1787 search results - page 47 / 358 » Approximation Techniques for Spatial Data |
TMI
1998
13 years 8 months ago
1998
—Spatially varying focal length fan-beam collimators can be used in single photon emission computed tomography to improve detection efficiency and to reduce reconstruction artif...
TKDE
2002
13 years 8 months ago
2002
A join-index is a data structure used for processing join queries in databases. Join-indices use precomputation techniques to speed up online query processing and are useful for da...
COMPGEOM
2004
ACM
14 years 2 months ago
2004
ACM
We present memory-efficient deterministic algorithms for constructing -nets and -approximations of streams of geometric data. Unlike probabilistic approaches, these deterministic...
ICDE
2012
IEEE
11 years 11 months ago
2012
IEEE
Abstract—This paper proposes LARS, a location-aware recommender system that uses location-based ratings to produce recommendations. Traditional recommender systems do not conside...
SODA
2008
ACM
13 years 10 months ago
2008
ACM
In this paper we consider problems related to the sortedness of a data stream. First we investigate the problem of estimating the distance to monotonicity; given a sequence of len...