smoothly clipped absolute deviation penalty for denoising blocky images
The total variation-based image denoising model has been generalized and extended in numerous ways, improving its performance in different contexts. We propose a new penalty func...
Aditya Chopra, Heng Lian
EUROPAR
2009
Springer
14 years 3 months ago
Impact of Quad-Core Cray XT4 System and Software Stack on Scientific Computation
An upgrade from dual-core to quad-core AMD processor on the Cray XT system at the Oak Ridge National Laboratory (ORNL) Leadership Computing Facility (LCF) has resulted in significa...
Sadaf R. Alam, Richard F. Barrett, Heike Jagode, J...
COLCOM
2008
IEEE
14 years 3 months ago
Collaborative Search and User Privacy: How Can They Be Reconciled?
Abstract. Collaborative search engines (CSE) let users pool their resources and share their experiences when seeking information on the web. However, when shared, search terms and ...
Thorben Burghardt, Erik Buchmann, Klemens Böh...