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GIS
2007
ACM
15 years 6 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
IDA
2007
Springer
15 years 6 months ago
WWW traffic measure and its properties
Abstract. We present a method to extract a time series (Number of Active Requests (NAR)) from web cache logs which serves as a transport level measurement of internet traffic. This...
Marcus R. Keogh-Brown, Barbara Bogacka
SIAMJO
2008
93views more  SIAMJO 2008»
15 years 6 months ago
Recursive Trust-Region Methods for Multiscale Nonlinear Optimization
A class of trust-region methods is presented for solving unconstrained nonlinear and possibly nonconvex discretized optimization problems, like those arising in systems governed by...
Serge Gratton, Annick Sartenaer, Philippe L. Toint
SIGIR
2008
ACM
15 years 6 months ago
Emulating query-biased summaries using document titles
Generating query-biased summaries can take up a large part of the response time of interactive information retrieval (IIR) systems. This paper proposes to use document titles as a...
Hideo Joho, David Hannah, Joemon M. Jose
IM
2007
15 years 6 months ago
Approximating Personalized PageRank with Minimal Use of Web Graph Data
Abstract. In this paper, we consider the problem of calculating fast and accurate approximations to the personalized PageRank score of a webpage. We focus on techniques to improve ...
David Gleich, Marzia Polito